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 0x8acfa23e9f81f575106a7d81fd8c869ba4bd1b77870aec146cb4cbf89e778ae0. 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/cd347b37-65d7-4355-a8c9-4a8699d74870.json and https://artists.proofprofile.net/proofs/artist/cd347b37-65d7-4355-a8c9-4a8699d74870.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 0xa441283cd92acd051c5690b74191b9d93fe1c355686a16182e207448c693af8f. 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/FR96X1962742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eb2df45d4877b4a241a78da333db2fc3b27c54c526143c2c728a150b76cd10. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:48Z), 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/FR96X1962743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a963608802f947f44c9661748ea0984714f50819b6a9913268c0393b393b8c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:07:13Z), 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/FR96X1962744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91cc1d11b54fc2a3b682a126ee056c437fbb41626930fecb36a9838085c8c4c. 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/FR96X1962745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb826e2c45afaa5327db386978f707e3d1943c3934662f386cb1395a32933bc0b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR96X1962746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c03c16a5e962498b583187e96443e4b928722a500304129763ac215e1ecf3e4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:03Z), 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/FR96X1962734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76f458f30ca4f0754d6d4baa1e5a8c8185fc0e98cadc70a8c83122d1c66d747. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR96X1962735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e68358b25da72ead89d2c0efdb76c30cc79143c46e9f1910dc46820d1452b5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR96X1962740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaa1643373be567049afe05624ad8a8269772762a2ab197d939e710e86e0b0f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:29:01Z), 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/FR96X1962645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc8cd63945485569dcf7f6ab765b04e4762b8aa407571849d8f230d53bc1569. 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/FR96X1964671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95d0d30323859c1a9ac32e686f562e398924d90d61cf03c42a265da275453de. 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/FR96X1964674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bebd9055877aa564e494a0b585a8b3ccaf12f3027db6d06311702ce99790724. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:56:37Z), 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/FR96X1964675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735183dd219f44ae0e10f840b1a452970b597594d2fa398e8b866d6b43a6c685. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR96X1964676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8890e3fc5b2ba8fce4cc439a6160b70ad72ed6054ff182976eb6056aa8f88dd6. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM4TW2102733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa08f701216726678e4501568a4bf35b98b79c21adfbda35758ee94f0570bec0. 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/QMFME2179074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649609f29341c2e1144e28a59aa820e382e9c137bf4f661883f746697cf9cd11. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FRX202330072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d93e7f79811ad3ad30dd30ebe58b304d6e7630d9255fa1658573554b37a37f1. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRX202330076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc887c40b54e1e16ba137744a49e8501205957a81d355cb78d52634954d78e5ae. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:24:07Z), 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/DGA082282428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a0b9eaea982f218bcda0a5ad1dda75637cbe65c8ec31e178228d84b72dc42. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR96X2360556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd72d871c0e27b330139b126edf5406e559e6d59391f6549406608779c8e22a2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:08Z), 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/FRX202330085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649609f29341c2e1144e28a59aa820e382e9c137bf4f661883f746697cf9cd11. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX202330072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d93e7f79811ad3ad30dd30ebe58b304d6e7630d9255fa1658573554b37a37f1. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FRX202330076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc887c40b54e1e16ba137744a49e8501205957a81d355cb78d52634954d78e5ae. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:56Z), 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/DGA082282428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a0b9eaea982f218bcda0a5ad1dda75637cbe65c8ec31e178228d84b72dc42. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:28Z), 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/FR96X2360556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd72d871c0e27b330139b126edf5406e559e6d59391f6549406608779c8e22a2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:21Z), 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/FRX202330085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8afd16a7ad9c3eae5a35d54b147f1bfd27032cf842764e364e2d8c0608a26f6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:41Z), 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/RUAGW2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba770fd7318f0c853dcb08bd7e72eba41f4fd334a8d7501143a892960c6c08c1. 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/RUAGW2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23058f71eb76cd79b72c9b86f2b4b84e76adbcfb836ffc993322d5922f5a7088. 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/RUAGW2400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d672238a98122a2fc2f089406e8e47a90ae0c9733249891702117347d3fe44. 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/RUAGW2400524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ee365c6ff2344a06a087cabec8ae537d13993e7229b543e5a9f0fd1d88dd8c. 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/RUAGW2400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0651a9f735de210bbe074758f6a6606e1a4b6979bf781c8c077889803f89835. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUAGW2400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a79b1f0eeb9ffe91eaaad5b47a6be214c5769c659e3cbdc4562a3afbb3c432f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/RUAGW2400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68523a80bc28510c424a7ec095001465fe6d6c3460a1f55bb43463c9ab31bc2f. 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/RUAGW2400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23058f71eb76cd79b72c9b86f2b4b84e76adbcfb836ffc993322d5922f5a7088. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/RUAGW2400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2b54f55e47559ad666a9961c80c16b861efe0812bb44165a946cb878b249b3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/RUAGW2400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd871a8f75d55babd20e3426d6636f19d42ad042b9b3423192614a7a1e7512f. 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/RUAGW2400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb0e50ffbb6210067a40b412119dbd6e2933b905f4d99d150ab94f65cff99d9. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/RUAGW2400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53e1a93a6578c70e4f29e7c3edcc049800816b1b35e095e84843fcf00b5654e. 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/RUAGW2400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dddc41f58eb799b4f161d9f27ddb47dadcf6bc6797491c75ac50e150ce352d. 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/RUAGW2400535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3438ed3b063a4a50aac2ef5c9d74ae6a725c56440d2f2a318c73c282dad394b9. 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/RUAGW2400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938ddde6b0124505d87d0db22d4a11452d291f547d81a164f6b10d23a06d98ce. 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/RUAGW2400537.