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 0xf474eed73dd6c3b46b8860eddd00fe6062a81216e2845df300b9c0550633fe1f. 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/f4a376ed-8ac3-4d4e-894d-377e6900ccef.json and https://artists.proofprofile.net/proofs/artist/f4a376ed-8ac3-4d4e-894d-377e6900ccef.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 0x208d9d2046a0e21028d51388213bdc81b6b2ebd135ac08f4be44b276c437e76e. 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/DEWG82200209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27224710efcd232a8050bd3edd730d95b066e8f37c74c970d2efa64e6ce2aecb. 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/DEWG81900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef9da6d158c361526219f30afd6611c0eac263554bdb402133dbefb60e8f47f. 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/DEWG81900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e6b7ee36530a450cd792992aef29f261b8fbafced1e8efcb36a1e2c0192f63. 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/DEWG81900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c44e49b2fe7e6bfc5d918e20906b416cbd8eef142905a44ba3792e4f9f9a6b5. 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/DEWG81900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc397bb147ce02fbfb1a6e9d5fbb9a2e9a3832d1bb4d536e3f6ac682dd40d08e2. 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/DEWG81800277.
D4TM (NeroArgento & The Silverblack Remix)
D4TM - NeroArgento & The Silverblack Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c40c80cc11b0e6d842b15914b34002a60266b109b45b981a9674b006c498110. 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/QZWDE2257278.
D4TM - NeroArgento & The Silverblack Remix - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516a6fae634c114d6552c4a1b788753dec1d0f2e0029ebfb6a883592f508dcce. 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/QZWDE2257283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d16b01a2aeae8ccfa4ea12e688e29fc814bfb932891d9e76618e58b5d0f71d1. 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/DEWG82200026.
The Silverblack DjSet - The Industrial Chapters