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 0x468d731725f6fc8c0e066a5af2a00e1eb78a46c4fc374a672f04cdff11b1e5dc. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/913fa930-2703-40ee-9ef2-6bd5d87ed80b.json and https://artists.proofprofile.net/proofs/artist/913fa930-2703-40ee-9ef2-6bd5d87ed80b.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 0xa7aaf7ad58a198cc05875cde71e80f1a230c7719f06095bce5c75bca5e7583bb. 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/UK9AV2300676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bc09d0b9b7b6a376bb12d57184c61e9facf808c299d3be4a63b896897b8b58. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UK9AV2400907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7a67fad51810d37583e54c71126ac67634f8b20cfa5971a2fa7d0e80464c32. 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/UK9AV2500997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae298782f05473004a6e341e4e013053cad27fdd97192d07139c750750551f4. 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/UK9AV2400751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ab64ccdab1fbe5f2cba959257b9aa5fdc79f465eae1a24f14c83009a5e6cf1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UK9AV2500993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bc09d0b9b7b6a376bb12d57184c61e9facf808c299d3be4a63b896897b8b58. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UK9AV2400907.
P.P.R.N (Physarum Polycephalum Rail Network)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7661212aa0231c19180eeb2e7fc61b27cac7f12ee0bf8d42c4b364b84ebc46. 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/UK9AV2500994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aa9dec1a2b7fa40966dcb465fa8c25a4a77acc62714f7993ed4a446cd87cb8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UK9AV2500995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455b86d752acb4eeeb65e787dcc37fa17646cea2fb2242080dae381ac40ce48b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:59Z), 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/UK9AV2500996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7a67fad51810d37583e54c71126ac67634f8b20cfa5971a2fa7d0e80464c32. 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/UK9AV2500997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a51e03e273b992ad261346f4d2db4e6bc71b2ec488803b1c2898e5fdb79a7e5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UK9AV2500998.