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 0xf44ec044b574dfec4042e8bef6ff3bc1022dd81c999a7b79bce97d1a367ba50b. 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/7448a45d-607d-4beb-95ea-803464cac2e1.json and https://artists.proofprofile.net/proofs/artist/7448a45d-607d-4beb-95ea-803464cac2e1.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 0x65d2b3041c1939c23a91c71b94455044a86f73a4e8b3f2ac8ac4a0db7e6eadd6. 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/GBLFP1737663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfdc292a94c146c6855c9045dcf22802dbdae1c77d831518726533d415424cb. 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/GBLFP1737665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba97d9921ff3b9ed2aa43ea448553f3f36a308e40d618f71f8b69830d2df5ef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLFP1737666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e44a9ea582ac890202418dd8682587890a3686fcf72a6776d9f8920f7efd56. 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/GBLFP1737667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf534ec3083a6ff47d538223afb5d9aa696ca04a47d9ceb4f5922087e2abfbaaa. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBLFP1737668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8027f301b320cdeb6e4eae5e5c24122618f0c770b1c966fa11b70c867f1932. 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/GBLFP1779414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42abb058c3d25358539fcc5873ffc835957ac1a5e0723a4a10516489cb15b538. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBLFP1779416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42abb058c3d25358539fcc5873ffc835957ac1a5e0723a4a10516489cb15b538. 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/GBLFP1779416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda30513ff2b34c303b1dd813e841b6f0398ef363418591dca5fe91f173dbfa61. 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/GBLFP1797250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1ff23f2eb04a7c7a4f3122c18be501442b3e1b9fd42fbd8c5ad6335ca70979. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP1797251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8027f301b320cdeb6e4eae5e5c24122618f0c770b1c966fa11b70c867f1932. 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/GBLFP1779414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0788eea0574400ad4e975f8fc424acc1362ce64ca1bbc1dc2f076279e078a8. 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/GBLFP1797253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c426c89d0ceab622390b019eeeea4c96778402b4edc221d3130d3c1ea8be0f. 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/GBLFP1797254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878e72cf1dba387352ce3320f44411b33508813ea45a4e208f1a397e8bd2bddc. 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/GBLFP1736313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610836b695020f504046be213887b96ab55926a932445fa1968cd5bda924cd6. 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/GBLFP1755040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8909213b4b90a971c35e89ee064cf1349fbf633d1bf83957113272fccfe8a6e3. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBLFP1797257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fa6ec74f594fa8d59e20654f08de34cfef991c04587ec865b4f1df9da3b7cd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1797258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e21aa0b355f6b1855df37e1f24bcd5c6637925d6dff9b6cdfc9c62f67c038b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1797259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d2b3041c1939c23a91c71b94455044a86f73a4e8b3f2ac8ac4a0db7e6eadd6. 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/GBLFP1737663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66aa02ab046efab7b5e7144e8930cdb39a13d8255d2626bb95424dbd9fa9f30. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1797262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2498de8f1b9d2ce46a7568eb533c1382f03628200cd62790f1382dd8e7ae9f8. 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/GBLFP1797263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2ae63128306082fe63b09218013842bb23cd227fcf50236ee69d8e0b7e69ba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1797265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085cf3d3f57ecf9457b51e0cc83c48af197e222f7635c157269ea557782886d4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLFP1797266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54186eb2f4ea145103de79b7c337963ad6e796b61978b88b44457e7f5582510f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP1797267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fc5cb5d3e68a0e92735e0a07c969a1e3aba0338b61b3c99e27c15806c804d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP1797268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d4b7f78d449a8899e732fc7f4450ba2f857ec30ff0a28d3fd4093c06c4573b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKPLV1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd9bf4cb163e981deba255bfed6bb9fa50e6b133e6f791b4e34b8a17ef756b7. 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/UKPLV1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf007182be8988f8ead1ef938e150d408562b7be8be7120417e18e3c3a80d5a8. 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/UKPLV1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10da8fe80feb52696138d023bf88cb0e6e90fc3bf763e1c0a5043fce2dfcae91. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKPLV1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a7628e647131325a1e5ac29f17ec2eb517655678dd62f8712eb3adfc1e130a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKPLV1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc615b0a15f9ef19d8f019cb2b530f602ec5b9e40cd461d4b0a244519565df8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKPLV1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d2d589d5c5f54d1ba63c996f989c26f4083eeac98874241ba4ef0a140e96b. 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/UKPLV1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644ec387910eee3b747e8f9e85d8b3f860c2f6e6540ccfa17444476dbec2b3cc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKPLV1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7630df9c62225b8b4134bbafe0c8605f72af8d830db43f35e9b60a1ff403710b. 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/UKPLV1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af483df99a9551e5f2b3309678be68e3148a2d8847c24c3a602bd028265b8df. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKPLV1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf45401c86156b23c47dc46fb878bd8eb5f307cbffc68a1b1133d7d65fcc82e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKPLV1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fadfc717d7b8fd11e7dcfd1eee0c6fd3e776ad853e5e8903e78ec08b803758. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ESA012501048.