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 0xc6360300a248680e85318ba3cdf9d7d2d52f5cc4d38908bd6de861f0883223d1. 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/473119dd-a215-4302-ad83-75eae05f472e.json and https://artists.proofprofile.net/proofs/artist/473119dd-a215-4302-ad83-75eae05f472e.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 0xe937d0ea84177f83230ac962adc08295f914e628b010c586554463b9a2287640. 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/QZES92391787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44fc1f8501025550ee24a776b725f007cfe7f7a5c49d3de9621c54e2f727cec. 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/TCAGT2394329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ca3a30da66897397ef2df58f53a8ebafbecaee77f94b15faf95dab7ee39115. 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/DKAZA2200215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c283d1a0147d0c8c8615e7f0396485bacf2bd066d568d76c1a5cd0434ed8bfe. 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/DKAZA2200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ec985d08d4f616201cf41021f2082ee2f52f86b888427e8136548342892487. 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/DKADG2100718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae60b66860b502c834b98d1bf9abbcfa8c806fa8dd8c78e94b9c805859e11bc1. 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/DKADG2100476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8d2105fbac3cb4039a41f426772ed35ec8300d75a666a7de5fd0fdf2c18bed. 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/DKAZA2000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b15112ae76a2b331ccc105a39aa858fab08df1a52bb3e6d9ebbefd9978f7a. 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/DKAZA2000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1789adfb8d2c8b941fb0aea186b2375b124cad30eb7ada974ba44a1abd156d2c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKAZA2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca98744cdbe779fc5d7c0ae2e18a919e9f577f83bfebf9887af93fb0523dd0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKAZA1900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77d4ecc6c145a1201de0c3bfbe20aaf6303ccdcfa79fc9b6501174919cf3d67. 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/DKAZA1900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca98744cdbe779fc5d7c0ae2e18a919e9f577f83bfebf9887af93fb0523dd0. 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/DKAZA1900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998f6c1a0a0b1f65751590db78225bb02e5a3f0f29fc94c35c060cee2497e5d6. 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/DKAZA1900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3784a2c3ce67549a2671b9626c6eb9adbfc593742e465a9420a8d25d8dfb3b23. 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/DKAZA1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f4cd23854178419855e2ba2d7f0b7bf3cdc8fcd1e4ceafe8f5f2cdcf3af891. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DKAZA1800457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9b422a106f61c7099e9e2bce91f5a9aad5e033d6bdcb8c6ebc88dd74ebfc78. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKAZA1800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe86ba370f06c80a766159486f075ff5d6b494395f810740003356bfce827ccf. 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/DKAZA1800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e55159199dc8a88e3079da80495fc5b5e389e3e7b5e408b16f5d7b4c2c5794. 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/DKAZA1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6cf903bfc373a7038a4e08960e08f843e7f412096049e3274ac0304bc89d53. 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/DK4YA1800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee15e7a37b7c22173bda3c7e8f19933320491d66409237c836a7d7af9713a18. 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/DK4YA1709801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab47972ef66200b997ef7f7c9325e57b033235ad3aea27a7ca5e0435db6fc18. 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/QZHNA2536781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2455685954e26dfad57faf81c3b05d9596834004a017a4d774711ca5750740c0. 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/QZZ7U2464189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5d047e0ea60cf2b982a7188aa057c73a4feb8c963511c15eba51b98917309e. 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/QM6N22491119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3296ca966529080e89fbd51b2c101fcec5ff9f81bb715f7a5d23b0534c469a35. 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/DKV282300401.