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 0x0ab44aa1c38c32425a29eaf2cfedac88320810459ae70388757dafd93059a79f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a903e622-9996-407b-98c2-6edc2481a8eb.json and https://artists.proofprofile.net/proofs/artist/a903e622-9996-407b-98c2-6edc2481a8eb.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 0xce3ea638dc56cc3446df3c6f068d17bb941b470b8dff304c2b274a6678a2646f. 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/NO13D1901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3cb3eab883ecce8261db3a28980c74ee65d39d925d2e8bf306f3cac12eeea7. 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/NO13D1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6597932830b9f28d8b3b402cb614f17924fccf01be3cc6a221e961d82314e34. 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/NO13D1901030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8875263b404765c3499683b618e99d0f37e26afe2bf3001418b7801f5fae75c8. 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/NO13D1901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3867cbcfab6d4d6d2fa9afefa57ff52f544416e39da7523ddba9bf576f8cb74e. 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/NO13D1901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44b0cceb6186fcdfa09ad3ec7f995b288c5adb4dc384d0102d50efb571b5a52. 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/NO13D1901061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa344e30e45f0197328b65696e54226216fd47c7488194def4e1900242220dcda. 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/NO13D1901070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655d16cf3a734497da28a78e19d02928c2f65b1b6c80326e64b333bf1e02d77f. 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/NO13D1901080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e80f6c6cf1adb78e42412333f1cd5d7ff8dfcc51d28409c247ec8a67253bbc1. 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/NO13D1901090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea22bf340c2e785501dbf47980f8f7c5aa3645372fe1c1a189a98a6131e77a92. 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/NO13D1901100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edb9eaeabe590942cc2743d6b0f981bf6ef40b493d6aad7e86b48d669be0b1f. 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/NO13D1702010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5828a70b4b759ad214f94ebe4792d8702d7be2d28d9dbb39129540539e063d1. 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/NO13D1702020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2129ee0e77f947eb77a7e2a2bf4136366ed1daa246fa88e5e38832633fbf6902. 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/NO13D1702030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfbddb1eae8da66a0ece110e6fdc5a316dc25621ebb5c4ef77b3a18450dafd6. 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/NO13D1702070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b3cfd530592cc1c1d323c2f6be46ba5d6ad05b69b6e1b3e9a4c99ccdee91ef. 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/NO13D1702090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd61e4ddb84820ff7d7062470d7fc3cb5382754e84109a8445737f03611fd87. 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/NO13D1302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3d793baf2cdfa14311f87067190899fed2f10509042f42791e61f9b68a24ba. 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/NO13D1302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269f635254d9e30dff895b580facca0f8fa009c4797808b1ccede3448b407f6. 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/NO13D1302050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97919503bbbb04b3e5e5eb2e04318245fd6a5834c8b4bbacfc6ad21825c0943. 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/NO13D1302060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a505b66c5095b2aec3d0c54d3a17bc44158ccd2eecb0c0a288848643ecc140. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/NO13D1302070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01c333eb29426e98a6ba63bbde05653f0691a7293b547d8c2e5c188b24e7c1d. 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/NO13D1302080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9764d17be5c7cbde1d8446a45eb9ddc1793fbc931bfd690c887a75ba15bf101. 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/NO13D1302090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8286180ed96d92c3078895d629c23b68a7f2699609d493726666bd925f7fabe. 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/NO13D1302100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932d3a4f05fbbf7beb3ffa712a17e3d60ab1a155b1164ce9949a4d59a28b85a1. 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/NO13D1302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991c545784aae330c7a23e402b12c8ab57be3ac34d5f00233cc3cdf78aabc75. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:43:19Z), 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/NO13D1302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca073f534c89d4791ba7d57d5cd8274dd5ac404bf1e2ca1735f725e3dd9dd664. 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/TCAIK2458083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192a5912c5ddaa9df340bed5c69cc134d2184faa89ba7160e535ac50132a48b7. 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/NO13D2001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3cb3eab883ecce8261db3a28980c74ee65d39d925d2e8bf306f3cac12eeea7. 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/NO13D1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419496462c16d8d11994fb6dc8891ec6c2e096448b7d0ac7791dc41b2ce8ef8f. 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/TCADR1830697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1954b8d0694a3e38d2c4c9b89d37f7abb38737596685eb1c0c25fcb64a2840eb. 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/NO13D1601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa4e43eedc19b06c8f9aa345a57c994330c514c8c6ecee9cb166692640cebd3. 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/NO13D1301010.