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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b5acddd9a8b4b3ad9376f91c881a9c963b1b943453fffd87b4ba2c05cd5f52. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a86c767-67c3-447a-9812-1538eaa75521.json and https://artists.proofprofile.net/proofs/artist/8a86c767-67c3-447a-9812-1538eaa75521.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soul Jazz Records Presents Disco: A Fine Selection of Independent Disco, Modern Soul and Boogie 1978-82
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54cf9ceec49a93cd93d1aaac60fc18e78de540e5f4397090632cc79b0055277. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBBCK1400740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09012875cf22adf4eb2039eed6874b31b262e3ec9a48c6c0bbb97a037fa618ba. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBBCK1400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715dd2f4814c6dec33863e1da409465e0f552d5273b0253af56777640cea9e00. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBBCK1400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05cece89803462e8b2b916fa4853e558159299a9731389b3dd6f25e5ee4261a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBCK1400742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4255ea440d813447b0b10c660b1cc38d2d8a67b739ef1e707a0e6173c3c9e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBCK1400743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85f8477a040099fc36b68388e93ba37bd5fecd04032075d083d9aad99797d2f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBBCK1400752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7be84c66cad8ce3e7362c24208e8815314ae1ad606f3015cb3d345a5f95a88b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBBCK1400744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b127e085f5e8dff4c3b9e3ef9449a06f400c1759e9c02bb9109b23a7e948a4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBBCK1400745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90add568d8799640e77417825a045d254a559f0f173e23ffd3d5f9da3364c5f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBBCK1400746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cbd2135a822ec954a65e686e1124576fe0642c817b5761f209c934246de95e. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBBCK1400755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fc6f9e1df0727479c958c61fbffbe0f293300adc0b8aeee60b5c90dd941e9e. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBBCK1400747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1469842a4768a40f12f2312051c44f683800c393071c4213cf1b128b1d7faf01. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBBCK1400757.