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 0x2cbfdb8c438febd0a9b07594f78b39d865a1c422b0b13fa8fe2fa29a76acca0e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72811ea6-e54c-484e-a052-5603de369c64.json and https://artists.proofprofile.net/proofs/artist/72811ea6-e54c-484e-a052-5603de369c64.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 0x4437ed940fd30a5ff5960193b3dc1a0f263b00d59b214e9a7696e021012b1313. 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/GX53U2429903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d4315a4083a513318d52d815e12438fb0177ff1734ba943f5cc483898f5421. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GXF9Q2587272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4f061a55577cfcf11a74d2bff0b8363fa411352495d1d41d9f918efa453875. 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/UKXN22534261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c843ac74146a26cd89641f241b2ce5820dc14b051527b1a2b20cbe90ddcd74. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/UKXN22559693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0472eb6b41186a05640f70ddedf7b61752a87ee7bff550f60fd3aaf6aa91738. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX3Q92535975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e52690df82cc89b43c4979a9d5976dd0dc58a8ebf41cf33fc7c3588f3a46f7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:58Z), 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/GBMA22593467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d95c442c27f4a3cd6f0b40d2f93af2d96cb9ba14766092810a6dde3b08acb00. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GX53U2572649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6fa3bb6d5f82025daac3091170832fff52c4629acebc3406826eb440c08204. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GXHAF2534294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d1fe59c88a9b51b068a32714814ca89435238f222a5c7ba2f6ec02caceef95. 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/GXHAF2566654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ad322540a61a1a4bc72da649da80090c02d96830e35b0753524d8bf87e81b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:02:31Z), 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/GXHAF2582115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51975d331288303e27ed2e9739cf409c6b4976c33e20426ecf0af3b0725cfe73. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:04:15Z), 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/GXHND2550587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9ac7b232948abbfce7f70c716566ae02e33a2fa7469453bb1a41e98c6f6d2f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX53U2666544.