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 0x68b1c6d59cb71e4c57dbeb624bc29973352fefd8449fb210d5aa63eb98e0b85b. 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/c614aa97-0906-48cb-a1bd-989d023311af.json and https://artists.proofprofile.net/proofs/artist/c614aa97-0906-48cb-a1bd-989d023311af.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 0x12358f518aa284d2f8eb1b22380a27ca2f6619adf1eb111c0ac7fc8d0fe6e062. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USUYG1108465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac71a55b3b74de5406e3a70887fb7d28dacd40bac94d3ac5b8d25d42678a1e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUYG1108466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372bcd5d159865865551b143813e7506f6a0dc63b683f1e424d9288ca703de35. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USUYG1108467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe843022698e7cfd63902c7b938005f065377d1a096966a18c1cd0cee810c2a76. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USUYG1108468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ee945ccea60291c97604368139b44d17beaa6705920a86def48e3759e1c5bd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USUYG1108469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a84a38b663b0b25a0eeffa3e3a7f9436d66861025185ac84c0e40d2ead33fa. 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/USUYG1108470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda99dc8e5026b1586c9ab1fe4681d4408bb60a28fd3bbd454a42db9cd218b10c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USUYG1108473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8780e437698990f3013affc66a6f8266f1ee001e993c8bb9429a6bc07eb40d52. 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/USUYG1108477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa585adcc8c8416d0c6c2649fe05973adeb3fee3f8310d8802673630d0f72d7d1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:34Z), 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/USUYG1108478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3503f8d500033e7717cb04516411ffc7e87335bb6541c5dedcdd8f610f2a3594. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S1839185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d8522f8a369d30f5e7ddd2d51c640f5613bd477b110756fa95082ab5df0800. 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/QM24S1839187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe640f48ecec175648e7e08003f1f92082ede12acf9510d8982c38a9fded22207. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM24S1839183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7017569a4067f9e5d276030ac588a017aa53ba26a4d56bc2aff1fff3e4cd38d2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:07:51Z), 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/QM24S1839186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd42cca0b24ce20ed5cf74365b1d4e5de5cfc9ae60f91012c1655ce2e4f234f8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM24S2007797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c3fa46c83c1c8c6d366ca7c56e8a3979b56aa4d4f9f1ddad01639594760d05. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:21:29Z), 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/CA5KR2174217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94893bba31b78ca7af0408f9c8d7caf7f460dbd5b03cddd0a790641c04fd526b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM4TW2442837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8146ec662e1496d5820ecf3de11f98e09e53a8f06da6c6dac6f78f1570c478a1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMFME2362209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cbfccb102cd657cdfd336abaf539e86b72b2e4b2bda33811510e55f046e02b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QM4TW2442898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3dd53fd79d8c72078f35fd28e2a5b9ed754ccd1bd31c38d15202fb53d0d403. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:32Z), 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/QM4TW2442899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa398d3e61bba5883f5ec0f61e927829b402e24f1cb11d871725f9f04e590591e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM4TW2442936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4502f022415c04a10778512d13a7e8d1b37c06cd5a2dacef9019c8ad0f8b22d6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM4TW2442939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d6d2fc3d64fff6be17cc6dfa7d2396319ca2110760201ec67e1f6e51641dc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:20:56Z), 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/QM4TW2442943.