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 0x240606c6b00e02c6edd125fbb42d935f5d55bf14be7292b84fbdaa7658f3ec3a. 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/58bffe6f-ea84-4c66-a00d-afeb4d5f722c.json and https://artists.proofprofile.net/proofs/artist/58bffe6f-ea84-4c66-a00d-afeb4d5f722c.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 0xde55f30efc22cacc4624940a02f1553979663d27ccb0806e76a01645e8779e2c. 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/BCDSZ2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160e8e4138bcb2017a47a74e3e4e04dee4b8675afa9a64d21533e407c8d0b46e. 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/BCDSZ2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceced395a509a73e50d3603678d5754027fea6adff99a017bfca083709602c7. 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/BCDSZ2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0677fa024e9fa8a473ca13a1c431b7dbef77bb2e281962915ec740c9ac6e3a20. 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/BCDSZ2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc286069d9d382e23b71f0b85413a61b4dbd0f21a288f6a7d8263332ce312dc7c. 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/BCDSZ2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925802e7e6073237335eb1b96e64a5e5e272d78f14b0188480c99e00768a422b. 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/BCDSZ2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3306f240b88fe388378b51702191f7aa7b4a222ea63457af73f9efdbcdd997. 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/BCDSZ2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb56db829ef4b7684338b618b576baccc9ead80afa25e3066b95954a5de069bd. 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/BCDSZ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4992dd400e48dc35468d5f3fe7a2858a273695d2c9925443b2dcafadf3a9d41. 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/BCDSZ2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1901b31fa7e8e9af5b7a85f30e9f976879a42991d3222c37c368a561b9f93e24. 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/BCDSZ2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f820eed1907dabe7dfae5426ebf971fce969eb42d2f6808408e3612abd8038a. 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/BCDSZ2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969e4741423d62561b71b54cb98b3e9791ca241add0549b0667ccc63b3a70985. 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/BCDSZ2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b4cfc9a0e8a4690d99b5ef4e7673782a755a9bc3a20d469c5075a62106cec8. 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/BCDSZ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd422b391ddc90a8432688abf200833548d1209cabac8cb9f1d64b6491c81971. 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/BCDSZ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadceccf482702a07f9fc3a81c9d2f50e429e0f0aa2658a9bee0014f82263425. 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/BCDSZ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f59c3825b3e28bafdc16052dfbe40849681cb36243f146586da0ae8d28ed08. 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/BCDSZ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6792deabf29a448eb38f7e23c1d8b02d0519cb674d1b361d7fd476b5ec7571ac. 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/BCDSZ2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79948bad7726f72571fd632cecce9487a2971c953b21cc06102658fc45531155. 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/BCDSZ2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10579ab29aec5d0b8261b43b5210c1c56b25413c022c5d2966a77d932ffb4e2. 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/BCDSZ2400012.