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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136e51c2c440eeb1a2c0c03751269217af12e8a37e70892c14259a03f8fb174d. 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/9f6816bc-a303-4d55-8391-5a31e322e44a.json and https://artists.proofprofile.net/proofs/artist/9f6816bc-a303-4d55-8391-5a31e322e44a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154399f2bb5b58817aa96455334cda1f6f950075ab4a9b7050c4043da187ded5. 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/QZK6F2350293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d53d54440feb72efd73dcd8664ffdeaf29af8a070a09b33b3c5141461d2eaf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTBC2425557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b28c9b9a6db4832e84d7308291f0cdde93175f7f9777fc209f4aa21deaeb3. 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/CA5KR2410138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbd3e1dc66b7c29c3ece4a60028686a11c34c3aee5c1eca4760325abd41528c. 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/CA5KR2329728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6718f5267c91ea80304ea5455e200d136d869d473ca9bf1f6a0088d2c18c427b. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/QZNWV2277287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b89b2329e3a6e9ee1d7888f9b52698ca048c55c579e183d777bfe209450c729. 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/CA5KR2271504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8abdcd1d0cce0aa3e28a3a0c581dc0513a6b3bad66d8c2c8d0581c72883983. 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/CA5KR2461395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b89b2329e3a6e9ee1d7888f9b52698ca048c55c579e183d777bfe209450c729. 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/CA5KR2271504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2ecd5b931ef6c66f5710cdbaf88aa2b296bda64ef0cc1b45915170b10d5d26. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2461396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6447771edff6bc5b671b9586a2db9f335054a4f6a93f9ef92f5f6c171332a3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2433710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48b28c9b9a6db4832e84d7308291f0cdde93175f7f9777fc209f4aa21deaeb3. 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/CA5KR2410138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf805177a47ce1af966f579ed44c1605f6623036b85a472fa3833a73db9311881. 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/CA5KR2289150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f2b1f136a540f6521d024d2eccf1dff6c2fd726f5e24ed6e875403a8db8610. 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/CA5KR2221020.
I'm A Jew and I'm Proud | Great Parade Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49388c70ca934a17b28ee6ea2c44d092225112c107bc77e67409eb3e3fdad059. 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/QZK6F2488451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf5d8d03a4c3b53704138a729df35a1e3efa9e6f3018b7e50cb01ffaa1822c9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWZ2473605.