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 0x38051d85db2cbf517b28247befdc00fd66818b30afaa4161b5224bed6100443a. 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/6c5ca314-9654-401e-b767-d3fd842ba952.json and https://artists.proofprofile.net/proofs/artist/6c5ca314-9654-401e-b767-d3fd842ba952.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 0xfb9fe14415c4aed1bb52f9971eaa74a7b2916a265d814d6589777694033ef233. 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/DECQ11650204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901cea5073772025d5334679dc6a7c53b75fcdea6c4b582f78a41eeedc6bfa8d. 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/DECQ11650212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c072a90c57f72bc62c5242be65b2061953bf0c9738eebc375b97ac2e9335ed. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DELJ81884328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bb99acf1d4ac3c75fd60d9dc56df1aa293b23ea2d1d3f296e74d9297b8a8ad. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DELJ81820570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6ae480981dec77955459188bd4c92015cfc6b0385a0bc0fb1a756bc837b32e. 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/DEZC62272808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87731a5b4ec71dc7549e90d42cde0a28ba0ab0ca8335d8f658609f7b85f1b1a7. 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/DEZC62272806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e86302a868c8295f0b5c43a596f4eda4b9bd0ef703b75808053826fd00b5367. 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/DEZC62272807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29d2381d39a5f94972581dfa086b4cb782da2c1fda4d73c610b074a8100bc35. 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/DEZC62272804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa471130cfe120aa9e106346b68792605c9920427ac0a2b12c499d93d9cb379. 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/DEZC62272805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87731a5b4ec71dc7549e90d42cde0a28ba0ab0ca8335d8f658609f7b85f1b1a7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEZC62272806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e86302a868c8295f0b5c43a596f4eda4b9bd0ef703b75808053826fd00b5367. 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/DEZC62272807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0bf7fb12b06d55d9f54589c73f0e61487e0399f2acc086ed71fb36b8af31cc. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEZC62272809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850506a25d15f80f334fc616febae29e575ced3346ec7b39eb05b2c6d802a5aa. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEZC62272810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bc2428b69320f0171dcae53462765c8f535ede6184968df16ebb69560902da. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEZC62272811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84a7d20628786a0f934bdc1a2a1f8be92aca46f971a3ac90d590606c6933507. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEZC62272812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d40408ee6c63775b3e34741de3e11fa53e9c8abb074318a4ac9280af69a2c95. 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/DEZC62272813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b916eae69eed82a20aa7cb2de7df32452d31b4ba33ae0ec1a6a0bfa392389e3. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEZC62272814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162eb048878a8590106fa21b1a098ff08dc743981fd90260622091d7ac16ae9d. 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/DETY62100059.
DJ Spliff presents – Fear of a Lebakas Planet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f548a93ad243405dacdb20fc945b2c75bf7b5c3e59172059b881e5a8c292d94. 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/DELJ82082655.