1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc809a1b363e1dcfd948221e45ec44b7050b7d6e62c3d2eb74f273a2631ad0bd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ee56867-f571-4209-ae15-d62a45a338a2.json and https://artists.proofprofile.net/proofs/artist/2ee56867-f571-4209-ae15-d62a45a338a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51c75cf1a9e3252da37cccd46d36a9ed661b60ad96b13d783276853f4cb2bad. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72067929.
One Year of Chaos, Vol. 1 (2020 Collection)
One Year of Chaos, Vol. 3 (2020 Collection)
One Year of Chaos, Vol. 2 (2020 Collection)
One Year of Chaos, Vol. 4 (2020 Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1fbab42ea58ec13e21bb0a4489bfeceddfa84a5eb24a1c445aa9fe58c3c075. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2143824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa557bcc9e632fab02e49866a0b70d6496c34e7197a2e95d5338329ed51559e18. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP42175674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4707ee6f31842d72a032b12b1f2edb16d0f74a22dfeb2f59024cece20f2be38f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2398023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c93714cbe702faa4ead006fb4203031f66d43b8718cf3d5d9d453d5c83fbec. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2307251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aac4501c19d1ade9b54c73530dd631cb7768903522ab06f04c6fadb5c48e61d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFG2307253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03fa22b6c21b8653942d84cae4ebf70c77b1fb6a457b9278d5a425ec9020dba. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2315795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c743d7d51e6e6830f1a13273d3e8045bdf4cfb4309a81d4e04a153fc4f4527. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:03:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42464668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a36ade9cd9d9d4875bf018988bdb340674f4af0e63e2a8d181fdb066e18fca. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42464677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4df29b0a6800585c88a67b9e0c181c934d1b7b528ba92602d36cd722115416. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2419814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239be6f3f721ea82db35370e3896d0121ced21e528ee23a5bb7274203d81c83d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAS2442527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735fdf53a02ca10fcca40fe4572ad04e838673f706b87b77dd05551dc758e352. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7R2427986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb65afd8958559664193784d37fa3e079ad64c11c470d86ea5dd5e6f656192a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EZ2459806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc6f61968117bd2071bc0736cc4e70fc9214c91b869a01773858142e53f1fb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52567596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72298639fc86eb2c3585cce30261589522887484dd716d86ebc6714d9bd9cd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32528378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180aed3d7e03b7582880a8dd6e299e9644403291745d4d180688301490fb889. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32528379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eab9983f8126066b158e5700e17911b47bbba3cd7c79db1c9fdcd5f5f23bb12. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52580621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0d34ea0417b4cf72447268427468e737da7ecf2740e992f11e9a8c2aa61e65. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2502413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296ca98bcef81adb9a797c63c60c1960638a66aa58706bfff8f8f798917b43e0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2502414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee4df31450e50e8b44f41906854a0f0cf8957b9be54f9bdeb23980dbcb0f069. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2502416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12213c273372853c3388ccce461b50b77e6373c976b2440a9bb377db38bcf1bb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2502420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12972f8ee37db640395c0e948daeab268f0e3bb7c7ae2b04eb1483c8b12bf9e8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2588108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09df73f98089091f34141b9022ee2a8a239d1d36ce3a2739821c8c3224f4568b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2575892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f86f1f5b9faad7ed80680e83f28e98bdf7197a4f17e470ee650eeb62e13d8a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2575893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07b64455141acff5734a7d0c38225886537b9075abb0efd598239d1e48fc393. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2575894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f04efc753eaee5b18a634a8e3c854680047a970ae162b27b42c4f1abb67f71a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2575895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae92fb483b908c113790d4492987b69cd090511aaa6c284f39dfe47ca7aaf92. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2575896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf336e67ab293161b1de4702a6294594b45b0f510fc526b496d0b69c315f0c7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2575897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98acd3c2acbccc36e0924f6665272bd425741684fb301129415fd469aae9766. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2591072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f000a422682e26320b9642869483397d33efb91096001c534d0e4ed55d0da7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2548029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70657488b5cafc265a17917d112436fa0fe6ae1cf17438110f1b845d166f72ac. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:53:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2548030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef28bf214380e0f8882614682d5507e995b1a95105a13093663cdbd990fc510. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:54:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2548031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a27c652442a25b78ec66cef864e2b569e091b724832e4c09efc764dd425f0e. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2548033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bd559926d7f7e28f054fe0c26b383ccaa1813ae18aede67d14305743779244. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2548035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9f8cd7eaa39d3e10f62419a79d8c14a15caa500202ba303487bb3b009dc16. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2548037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfb6db512851d748efcc95ab5ff923d28d7da84ae7b69522a301d62f12f3245. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2548039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcbe343f54d8a2f90f4e81e6d21a17a3a67e579ef387fb2af261196edc2eb8d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2598609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9380c501897d2185808444ecf43fec4866ce6b5e50807f02eab44b30afdb27. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2539908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04bf43188bc333224949c0cad231fa868060302774b45946656997b3d37022c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2539910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485931249f1e2ac47b444e4d1b235a3bdff2e1b9b326ab8469324d611632be2b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2539916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4677c580e0b9e240dbd61231606b6f2cec906e1c6acdcb36c3ef2a7e3e1f7e5f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f79228e0ac38cf40f94773616aef10d1b3572e470e54b7cb83959610289ba80. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2f2a8cffde67fa404136aa427838d785f44d9ccfc6db6755ec3a346d79d60a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:02:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52379c309ca52c662400449fdea84ec8f608a95a878ab0c06e73e6879c5bc74f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15dcc07dedfcddc85bd20f0b1b818c852d3ca8f9cbc5eb927d024eaec476aec. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20514ee893c4f6c628d3b5d5260fb660da55dbc8b70bed45ab4f71781c8c5741. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8173aa5548783c1fc8b740a75b8eacb546c1c2e8649e7a4a2ebe94d8a86a596d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a4f0c9e7c1e8b26f379fe7a91002848fef6f7c937f7f697298d775c113762b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7916c8c4176469ba54c4174d4c794d8360e1c1ee434d185e1e551c8a455e98d. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBE2576638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837540f610cfdb3bbefddb6e5f3119f29eb57a0e5b6276980f4726d49412e15. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2536745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6673b2815208eafb779a100cc2b7d5458773e61eadc21e9fc4c5851d04490da. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2536746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fb4d3f7442dc7d9bf9ad7a9b45cf0ec19e7610a383c738c9b545534509e0e7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2536747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dedb17211bdfd6d160f974cc3c019755e815cd6a7f69a3f0186043827f8a5c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2536750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87ff10a0dd991ee419baf4dc37ec8d19f24ce7a3f5a906bba60e4d95f39abf2. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2536751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3362a8396683872d14c7a7b2ffd6bc136226b398a54fe03fc26911d4874eea. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFW2536753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6734b3615168bca9eb10a09cb9c4364ffd3cd97d99d749df853de05e6984c035. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F32568756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bc5bf99311993a5c46e619bcb40b7b9ade1d1c199a2904710783f4900dc6fc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EX2505265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c99fb1a2fbcef282ba64d9005117747f10ba1b6730695285490db30ce40f389. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52417711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0959e325279111c0f395319ad0ee3ad0f483014c56f2fb45751e677c13cf1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82402250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780e30f8d7548c55034c68e4c2e8589e4727f2f2ae81c96024ff1bab7dc9a75b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE66N2203326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ba0c070193d010aac8415a502a4744409d11310f742e8e821572e73715e5dd. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFN2398741.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch