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 0x677c477b6c509b55451f79e84a00b5ea5633eddace09bba72a4dd869bd817f70. 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/65b19da5-822b-470d-9fa6-80003bb34f95.json and https://artists.proofprofile.net/proofs/artist/65b19da5-822b-470d-9fa6-80003bb34f95.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 0x191f9ca9d85a25b5526ce840615027a99b0d6803322f05179ec060723f7ae565. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/SE6852300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51274b9e1de04e104ab22a5921208c7e0c27ae4123417213781761d5eee89d3. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/SE6852300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0701419929a62ab274b47feab4806244091e65031ab3144465b18f5746d103. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/SE6852300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09bee4d3d0b58b4bd780bd60859b490e198480f8ab49aafdb0f925d46156ef5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:00:09Z), 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/SE6852300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c6f7b7ee8639c72de2e2eefa59f4e5073c10f3f5c1a01342c68eba827486a6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:46:39Z), 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/SE6852400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a46261afabe1ffb84f20d8a0ef0a539890ac4725127c54809dbbf9d9330e12. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:22Z), 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/SE6852400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2240a39870c22e1e3ee6fc10bf19e934d244d86be79ce5dfda176dab56846217. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:14Z), 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/SE6852400202.