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 0xb14e808827fd1b087e09f1baad70bddc67749862b65c04b873865db663e766dd. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad2b6efb-a273-46e8-8756-60be293b07a7.json and https://artists.proofprofile.net/proofs/artist/ad2b6efb-a273-46e8-8756-60be293b07a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Natman & Robyn (From the Original Motion Picture “The People’s Joker”)
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 0x19e71bde61d92080b8daa57b0f4989dd72a59ab487cceb363876d52d3c7f65c6. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZTAU2448720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d527188ae8bc913363a9db1993dfbf09ea4444767a23cb9d974ab0a9707301. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZTAU2448721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382f95930f8c1d503a77c9e5c56371799dba1a7d4b3272c2f3ffd0b6fde87494. 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/QZK6G2308075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aba4e84702ac6bcf9be23b54cfe3530080f64dfd89a589d3754397ffb40edd. 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/QZES62132373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae6ca026f8226f60b5a35d71623187e33c0a5e86ad733c5d1c90f5f7d77fa15. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMCE71303061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42db0c4f34cd33a406321b5ae123a6cec775fc20113c2db95ab9fc156eb150ab. 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/QMCE71303062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5fe741d7c381f715f157f68faa498a552254fbf6c4cb6677b694f6c0d09492. 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/QMCE71303063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3742e17080a0cb0d063440acdf9efdfb07d8a25bd6cdcef6b59a2f5dbde822f8. 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/QMCE71303064.
Dallas (jackson from online cowboy billionare mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31088655c0d20f99cec4faaf5609c04a821931e83433280761468b1e58b9c2d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMCE71303065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d5a92b888a0fe4984cf40060f86a73f872d59d313c47be04203d80cdee4301. 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/QMCE71303066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5504be013d9369beda792c780ceeed230ebd24275fb2e8da7f2b12c3e1ab69. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMCE71303067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb42cf21119aa04170ab652721719b6c8ba7f07c5ef54daeea743bda078586e. 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/QMCE71303068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4413cab58ab9b0aac29a608399e31d50d37f2b39d72c2509da28c27e6d18e709. 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/QMCE71303069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d14dbc26066b10ef0b8663ccfa4e9a97928a7f48d05cf04e753867d11630fe0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMCE71303070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d84ed4e67d69795e6344a9f1fc5878996a172cc4e9b95b97ec4231a63b22c0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMCE71303071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bd2b19c55ec4c953feccefc14dc036095d148fb5ce1d3cb96f02111af42af4. 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/QMCE71303072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc058c6133843d52ae41ef081412a86461cb9324949d7287f596d0dfcd89854. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMCE71303073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba9e5281c0b9911fa70efc124f4c05023edd9840a4b0d73269ee01ca308f47e. 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/QMCE71303074.
cold weather (GWIZ ‘180mph on the 405’ Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed7ddb5123f1e4d1f6702cb1c5803320d8281223d2f0599a8fd5bb94a2bb39. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMCE71303075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf0639a6b3899b0b5ac20e814353a142d73e56efe7d2d41c210f62882758d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMCE71303076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522ed8faefabfa2357e46af8479e920de5595047456bc7c8908a0ba18a180b3a. 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/QMCE71303077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073aaffb4ce2e1f6bc6848129b717f8b4f0b79f6699fcb1081204e17f6f137c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMCE71303078.