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 0x420b7fd2c5fddf370dca6c48161dd2b0458b3570b6a0d7bd81a0d26874695174. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95f880b8-ee93-4085-8b03-3dee30460ac7.json and https://artists.proofprofile.net/proofs/artist/95f880b8-ee93-4085-8b03-3dee30460ac7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Not Human (feat. Espeon, Yokai Jaki & Tahiti)
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 0x45cc34957cdd775c92710e7a378fd17ef334d1f831b2a752dc40a7d6f77be2ef. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/TCJPQ2167434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a18b8cc28b90b1b448e1260520e35ad325fa20009bb609847f3e954127b8aa. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TCJPQ2165319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc34957cdd775c92710e7a378fd17ef334d1f831b2a752dc40a7d6f77be2ef. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TCJPQ2167434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c14e42cec952798b65e5533faa10f2d1b683f65e37ccb0e0fdd0984c766994. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCJPQ2165328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10436beafb6470716be143544bd408bc14eeea1154857ea412b74ffda80098e8. 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/TCJPQ2165332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161122bc48ad5f64fbffd2b71a73761a673e78c593f2175ab8900013cfc7bca7. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/TCJPQ2165334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40302fa5ea78ff9fce06acdf101fc840220944c9f440bd19b59696e5a336d0d8. 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/TCJPQ2165362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c105e35c1244788c3344a35e691aa169d601e262e331dc6f49f44df1ed7804. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TCJPQ2165330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cd810e555e2135da30ef319d7a93e8d784b97b5e3f4fcc1146e8010e9afb6a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCJPQ2165337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af695b1ed6deae5635e457bbae1451c648404a43016a7816c356906f61d645b. 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/TCJPQ2165348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838c83776bb450cfbdbc683d61ee128b4531590b91f0c11035d1425181d8b6f3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCJPT2278595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3e3ce14deee93181335157b5044bdca4d2654174832d54fa2b43cc47dfb821. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPU2227057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eb746bbb74e6d998746569867ac351d4eb822dffa4e9a0ea63cd0ca7faa38c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPX2357273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eb746bbb74e6d998746569867ac351d4eb822dffa4e9a0ea63cd0ca7faa38c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPX2357273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8978336b59d695711724a7e13b711a4d7851335b92daf64887eb22b9cfcb02ca. 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/QM8DG2342451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53ffa4da379c8c0f7bb2a6b23e0bfacda74b7fcab2b96e90fc4ec7186be0cd4. 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/QZDA62372262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34a854be005c5c47e1a98af919eeb444a58b4ae4fc2249711ff7aa53fca10ac. 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/TCJPO2100513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549b66e2209d8b9d272c2f714a23317a8ae8f27b266e854fce9a033d5e1ec957. 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/QM42K2372411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d9e37e6a418c09d2fc035a217b77ee8e08d7c6a55909413fa132927a839c28. 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/QZMHK2388237.