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 0x992eae9569a9387345575e86503f1f7725db5287f955500a63c1975c96851be1. 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/8711bb4e-ef89-4446-89d1-8270dc43585d.json and https://artists.proofprofile.net/proofs/artist/8711bb4e-ef89-4446-89d1-8270dc43585d.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 0x0301c0baef86e04e947ad47465e3a450beaa6fbd8acc00c09c06d90be755a089. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:45:35Z), 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/QZHN92297713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6586b4347c8555ce8b90e0eed404533e7e02db305b5420c039d629f42b0f1d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DECE72300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85360516d49054a891f508cb8d12b324c7388fa9dbc70b9f0c97e44378ef703c. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:01:19Z), 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/DECE72301424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada465d574e86b4a15d42d94eb67a83a17479cb1e571020876fba17446c4939e. 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/DECE72302218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4671f5bfea52e36706f81ce85d8cc2f27183d89a6bcef2e388cf8de71dad32. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:37Z), 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/DECE72303087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd121b34319de5963e24d88ce553c2bac9db2644765722ebfc5c7f6e1e74a85c. 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/DECE72401365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee24270d33cd02842b50eacd0038e9b4226f8dbcea3416e5c15df1908eae7e80. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DECE72401366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ce793ceb319fe3ee45c489c518d9cf044282b97e548b3c6a2ce45d01f40da1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DECE72401817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4c201ea45cd8ee3d86857e4238efaf4caccd80785bed985ab843e5dfb67cfd. 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/DECE72401818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b46bcc5c0be2aa01cd1866e415b7992cc9bf0ef7228c624752a29d3c5d3603. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DECE72401304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee24270d33cd02842b50eacd0038e9b4226f8dbcea3416e5c15df1908eae7e80. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DECE72401366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c415be6a494ea25a3d1339ea1b486d6e4eb7751b22820898d1acf644857655. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DECE72302826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496cc788f3fe084933c0c8c3038c66f1223276b9fbe374d016b3546e6599fa16. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:29:09Z), 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/DECE72401820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0269ec93423a504d080be643ffaee9a754c3b517da2d665bcdb484484f7b0f7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZC62217184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0269ec93423a504d080be643ffaee9a754c3b517da2d665bcdb484484f7b0f7. 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/DEZC62217184.