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 0x9ea1c3498d2a231fecb2329ef3fa7a81d955308c3ac4492190589787373c6b64. 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/66f937db-d19c-45fe-95e4-e8156d53a060.json and https://artists.proofprofile.net/proofs/artist/66f937db-d19c-45fe-95e4-e8156d53a060.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 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 0x5c53735d5aa1f6082ac2f4088d3229065d601d38c958856796ac3c8ca59afe6f. 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/US25X1082943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4449687e581fb91feaf563d665013cd64cec266abcf46cc135cf6baeead071c. 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/DECY51268077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb47313ee59a0b4c25fd27d146d601dc2db345a130fc30bb6fb083a042b4411. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DECY51268078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4b8d4375b9e0a2db8d725581a28d968bc0cc586508c6c38f48f1c217e5d215. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/NLCK42231751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab1728e89ffc39e62a3271a149a7f17a33326fad3b361e7925829d9b4b8870c. 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/QMDA72437029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e0738f5a60a460b5fd53722808a5364e55c924935998916ab4f8e97e14902a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMDA72437032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275ef06f75f348e89e0133903289ebbc88514e61cc9c72db91c346af32e3b042. 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/QMDA72437034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c59bad87f881ca5fedf12243b03c2ac3b014bcb0d43d315bf71e21abd899a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QMDA72437035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d9cc9b4aa988bd689e30bb808f57b105a1597f0b989cc7a0c81cc605ec09eb. 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/QMDA72437041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a041e10b0c8d81336e51caba43419f50b65ec70051d759356b575446d07337. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEH742230774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729292b76d01d003cd5b33468a4cca1fa55f29dfbffb1162b8861c4fa0b79db2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TW2208884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e4b9d1eb74af1b2ff5c1259e3beccb66412da3d5f89bfef2e07410d41f1170. 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/DEG932100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b115b1c76b79719dc213680ec1c06bc295d7282eee7c951b46b8209a17f691. 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/DEG932100731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcd4929842b372ce0215277abe99065c96e6d66c680eeb74a7382c0aeb7b9cc. 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/RUUM72100896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd7035f59625e13812b3b4c30835b486220ba9a163f41ca9a9a98ce5b44d0c7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEG932002961.
Ellen Allien Presents We Are Not Alone, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81fff4c44ec6d9f3827fab7628a4015d2dd478f51618d3b4ec11db992247d7c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEAE62000052.
Verish - Nocow Make Music Great Again Mix
Verish (Nocow Make Music Great Again Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9168b39c5fb0ea9763174f01b39d031de528bbb40e521c3a94ae377008e53486. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR96X2578772.