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 0x64180e2e916470cf4208665c48bebea8d314a00cf504890ff0fc22e88ec18bdd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/557a6eed-8275-4dd2-91af-4a665a2e3ec5.json and https://artists.proofprofile.net/proofs/artist/557a6eed-8275-4dd2-91af-4a665a2e3ec5.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 0x52873f828e7c0d8bd2d183c50f6c46cb544475762b7d34c642c21f3f78f571e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAMAO2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2b251ca8868832d594a45ee4b663b41474b03c69d62013d63c3e5953ab8b5d. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ZAMAO2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb94c0abc6ed4c4c202f3bb7d57413a8216583b7c036b637cbdc1d27beb2b0. 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/QZWFJ2479334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f0ad125a269edf5d678c8ae25cc26e4f6593321086179fc7388a3f48e5f344. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFN2318912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3012c0a932c82fed42aeb0f0c51b02a88216e19b868542402c9a583639f799e6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZWFN2318913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67520496e1574d112db63cce81029238465cbfc163a9a48ef856aa1c3a7e9d7f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEM2296032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765bacdadf762007d801138b87d5c3989f95f9b8ef5d7a14b16ee4d93c2cd977. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ62150156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905416ef99fd737ef35ed60189f57254df3534d73c7650124ce5bcb69ba99c3b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US23A1554328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f606553f55325da0eb707c047a8ec270c8d31369818d4044af77fdca10e2a43. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1554329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d931e2fde0bcfbf3837f3e8fb79f636f3b9e808c5c9c41d890fefbacb8ebbab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US23A1554330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c86bce71a1c17249b50add1fc525351dc7996d3240fe6fb85aec469b2f4a9bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US23A1554331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a500e1a665da3e15db653d23745cc3dbb420f4e19ed45ce169319ca1d301480. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1554332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54389fb2708beff6ae6d8cf80a6ff03ec955a30bab5c9d7df91029aeeab8d31d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US23A1554333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ad6044a91f335ef6a571e7801412cd1f0dda74ee6c89e7ec099f72d5b2c0db. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1554334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16d6c7360abd1ce4210b6d40f6ebcaeebea6328ccb71957d86cf47b449e39e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6K2239667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461de825286326b95cf7f6f8e9da38f06ff819d5de728d5191a8e4467ff9b4bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22165421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692669050303f565e508e15e76a773f95ec475608d122a32b12a980b2a63183b. 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/UKXN22112310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecacaa69626f092f211f3b40bcc2161e86eaf3069982fe889d0875bb6426a17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKXN22112317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcace6c3a11d40b738e075cea5d8794f4fe59ee9d6d1203cb497b2e31bd6c9759. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/UKXN22112325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f69ed9759d0c46c63b07f37c3ced1774c2565bf1837b524812a973d775d25. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKXN22112346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cab2189c39d62a68488725002f8264d94b482b0eb25c6723a2aec7a71605256. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZRP52418250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60174ec627b676d4ba4504e5c5256d086d3755b7cfd4526eb97b4c613c611559. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZRP52418251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca83f48a3054fa861c9bb71c65fa96e8851506d932272550988146948675255. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZRP52418255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a18fd32a4de527c9ead8bceb99590d13beffa85f49991274bb484a2cccb01. 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/QZWFG2455342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687205c28932627b6c83d590913c9c3e22db0d6579341b659af298a31c6be25f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFG2455343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db38b9f69764aef76782f3e07d90cdaa3da9d3c1253fb2e388034d0f4d51d25. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFG2455344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d0bced81039354ac30ae8ea303f88395e9f731b3ca537fa139baef84047f89. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZWFG2455345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db9adb870a5ecd10cb7739467155ee2d241aa762a6f58d2de06abe0ff35e240. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZBQ1U2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dce5350459d27f695fb2532dcca01a8a897ee252081fc70952597db0db96d0d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZBQ1U2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe748fe22429c9b41770b0be0ef6807a6a6bce69e20d1e5067f0a2cb266a72fb4. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/DEY472477761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41312c09ecc676fc0f416c133ad8269148db4c484cbf2c2cd40f330a61bead7f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX9P2329675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee92fae2607d3fd8140fab4534f3aa57277ffd7acaf0dfb45b59846448e0e132. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX9P2329679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec578f2ffbf26ab2f8781a40a456a5353f43994983c7ddd233ed16f835e553b2. 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/DEY472378535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c67943a3871e614402bdcac9373145c1084dcf399f1585c7f6b3ce1ca13e9fe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES72142491.