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 0x1577c0b730c40fb6720d8083b1e6bcdfaf3042655c660a3243ec35aa65582f98. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60319880-1f56-4e43-abbe-983d4f099d4c.json and https://artists.proofprofile.net/proofs/artist/60319880-1f56-4e43-abbe-983d4f099d4c.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 0xcd8f657a1edfce191bbb334d1588c0c25767fb35daedb711c37da0ca909a8d1d. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GBFTG0500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f2efec34ea3e746ec9eeabf9c0e90290913a32cf73d77a4382f548e1230eb. 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/GBFTG0300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2660a0564f7b886f5d949b985a1005c42415113aeaa7225bbe1b459f4037d4. 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/GBFTG0300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff30b44538a4802b635a9609af8cc13b5e53dab4251db523753b3bcf838abc84. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBFTG0300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae96f1b9240e2ea6b9b43f55961cac94b8ed9924371121efbab73e89eaea623d. 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/GBFTG0300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8f57fe38a515df529c87fdca3bce566dae5f0e4f3662f3d671a49825445f7e. 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/GBFTG0300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8105badd5824a11a8f946cddbf4d4a7e92fa22778c1edf2802a60f6e76abf378. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:16Z), 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/GBFTG0300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83f43ff2ad426aca044ca3888f85fb4c4dc23a8ab8a35b34bc6b7f74e770d6a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBFTG0300025.
Coming Down / When You Sleep (14FLR09CD)