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 0x9b6598771024704c6be5c23b2b916bed9bd0b868f853b37d50ab2a70ef1fe85c. 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/ee299b59-d431-467f-8c7d-acb1a02ad878.json and https://artists.proofprofile.net/proofs/artist/ee299b59-d431-467f-8c7d-acb1a02ad878.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 0x6140bcf437c585050fa127e97c2581734c687e1de0d4a302f909023e77b21f8d. 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/USZHR1800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba78a5674b3f8059cd7d0160feba76bac332709249583dc9449049a9a54711f7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZHR1800952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c267f8a2815219dfdd218e8f48152ea36261b540e36a24bd6d0c82df134a32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZHR1800743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a4db674990a2b46e434ab85fdad23f98e4c4c843f8633716af2bb14862aede. 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/USZHR1800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944fd133c21700ab5d7b6c88550b33819757b76ed2ad030fd2be0d9e4a789a93. 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/USZHR1600477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5162f39a381faff4c3f542c78e80f4794bbeb8dffcfd62fb0a5c037dbb5c4146. 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/USZHR1600479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b3778780f505515fdc2b0ac26a2534a715c75e4bc412ccfc15eb36894f0a51. 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/USZHR1600485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1a4e2d0db9864a9f64746e298541d3802c60656f87982e965d75614023f18a. 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/USZHR1600486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47243c3981bcc2087e4ee87f397df60d8336f3c4aa1bcf7f9a51034a008062. 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/TCACG1581201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54346e5e7939539e7b16268218ba90655edfc690a895550905d6aceeaf837e61. 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/TCACG1581202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff3787f4c668cd078ea439efd1b3b062f20e77f8fffa6cb1cd153776836bc4. 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/TCACE1583380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b17a75c314b9cd6bf8d7e1a3219a1421e4ff476f6c28e60e9a401bf38a41e5. 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/QZDA82065626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9598d7c3eabf9c415c38a90498d79289587d2ee437f81610923e73aa913502f. 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/QZDA82065632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822ecba56c233f3946d245d3dcd73dbc8d8b469f9786673f52d183d23d1cb6ae. 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/USZHR1600491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7696652e371848ba670742f3c079314e26c2a71c284d7b4fc52d7ae2889674dd. 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/USZHR1600598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd47ab81daa17703e2aec7ef4ab0767e37a893f677d4dad1988712f898f2c5e1. 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/USZXT1016258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdded1d7e9f6eda6e43e8164010451d8b3b29e523ea5f1867ba8ef33a821b6abc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZHR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7696652e371848ba670742f3c079314e26c2a71c284d7b4fc52d7ae2889674dd. 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/USZHR1600598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00b44a7148e527d9f0a90e30b7ef76313ced517a05935c2a4a2fa59f299ad4c. 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/USZHR1600596.