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 0x4fdf0a52c48283e16a12d74936d85295d81581b348794e9bf737ebe4ce6dd69e. 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/0c549122-98e2-40f1-9735-41e4f67bfa24.json and https://artists.proofprofile.net/proofs/artist/0c549122-98e2-40f1-9735-41e4f67bfa24.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 0x7605253396ba7b196628fa42df22d2bdd010eb159612ebb705a4205304b9e554. 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/ROGRA2202743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343d0049a8477cf3b90e812bc4bb1542ec1cb39db27e7d10615abb8d0efda165. 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/DGA072384116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683fded8ac002347e4e19342b844dd436db87f09778a34eb43a72b5160c03d3c. 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/ROROT2400760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153f291aec6605f7079251f0db6e87f13f85ee67262f236c5bdbbdf78d5f5e1a. 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/ROROT2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08918a97a9f787b4f033360704db3805f6890621b4dfd7cdc59630337bfbc99. 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/ROROT2400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aed8c16ddc300886e4c49b64acf86a3ab8c71818cdee56f91bedf2ab9fec1b. 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/ROROT2028301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6cd78b1c206dd0a7fc2ae9e508935870be63ff6354491c883f6b88ce634927. 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/ROUM72400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f297c57573211701a8eb75cda85a328c616e4dac7d924eb3ffd29b3b825edb. 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/ROROT2054601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0377cec7ff1df71836cfa695b8375fa888a97449a90b54dedbd71494dccc5006. 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/ROUM72300289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325c84425f09b9480f3d63c13019053f6d025d1b9f122a434fe9f57a8c2d7266. 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/FR96X2387779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a7b11f55904728623717f1cf8dc47d5823a117ac095f94746d6e27361ade64. 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/FR96X2387782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8760281277dc5d4ddafc6fd47bc3c506eb02b7a9ced508125f606e3583dc2d7. 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/FR96X2387783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fcea57c01b43c9756991892c7f5c8722c91e52d8da45a3a7c69dcf45a94ffd. 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/FRX872236363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1bd19e4c4cc5524e145256b9d06ccf517b9f8f537c8de2e749ef968f5008e1. 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/FRX872236368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb458b4e803e381a997357af4e9db305097208afcb86f937056c7c4f8b4d2d6d. 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/QZDA52267186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82d890e3e1828804e270fddab751b728368c6c1fe2d7ad3b03f3a16299a35f8. 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/ROUM71800027.