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 0x9dd74c494c149c1901424bc962d140c8d0cbf74af6bc5da79e8751aa7d936b31. 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/efef58b8-e4ca-429c-937c-7a07d2728fb9.json and https://artists.proofprofile.net/proofs/artist/efef58b8-e4ca-429c-937c-7a07d2728fb9.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 0x7f74abf946b657cbb4d04c001fdf33937f1f2cfea064645a2d14715f6fe67147. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:15Z), 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/FRX201663075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f9484ea17d8d8e87e4d070fb6504ce7f77b58aaa8354047ae759e44f2cf0fc. 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/FRX201663058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3339e947585a93d7cdda9dd8d52e092d77c4107eb4647e2efcbfad7158f1ea5f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FRX201663062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112d9024e296d23ddb0c802cbe8d8917e73bb4c5df665fe7d8137b608aa86b43. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/FRX201662732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaa18046fa8f34821c3c693f8be5d964745871a3c501fbd8e7ff17fd61715dc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X41776060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2c36bea702aa7df04a2d66ec01998ff308a3440eee67e07abb6b3e4bcb3a9b. 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/FR59R1735465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaadfc6f2c13135a3b7396f78800342fb02305833b4cdea0717f4a2e2c9c4f3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:24:28Z), 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/FR59R1735467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e55030742454b11573528f4eb17d1bf9cbe89da9dc398d373125ffc0a24d027. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:10Z), 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/FR2X42402524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe160dfd192a87be4e9667879d98296d42ee54faa372ef9a7203433521695ccb0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:31Z), 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/FR2X42402525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b943051183be8f3407139fcd703245f3dde1473594946eb801efc77658839a. 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/FR2X42402527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5641b117bdd96a12436278e146f55d3a6f65c52b2d6b9248590020f4d692697. 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/FR2X42402528.