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 0xd153425178b616dc4a84bef4713b9a7f9953f9dc2ef26367b37e71d97db91851. 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/d80ef9d8-74ab-4f7a-88e8-58fa48ef36dc.json and https://artists.proofprofile.net/proofs/artist/d80ef9d8-74ab-4f7a-88e8-58fa48ef36dc.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 0x2b2537a7b9cbf08b67699f9ebaef36d2cc3c107f13386f60987a577db9752930. 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/USUYG1052245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee37441460e8500af1cff9f07e626648f896d812387317d55a425fc022b996cd. 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/USUYG1052246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4d9b45079f7deadd58beb692fe725124e0896903177839abb43af319625a3f. 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/USUYG1052247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374acef933f9233e8090139c05429016aba6d6b1433f772b4f0ec1f69e9500b2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUYG1052248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff6b89117bacfdd34e871b602b4da43f406dde99c36c470b0dd395d796452c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUYG1052249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fcf129c2efb98231f76c5d87546749c8328bcd1c97243f73787e8488edb0b7. 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/USUYG1052250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895e13f43d1d82633e1caf7a9f28bb9f56e1187feb0bb1bf0b5925efa026ce90. 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/USUYG1052253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9b3c03a71729457678d03656a1c6b69ece214e55b20481602c9da5f5d2cb4d. 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/USUYG1052254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47783d576e94ce1684590d5d7b463d3d2e810901b596ad9b77056fdc424e50d6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUYG1052255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448593748c2fc14b6c8e0c697ad74f0f49a9244c2c6345d65ab800584d773b94. 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/USUYG1052256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97427f5d0d4c559c43c0764479e07bfa38e2a770a30d608815879eec1113d38e. 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/USUYG1052261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb14fefcdeba5b52d90db9b56314eaa0ac795a37e669abb176a02b14c1f2d3da. 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/USUYG1052262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3984c19fef7560bfb3f82a1c298ae05748256f0d6bb55d2aae4a43eb6d8d114. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USUYG1052251.
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 0x1a23d70f484f1cda99969ee21b9cad9ec80895a4c6486db58d0cdda8fa61eeb5. 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/USUYG1052252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ca5626fbdb09d388e071588d135d606488c9b27009e47dc7c743072aa5fd9c. 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/USUYG1052257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad85a8c5006d15866d7720d86ae4dbeb82ef555cad06ac8fc425817ca1a832c2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUYG1052258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0271715d291a10b4b056dca559ee2ea8741d49eee13c7236f236a118043106cc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUYG1052259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f62d45fd82145e73336046e63e8d731551510a66b577893ca52fc28452890ce. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USUYG1052260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4706011646a22b702a19a3d5ae744b12210780aa420e2a2763970e4a00b982. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USUYG1077287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be65543e19ea887a92d27501f8fde21ab7185fb40bc7c3a6cb96199ce25aa58. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZ9JZ1742983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898779bea04fc02400285c3dd9ae4f792de360977f380fba326f9b9774bb149d. 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/USUM71210095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dd4a78b775e1c47bf63c6eb51d00902c2d738244c063c4725928934209baeb. 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/QZDA82215186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898779bea04fc02400285c3dd9ae4f792de360977f380fba326f9b9774bb149d. 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/USUM71210095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d5afec664c596f822d3e541106544f6b5770879e03766257837f507af0011. 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/USUM71303358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6587397087494fe2c045250748db4065694cf71886e515766da9ff5393ef72f6. 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/USUM71303529.
Bastermating (feat. King Chip, A$AP Twelvyy & YP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4907af9957dd976c71919c46a361598525732c796f6bc56eee3177c734f91e2a. 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/USLD91722861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4606cb1933efd5c20870d70f93341c944a0d097d99643639f1977b489eebae0c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZZ8B2369680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe652f0a0b969e70e48fac90f49affb65384ad64fa2cfec9fc240290aa0fc5241. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GBRKQ2341898.