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 0xe4021c88b02a134f621a000520230f291a798b0285a64fc5ac82db22308ce2bd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d93cc342-557f-4d43-9b54-9941671afa2e.json and https://artists.proofprofile.net/proofs/artist/d93cc342-557f-4d43-9b54-9941671afa2e.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 0x566f3c616af6bdb346b10cb78b41ac1bb38b60920361f3cda4b8e0d92ac70b0d. 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/QZNWR2207282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220f3439c6ad03a83b215e282249132f6e051b43c7b088bf00cfdcc0b8ec15a6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA62398159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93253352d0b301a24c4d2cd17ea201fce5c81b3d775f1f48ec93f2a71b1d9f12. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBNUQ2300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac6e8ebbf861dfbb27ff52bf3f45ec69af70cac68f299bc4216544ee40c600e. 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/GBNUQ2300828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e95c0d4fcbb92386b966509bf95ab260da3590ac1825213de9b440ed9c064a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBNUQ2300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d220931bd1c70fa9583b9882996d508c3a31de07adb606bf751792ce7ebbf1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBNUQ2300826.
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 0x089f187d23d60187ac3d5f33ff10fd6045b396771b4ac9299c04383f0f23c7e7. 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/GBNUQ2300825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834127023a67096c8020d864eaa57226451d67259a727107f5d65c64b34be937. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBSCL2398020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0a1db7c4a6c32c6f8f0fe9615243c231cc6a3daba35cd2665c2048b5b85dc4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU2480767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46475a80a6a95f8e45173a2e3e2a1c333d411efc7e4c857cbd451fe242040f71. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU2480769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18daefc782a434eb35b4b68f96bd43bf8f12c06c548a214e1a87a9b7c018fe57. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBKQU2480768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a660dfa22de193d20cebab4ea0bb5236b2a4d3e27503a12e6c738805de0e8c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKQU2480770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bec46d6f6e75fd920b7a253fd592776f08bc7f00ab3829b85c8bae1453574a. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:36Z), 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/UKR6V2410719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddaaa90828cba564061e2b4d03bef26c5b19aac826389c6744aebcc8bbc2274. 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/GBKQU2494880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad537be6b452dd539288ec5823fbea12c8a40487ffd83e7fa3ddcf9194fc739. 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/CA5KR2518816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedef6b57dd92211d242b0c00c07a5c72262fb32eaf04b0d2d2feb3259449feba. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CA5KR2518817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46d905b44ff9d1b4d8c1e9c38bd136b07af219604ddca34c6ac4113affd7a0b. 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/GXBNP2508208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0129adcba4e9c10210ec492952233e8be6636eb8df095a388a72cd4697da05a6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/US9GM2400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e205d5b9350132cd6e13b44294a7ad6ab55c3c09367f9ec060b5a16e8ad13e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USUYG1510977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1454cabac891327361f85e2561b10ccd484ae36e64c0aee25afcbb68db004e3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2356286.
New York State Of House: Midnight Edition, Vol 1 (Mixed By Francis Mercier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ba2f4fe0256ee94c2032ad5f878f96ac2bcf91015bb2dbdd2d77278e3a54e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USLZJ2152874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3542bd87fb47281c4633f63787c4bff0a8b99571b12de5b12c683ade88fe76bb. 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/CA5KR2356287.