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 0x6d66014cf8b0172ae49087b181ceed8fd12e5a259fbad06d0f1a92ce262d4836. 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/e89cce4c-1977-46bf-a9df-2c09206d40a1.json and https://artists.proofprofile.net/proofs/artist/e89cce4c-1977-46bf-a9df-2c09206d40a1.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 0xc3291d937abf67457633c9dcb2afd875a9a8289056c8218594d3b646f5b4947c. 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/IELLH1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b50a68b1356a828217084d981803500ec6492e4bf75c96a632901769553fa3. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR9W12001650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763e261a7b3e1f43079242b718d2481ab8e7039a948dce308318e98e96225c32. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W12334642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54125abc50435f913d79aebdb405bf556dc0587e4f1e3b37a851f2f48bbe0664. 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/FR9W12333843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763e261a7b3e1f43079242b718d2481ab8e7039a948dce308318e98e96225c32. 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/FR9W12334642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433807944993492e83fa985532ca4f19f48906436a493e5a64eb0178e0b1d37c. 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/FR9W12328207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edfbdd331e0f9e5b4d2d02f709fa85322b813577866221c516d49d7b1c508dc. 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/FR9W12334643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bf740fa86ec0d98b9254200db4ffc216da5c9b3e995ad70bc80ee5e5e5c615. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FR9W12334640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c634d39a915d35104c912684088324160b908b8c313236e9b4b39e499ad6eb. 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/FR9W12334641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b3b9676ed92c730ec35014816329382b11e3470e0bb2034455e2b09346f35c. 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/FR9W12334644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b36f3d06f8dd3e49cc0932cb972a8de2cbd1fd58bf330cc491eae751652fad. 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/FR9W12405124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b36f3d06f8dd3e49cc0932cb972a8de2cbd1fd58bf330cc491eae751652fad. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR9W12405124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58b07f5b09cf469ad09b72eb15a532804b7ee98ab3496626f42b92db9be976f. 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/FR9W11923152.
Straight from the Decks, Vol. 3 (Guts Finest Selection from His Famous DJ Sets)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9922a522937104874db67cc77c3623da975c1d06e7b01edd76319f6694b29dd6. 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/FR9W12221241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb1725fdc1063c14d75672fbc976bad5a465c0bc5f587a058d0c5ca944e9d70. 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/FR4EO1900117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310385dd9abaebda7dab8a2171acc825f22d01b4e02d30d71819bb24f7c97e75. 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/FR2R02300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938313ce618dba16e9b8ffa5bb9aa8d4737d2ba728565864ba689f0eca919acb. 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/IELLH1500005.