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 0xe42ff6243f0120c9453b1871cd25840f68e1dc73679e5394757356cf3cc23e0e. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3247caa6-f3de-4508-b8b0-e27677092727.json and https://artists.proofprofile.net/proofs/artist/3247caa6-f3de-4508-b8b0-e27677092727.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 0xdae2db16eb8f7b85be81210d0b5801c9e36219953975aa6695e3d82e9da28442. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBKQU2101785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ff1b2e85f1bdd740181b3d1ec8f6dfbba593a35d0651ff90d8ae9d268c6949. 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/GBKQU2101784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804a2ecfbd14faebb7ca2ab29500cc50ab0ca9a0bc8abc6494a396115500cab. 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/DEW871908978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d861923e7e1aeee8d76c6f0dcdf96e262b43c319ab2a299bef0dc111b5df99. 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/UK6AK1400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3c4e4ae0dd9a6abdb0ef4fc041b774cfa371b3362b4bc68ce3cca3c76b4bed. 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/UK74K1400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84474cfb9ff9dae5d35451e99e9a7b391b6ea08a9aaa5cfca682274c2fb987e. 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/UK74K1400189.
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 0x5b6fb4410b3d663bc948876ca02acad463195aeeb90457d84453c8d5b383b0b1. 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/UK74K1400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7770a632c21872ad3704964da647c35c13c6e915d149775a509081f9d5e2b1d5. 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/GBEWY1200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194e370a3c63300601c819a94bf81597e9818daf358d0d71de08b15f7a66e04a. 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/DEY471612218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc911a32f43c251cf32e095d59d77e917c993626e3ef9d1db113b35ef3bd350e8. 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/DEY471612221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b7dac05acef82b5a4c05a5635623e1dc2080963d59db12a468a9bf61e59f1. 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/GBKQU2243656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930e32f70a2e99fe204877172c720c40d88a97fbf8eb31b24d9448b8ba474167. 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/GBKQU2243659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714855685ca071f95646e69755d05f179bd4dbd9a42be367ab3d15ca075070fb. 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/GBKQU2243663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c5eb51c066745e708b9716f1da3a97a9c9cc484d9d1c88b2fb0a232c8843ed. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBKQU2243665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d0780e9f09f00de4bf29a40bbabcbb0f49c1977fddbfe08f9bd266906bfab8. 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/DESM41500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e6e1b57bcf263fcc31cde954a834d48e1a42350890754041004695771e14d8. 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/DESM41500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787fed77ac5b63ac9182c2a25346376bf75fcb887155c17828097a16aae6c580. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DESM41500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e3eae2fdac63208b5894714c558da208dff574e0c6b478e9dd2a6dc130036. 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/DEW872405481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f4b22c169d77314d4ef889bbf54a0973625db7e380c58d5bfbd81a7e3be5de. 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/DEW872406032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a2f3296443c38ac8b1634c619d5903ae3033d7867058fef55b5e29c86eb49. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEDL80901490.
Warm & Deep, Vol. 4 - Deep House For the Sunny Days
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b5f26a05ec674ebb6b67b73be47bd446656d191b10d55e674a92f8a24d716d. 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/DEW871307910.
We Get Deeper (Deep & Tech Collection Vol. 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec123c64e09f983ce688f282186700350ad062d718d942726e89e3724a8d46f. 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/DEDL81101383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac1ddf82382bcf0f9edad9b01dd1e9e45af716fa995f68b99bc4226fd33efc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEW871307626.
Disco Electronica, Vol. 3 (Underground House Music)
Body Music - Club Series 01 By Jochen Pash
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8116b383cbb9350011807c82db718824289715c3e28ebfcf7fa930ba53c8ac1a. 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/DEBE71700228.
Made In Germany - Tech House Edition, Vol. 4