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 0x3bbecee30c5020d8fb7f05de82e7688d10c0de77bf43e3adc88bde748729f338. 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/6b3be6ef-e796-4779-8dbe-8c9db5910872.json and https://artists.proofprofile.net/proofs/artist/6b3be6ef-e796-4779-8dbe-8c9db5910872.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 0x62ed8ebdf05b05a3c174550b490560ddfc8648adbbe0db7fdd8aa0e03bd204fd. 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/GBKQU2445684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7e3a34c29eef15f19e7d3ae21ad7256798607ffe8bf42d40f4a44f82aace6e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2445685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839096cbb1ca166520ccca3cc8e0e1a66968bfb1c8c431f2f28185675216a0fa. 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/GBKQU2445687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1d83b3acd5cedb51471ed37f1fe48dc7be602e726989fb41e8c602de80d405. 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/GBKQU2445688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dca81f99d3fa24696c64cda9b51f66617acfd13726f7382b2d79ded1e2f08b. 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/GBKQU2445689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fd80b7f06c292dcbe303d14c36e9c3f818cb21b49e4c7da4a9d8cd7e0b31ff. 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/GBKQU2445691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f2d5180e7c887003d12a4b844fe2c75c8b30c33e3e44d150ce3c6074db30c7. 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/GBKQU2445693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19b9b9b2f2415449675f18bbfc20c84c3a41d906ef9e481c9174a060e4a02d0. 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/GBKQU2445694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb07a3e94b79d667d272237d978667afcc7a44a7afc7ffc799f39d25a622af51. 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/GBKQU2445696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e66d20627da9dd1801270b115a20637792120897ca0ab340c50cab0f564e425. 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/GBKQU2445697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4159c5f22f2b02d1dc290b6197e316b083d04426c349544a0eae9a186fecbb58. 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/GBKQU2445698.
After Saturday Night - Monkey Safari Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe23e443dd34925a84ac3851e634bf8052ca4ef0bd13747fa91c65bc573de4c3. 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/ES5022302503.
After Saturday Night - Manoo Alternative Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfd4473aaa19d6c4a7feefb83d938eeb729e67fe763fdcf32a0c672bd4a4e11. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5022302505.
Vagabundo - Michel Cleis Symphonic Re-Shape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde87db796d1db8123780371e72f4f575d9875da174cf977e72c56200e60524b4. 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/ES5022302506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0c5365ccdfb7c190b69c6854b32c1e84b37bf80dca1cbbbfdadd4da5f31b56. 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/ES5022302507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ba671c6156268c3a3a7cc800fb4d73746d564f8332dbd689967a4ba6b67003. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:03:18Z), 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/ES5022302510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e8c9e98caa8d3186fcd1fcbb7989350e3f9668ffec070da9e8ed43e080949d. 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/ES5022302511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c38c8fa27148774f54d2fec3e5604ab038530dbfe9159ae5ae84ee22cac507. 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/ES5022302512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dd957468df757243f858be0abb1ff55fe9bd360030c98747b53ff0f306b4b0. 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/ES5022302514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510b8e5965b549bf193b98561e8b77aa93a529531feef29abd32ebc71951daef. 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/SE4MF2300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa960d5fef9e702dd00988290e48886668e7f3bb0eaca2f1cebfc953e2e8f95. 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/SE4MF2300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d8c7a7395356004bc24bbdebd3b209f3bd9a74accbcd6eb6470987c2c42971. 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/SE4MF2300576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1bc9c93d79100fe90ed486bf82ce2cbbc52ae5f072133b594d51572392edb2. 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/SE4MF2300579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9302d517c9c7837028bb913ff34c1cb1ad65f3457d3a3c372cd88b5d1b2feab4. 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/TR0392400888.
Deepest Desire (Incl. The Deepshakerz rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c0b0e70fe1d220407272a5344c8c753d245bfe956b9baf590b41b20ec1007d. 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/QMFME2236395.
Safe Amsterdam 2023 (Selected by The Deepshakerz)