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 0x0d4662247e5a980a357f520dbdda11759090690e750933179d35cd96152a7b97. 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/88474065-3289-4822-a21a-e5019c2cd231.json and https://artists.proofprofile.net/proofs/artist/88474065-3289-4822-a21a-e5019c2cd231.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 0xe334e1cdbe32f33914b11e2142f8d98c7e803a62b04edcc46a5d95d61f1f4900. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPS2264976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9d87368246d99c75ab4498f1f14b157bf5563fd4a24c9066d40c795c6144df. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/JPG102300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3afe04f7e57174ce8d0ac32cf7554edba38aa79bc80b77ecec802c2f711c0f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPU902302525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49050c05e8d48211e52963a01f18cfbe198f9d13f73b2e26d3339954eff84b68. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:54Z), 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/JPU902401636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc086ba40cd192b5d82deb6131e6c89af149a2750ee12441bc75cb6cff7860fe1. 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/JPG102401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2a3bce76a7b7e1bbdb16b728affc4dd6470a18981bc2303e8e89ad1fad3dcd. 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/JPU902402856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74ea2a8d5f0473d0f3cfd50cd7958c3bc5abe038dd315c2477beefabe48485f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPU902403808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10fd8a80237c7cf723cd54e0bf24a38f2cbc21ba0a29dd83614bd32cff1b2be. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPU902500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49050c05e8d48211e52963a01f18cfbe198f9d13f73b2e26d3339954eff84b68. 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/JPU902401636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc086ba40cd192b5d82deb6131e6c89af149a2750ee12441bc75cb6cff7860fe1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPG102401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2a3bce76a7b7e1bbdb16b728affc4dd6470a18981bc2303e8e89ad1fad3dcd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPU902402856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74ea2a8d5f0473d0f3cfd50cd7958c3bc5abe038dd315c2477beefabe48485f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:15Z), 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/JPU902403808.