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 0x5a01f254af3f7f8f0d40c0d50d5e7aec5e86af32e9108f5fd5ee041c70a96e05. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5090fa75-750d-4180-b3f8-d582ef68cff8.json and https://artists.proofprofile.net/proofs/artist/5090fa75-750d-4180-b3f8-d582ef68cff8.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 0x8a81cce92da1bd46437805dd6d06a8f4069d779908d96dbd1c295b5157ccb5f8. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/DEH742222592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9db3f43cff769d981e07d8478478e7a17e6cead50d6f216245173b71058d218. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEH742222593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed1d3c7fdefbbbb3e7e190a283e4edbdb8ed0904d8f4ba629f10f1c9efb8daf. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DEH742222594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6916182c304e73e72096655e14949788bb185f2e23d3d4a5eda2f79d1a3a7f. 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/US83Z2467748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6520938a474b86ec1fbdf2779ebf06ee6ed45c65eaf64d0d2e611c5f6acd26b5. 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/US83Z2467749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71995eb6af28aed0454f9dbf1907dcd89ff4940b26631ac260fed16a239cda60. 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/US83Z2467750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d01a55088aa2ad0f9b27cb67d0ff8cf9440e84781316d9c848e51c97a0faa0. 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/GBKQU2327250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2849abd6065c90bc393401b5532bfd47edf767e19d337f1015cc1a239c2ed64. 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/GBKQU2327251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e570e58a533b97f10ab024593ddc352902807d66027d3f542489ef23f6e2e. 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/GBKQU2327252.
Nothing But... Deep House Essentials, Vol. 10
Possibly Impossible - Crackazat Remix - Single Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb22a9dba1a74ac6d04e2c68875cfaec9982796b8372b78f63394b8376759600. 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/QMXZD1100475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71ff998e9740cbd3b08226e571850be23541795fbeeccbbbfaaac3ff3c476aa. 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/GBKQU2458690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1298a49e750fd7e7183bb32ddfbe33d711436ca19296fa1e79f2b939b236c031. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBKQU2458693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd13604d6472afe22f4f3b0efab1828d5c24bb4d493cc97c06d4786915edf98. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU2435306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd0648f7246872e0df32021785c969af4c67801b74c5622b8aec8f7f700fd45. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBKQU2435308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafec99eb8f1ee457323e05b06eca69e3559dcd7881c098c664b84632017815f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU2435309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f436a75b4f2efe88f33ba41093919dcba8e006a9dd24ca007ac93e92d157b52. 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/GBKQU2435312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84669039e3639ac2b368057cbba764e98bedc356cb88278a0cb317a1df025ce0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBKQU2306541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b7099460c01e27377604f270387f0fe7f8ed1b0e716c0847491da11b87759c. 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/GBKQU2306545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe977503d5ae76a74ec0d2cbb44d3215670949fa1536adf065840fe3de576dd. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBKQU2306547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9c191e80e97a671e930bc603da61915252c8a2c40e8e3d49a15e986fa3d01f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBLV62110824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94922d426f5b7296e52a8caa91f2c415f5dba2585c7faf1a7c82d65df369f8e1. 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/GBLV62110829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361ccf96f34eb2ddabdb5bb885fdc73e0fc197d3838cd9c74157bada8a566fe2. 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/GBKQU2442636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d2cd548fa7fecf126ce15cb1acc756be1f71f43742a0fc3cd22c807dfd3b82. 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/GBKQU2442637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc1572f2f5c755cba367359e9bb58f8b59b513fb892d4a3a78e0b00df40c93c. 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/CA5KR2223344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15063170de82e5c18443d2b73413a2d937732d1d2b6ddad26b6bc0d58cdbe6c8. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/CA5KR2223348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105d2d1d839aa84cde5a37c9f6a8a94b545ffceb20f44d7df6dd25f4bee16232. 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/CA5KR2223349.
Nothing But... Deep House Essentials, Vol. 16