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 0xd886bb979c76b17008f4a17cda9908b63d11528bfd22b2cc3adfdbfdc9ee8bfe. 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/93ffb42b-e311-45a1-b0a4-531f2ef6cc22.json and https://artists.proofprofile.net/proofs/artist/93ffb42b-e311-45a1-b0a4-531f2ef6cc22.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 0xb6c4bbcd9a48b6309e6517a152c0c12a355e617ccaccdf0af39a9be422050e83. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/AUBEC2160719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cb34b023119af177d24673e80e8b05d051d602299d362a1eb4463916f2894b. 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/AUBEC2160720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9120bfa32ae98ec38662594309fffc71f0c438fe4231b79abe91d6be754d25. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUBEC2160722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a52d852229bbd71c77571e80ba735c6890101e6ff6346444e81692f4ae639f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/AUBEC2160724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3785dec5e2fa7b969e0176282c8cc14412b6194383d184b13cb3e67c9a4d9568. 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/AUBEC2160726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6594ccd1dee24cbad6b882a600b8e7dd7f212ab6a665680202c63552c8b95af. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:37:51Z), 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/AUBEC2160730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325343a8b539c9d38a7f9ea4f1fec2c1b6c362e87914675066e1b4a92f1af6b9. 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/AUBEC2160732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79929eb118428bdcbeeb495079b4cfed98f316859df572fb73dbb5a37d2c565. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/AUBEC2174331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23702c653a11e8fae51d73122137e22560747840289309c376d3ed2384c1b1ba. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:22:18Z), 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/AUBEC2174335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d26ae169e003c0eaba372cad858aba5d2783cd44bf63b22d181e967eb8d896. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:37Z), 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/AUBEC2330025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0853aef5aa63564c15cadec2a6302236a21e14ea6987a28d32c2eb486a7674. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/AUBEC2330026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f252a6de2c134dbb67e77350239b7d473ef465fd3a09579561b8247629b61e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUBEC2330027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e599f89f9fb4f442c2d1cc59348826ef298f45aee0d325ba419ba922b8647b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:56Z), 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/AUBEC2330028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe733af2da4cf1cf3fb7973f2349c1e6cf9d63ca1ad39a105e301da340a9990b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:52Z), 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/AUBEC2330031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92bb54d4409fb48a80a3bf1d33637080822b224e07b84c1a7305e13da363176. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:32:39Z), 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/AUBEC2330033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c34c960f544f647f099b889f37d8defeb36088cb9152a00ce8038054071f0d0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/AUBEC2330035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac07c3ffdf9719e83a29c2cb7c62eec81b239b708a997628d09bdcab8c92cc28. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/AUBEC2330036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0342d5695212f9f4339b127858a2b890cf2365756523fbf95705506f953c7926. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:27Z), 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/AUBEC2330038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980c1d7203b49fc6d4e9e05bb95bf2809d6cb573b65cf12a12faf58aba5ead11. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:07Z), 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/AUBEC2413554.