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 0x70b783cd2d3dff273eb81f94552cfb1d29e7a82cc828348b233bc791b1e07ae1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b0ea447-08ab-48e9-a2f9-07570e3b4dea.json and https://artists.proofprofile.net/proofs/artist/7b0ea447-08ab-48e9-a2f9-07570e3b4dea.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 0x03fbe7675e04e42e3a5e33e99857081c22487f8ffe2feac2cffdf7815bd896af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6M2281366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb31810a5d1892f1a8231fe9bdfefdad9472655efe75f293644848d848bf101f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZTB42385762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408eaab9688cfd098be6ec600568bb25deee0df333fe466c068c0e1b5973e617. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US3DF2475257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1f14eb8b16209bc2af6ca0836c13e9dc95332a92412912eab7bc9f63996864. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US3DF2482844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34b2d850e204003a3099fad24d63249934244d32ea9f51f36a977d6610fbca6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM3DF2405744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9802793e0113b597241368683d2997deba0c213cf269d82bd012f4f95add5b35. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA62539685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c524f8c64da64c813a1ed8dfef127664903e369d8f28a7f129d2c274460f8f. 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/QZDA62539686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b2a8cf4b58e05cdea5003bacf8ced1d90f7f0e950b35de02612ef45fac787a. 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/QZDA62539687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa18e6cfc7240cc64220f7820e497d02725a80a85f77605b431f49e6cc99fec. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:56Z), 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/QZDA62539689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bc64cf26de006fc9fee97c42b4055e517900e25d97ce78324d7a6aa12496c0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZDA62539690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43f9b5bd567184016f645e5ccdc1205e8e54d3fa7f2f1463515fa056cf8f1aa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA62539692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b3537f58b9912a537d92785d2227d97c08e8180851439403728e0140c898bc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA62539693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c08b5e8d4ad2cf2ec66a7f300cec72a258d3b38442725f44092a79415b549c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA62539695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d409b82acf97e23d1176d87a2d23ddfdc1c15d708576e351d2ebac53f8da96. 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/QZDA62539696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87920fd5d5fd2c94c4487fe952976b6aaf2b51324e52c0d2434923bb467339a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTB52542939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb559c3e3366d5fbd72f9cccdddd6f11cba0c04feb75f4b1bec7f00a396492f26. 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/QMANG2221500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8829ca224c1056b6c753db4fd70d8351aecc483d37c5fe261f3c2f7e9468ff. 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/QM3DF2251468.