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 0x89ba19ab945e21dee32a0766a69e0ec419bc90e52cb25f85e6decd50b4087e61. 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/91f072d2-0ce1-489f-8183-5558525f01b4.json and https://artists.proofprofile.net/proofs/artist/91f072d2-0ce1-489f-8183-5558525f01b4.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 0x34e12f9c2d15fe616623705d471a9450fa7855ce10f6cad31468bfe3141e2c20. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/UABM12300571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3e85cb0cd55a28b8f2154574459dee61fbd5ed64229583cb8f9a61f3f00c86. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UABM12300676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842b698ffae68d14099bdef5d6e6772218bc590b3acbd50e8839550498bbc08a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UABM12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbd1a7c91de23b6d8ccfab2de06c3d82e1082364e98ebb1cd0a473e992ecc5c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:26:29Z), 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/UABM12301081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8aeaaf7792b44ce9f6a13fe9737e6fca3f8a3e697e53557aa36cac13496390. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UABM12300996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5300ae2d3bee58d07817145ae512b90e875679cbb38b08fe00b85590c35364e8. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCAIK2486452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e087d433bafa6fbf1f53555411b5811122032afbb932c5841eea9d522a6a6f2. 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/UAEO12400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95566b7f4cde4ba997e620f2fb820d14b7b0151893cf3836820fdde6898308a5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UAEO12400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee7cd92c5406dc6f46bc95a879006e332a7f2356426dc3645c5b372f88e17ab. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UAEO12400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b1128a73e0018a6dc54dbce813efe2caebcca84cbee010aac362ba134cc72. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UABM12400972.