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 0x3bceb9716554ad0d8842b8dbd7c6170714d670954d519d8a1715ee49c24994f6. 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/cba7e03c-d135-4c12-8487-acf6ca550c23.json and https://artists.proofprofile.net/proofs/artist/cba7e03c-d135-4c12-8487-acf6ca550c23.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 0xa082632d62d3a4be4f370b775697e78d6532270161b79687e539bee961f6caff. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:33:09Z), 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/QZWFN2302628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dd5e4127885fe70a14fcd31a4b09721554aaa98f785f9cee5ccaa804021f5a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:47Z), 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/QZWFN2302630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7048c6533c245bf90c693185a5c08a11c7507e69e30b52047474cdc668478a. 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/QZWFN2302634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b91e876408ea7b3b599f64f0dca1c0da84f0cee1c5dba41747eb3384c8070. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:33Z), 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/QZWFN2302635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa082632d62d3a4be4f370b775697e78d6532270161b79687e539bee961f6caff. 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/QZWFN2302628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c2648b3b857c37ffb050fc6cd53e1caed802db781953b1fb29759c8cb83bcc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFN2302631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0878efffa075e1ebe1e646c2d2102db743a7faaa25fd285706c51ac51b513d5. 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/QZWFN2302633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b91e876408ea7b3b599f64f0dca1c0da84f0cee1c5dba41747eb3384c8070. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZWFN2302635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa234da3b5dbbbb31b51d3caad6c226a9c9ace087f4cf67a3f03993f65d6954. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ62473834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3db76115d1f6a11352c24fbbb371113f09bdbdc1a17132ff3600d47c4875c7. 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/QZNJY2495319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb4328895dc7fca75a0fca368d8531806b82c35856ad623998b61c67425683b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJY2495320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa340db180927d9cead41f5afd10a1cf336c95a0450f817c58aafc1f0a4a93470. 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/QZNJY2495321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f17b5aca4fe0fbaeea2d1f2acc579fe963fef5609a9bee73abe28081b7e936. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZTPX2493722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347b45a7ed53a82786d7fe534acd007988f08a36e301dd0626ea46fb855c406e. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:09:23Z), 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/QZTPX2493723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0de2efbcd60c1d755716250572a1a762718222b5bd0b8c4a7e6e04d3b0fe08b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTPX2493728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dfa1cac13a06b90c28f7e91e0f198add86806c375ea31434aa7f71a10f50fb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTPX2493730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3df0a1d24dbf3c0bf6523cb79ded8bd361b4d54a19fee331ca6476a37f12d3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZW9M2468229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563883843d950365d3fd9c5738bd034866a5ca82c4294c3b8a337b7642e39040. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZAKB2509372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cfa7ce9776d4322012f31cbf016f5c4772343d8db3ad3c410f0f157c998067. 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/ARQIW2502504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d905cfadff9b3233a03b434334ec1d3ba1e38d3af57527a39831dff64a5208a. 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/QZMZ92571892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb213a9de58ddb454cf562e28f602d5620a69484e2fb42e76b024690db6f58df6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:28Z), 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/USHM82537523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67229bec27aaa8dd5a7457cf86cf8db4187134725d5609cbb845c9df711a0b57. 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/QZAKB2509629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da710115fe98fcb45edae60b3ed229ab5828cda2b83354daf7c79aee0cbff0a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZAKB2509631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f1eac7271646df56bc3230c3009d4b948e3052d2bbbcc188b7363feb610532. 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/QZAKB2509632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf170c98a4aba3df16ed653bf88dbfc00209654335621606fa36e82bbf307cfb6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZAKB2509374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85088fd9c5e00e8cd3862f063dc508abd56fcd2f6b9d6ec373edeac45c089a43. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZAKB2509373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e558e1e6e6eb85f6f9d9b43f1107a347cc47db23859bd53645a81bb7dde5080. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZAKB2530459.