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 0xd89d6fd3783d49eb03bafaa816bcf229721e32733c293128820b07f76e68b7b8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c95cbdc9-a630-4fe1-b7a0-1806c84c4d9b.json and https://artists.proofprofile.net/proofs/artist/c95cbdc9-a630-4fe1-b7a0-1806c84c4d9b.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 0xb16a8db2c4d3808ebcc843a280a7294c1a5798447d3173a94f721cbbd3a0ecee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEEC31900058.
Dedication To All The Mothers And Their Moons (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efe6b82d2608b9593e993607d51447534a404f6a7a91a76e146e6392b191c3c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEDH72000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa506ee6d4d96f9b177b82e13a22da882dbefa39088cd36df113c1b0da21c2387. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEDH72000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4954e653d74a1c7e85572b3c374b9b8bf03a4820452a50042b2e4663de5fd4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEEC33500611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ff870a24954cba9d8827fb96c04e796a9cce0d199940f1f8c9b8126ddd5d4f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEEC33500936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7adedc2d2f414fe3404e5c3e4d2fc2088e59ed5addda264f15c38b60287667. 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/DEEC33500975.
Random Tools Generator (Denis Horvat Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551defc2181054ef6073d99376862b40396543baccb51dd0d177769bb48a9e9e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM6MZ2499312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42dbbf90d763b0a1e7bda0e2d8a3930a5fb1f6e5be81466b95e311c5ecd0ac3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6MZ2499313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe51eb1fcd766214d36123dec7f789e43ea86207154ea6d117635df504f7235. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6MZ2499314.
My Eyes Are Failing - Imperfect Couture Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e854662c2a75b5587d58356c73bbec9cafc635cf9900d2b2966a55af482e0d8. 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/QM6MZ2499315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dde0c9ad68ef8cdfc73f3a58b2a5e534cdb9e028798ab9e1edba98f3a833353. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CHC652400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1eb85e7d27f0b022bac253324a4561160eeef7fd063c861216bdf572a28756. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/CHC652400206.
Locked Surrounding - Organic Gain Ride Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efdc87fe235164c16ea146654785b2025ffb849d755948dc69a9c6350d93f88. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEEC33501662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62442fa1fc26694ab112242be86c65b3e4b0f8c4e979f0dcae34968364b6da8d. 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/DEEC33501754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87237abb084987a0a133417d28d0a9696dc680dfcb6fa69171b5c2e067cea09. 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/DEEC33501755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44d39863d5f97dbf36132b86bf314c9864b33836c782cc835fcbeb60b3458ca. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEEC33501756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffa9c8f5a5f6a4419cb7f7172351b738c89554942436944a0ce6ee5afc3d53. 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/AUXN22326472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a526c86b01babcdee672ad8c703f01c3e5e96b72d42be40ec82734b643bb62. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBEXH2200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9527fa8feca81c54c62b45ac4a564085daf5bda2076b9dd742cc5ab6f6cd9ae. 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/DEEC31700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557bae159d1987217a83a83fbc1ac2c514bd19d3199b6a103e1c077e85a606bf. 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/ITFGO2300125.
Windows 85 - Toto Chiavetta Retro Mono Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74194f6c6978d6f8c67001f0c709f85e9d3e294de21a29d285b524437287f387. 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/DENC31800218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0394384c9b2581d77d16e90a091e207f77cd1f90e118d2dbf9a3ed91172bd3f1. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEEC33500539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffa9c8f5a5f6a4419cb7f7172351b738c89554942436944a0ce6ee5afc3d53. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUXN22326472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8e68e1170f17598f46aca0174cf3354a3dd9f0d2c3334f4ee5316c8b140cc. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM4TX2489363.
Love Changed Me - Frank Wiedemann & Toto Chiavetta Garage Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ec11694e088917596feeb5f7f8100a0bda8c53e32a52c0901e15a719ca1519. 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/ITTQF2100003.