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 0x943b27d040ab9cef88393434e5c57ef4e74e66bc5bbc3134739a8bd21184a3ed. 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/36b6698d-b493-488d-8b3a-862e5633e05f.json and https://artists.proofprofile.net/proofs/artist/36b6698d-b493-488d-8b3a-862e5633e05f.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 0x8d1b2e02029432dac3b33d580cf37c7c8afe021143f8a2a0ddb65145c91b3290. 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/USLZJ1535833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ab8c2e8b5d4f2c7a074c1d8ea2d0330e452b722c3a3c11bc4b55989d96f58. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USLZJ1535832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2409176793c0bde518fddcd1c689c531022de0cd6f07d37fe41e4e1dfdc7fc1c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEUM71700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c67aef861a31c7b1e090b083a05c4083cb6da469d888a8a040a7b463b1212. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCADD1700323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8106518a2075f521afcd5cdd05f56cca30acd18f91d56d71e33f916491a8799f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/NLS3R1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3601e542eb7f33a0f699989f1e081e7e3af3f8b66666e7d5c170246327c875d4. 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/CA5KR1923412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a67d500767ca733e818be12cd653f5d8eaf1a9a3b33c1e5eb3133cea3e93a4a. 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/CA5KR1916005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443c8b80734a6266f386538237fe1a9e2a4d2468341902d1a8fb56fdb8efeb2d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLF711710006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ba8708ecb891a4f64569bfc8a2d6c30d5b0262f54bb9afb6af0293b76e7411. 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/QZHN92201329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3573257043331ccbe318446ec9a506f292a03ed8b09740f9282a4a2cae02d314. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWW2075260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8089e5ad7b57e6f22af7590890ed8f610e0f7f9a87996e84e3dcc163502685. 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/QM24S2004596.
Cherry Lambo - Marky Style & Guy Gabriel Remix
Cherry Lambo (Marky Style & Guy Gabriel Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbd49b92f1d793bda18a3d66c0592c945148b1768f107145f5abec4f0c46001. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKPL1787811.
overwhelmed (feat. Mothica) - Marky Style remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b3196c26fabee3c45c1e2a1022503cf16fc8aef5e5f3d6f100f8fe54c0b144. 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/USAT22006122.
Instant Gratification - Marky Style & Guy Gabriel Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f7f2b80accb63fa35f945227a7e52a294434771a1f3dda349741300001d749. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DES231700231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8934091d53acb075ae070467bf57753c9034322f04fb629e8db8898a83ba2a. 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/GB2LD2410460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada9e6bc6a668e48f0fbfd257e6563670a98dd32651ccfc388ecd329de9a4c5f. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GB2LD2320320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada9e6bc6a668e48f0fbfd257e6563670a98dd32651ccfc388ecd329de9a4c5f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2LD2320320.