1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1398698f3b8b39556383b10f326bfb3517cdf5e25ee070c4b645fe9bcb3ef816. 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/5df45d31-3c85-4308-a165-91c60ca023bc.json and https://artists.proofprofile.net/proofs/artist/5df45d31-3c85-4308-a165-91c60ca023bc.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 → block OTSBitcoinBlock must exist at that height 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 0x3ea6d718507f2f57e7f58eb685de1c2ff54dc442e5a984dc87e59c0131488c55. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPA651904605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c5bac38e53089ea7ab2f066480bbe5c1ca955d67fbd6090034238ff17ba9a3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPA651904604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cacbcc7a16c672539a5e07c8a2835480f905554f677486b41776fa3068e26ac. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPA651904609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc91c7b9b99222cf577ceb35e41e7affd533f298a5dea90c64d8e5068f3bd31f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:00:05Z), 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/JPA651904635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e83b3747060c03e077dc49e627d8559694bb8829d233b2394dc48af4e80a4d. 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/JPA651904722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6466fc672f090b2614c0c4885dfb3dd403e1c55cf3a9236510e3cc92ef3051f9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPM2011196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cc5aced3180fef91924ff15183eaecb065c7fb0761dcdec1073eb78589c9e0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPM2011198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93d515f67070116a00f329eda84251678b84bcff7af9133553e564217f22a7. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/TCJPM2011200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0a7ef3e3ee41fe2019106376a8772584f3d1d89976e0533fa02fdf21ac0718. 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/TCJPM2011205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b48c893cc38192e96058727a966bd83dac89f819a41bf3cb33c54b48aab365. 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/TCJPO2153440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbc7786a7e6038704f61774bdae64a17587d50985223e27a15721e4400e81b7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPP2195903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755b563e997d9f62c0d8228a06821d0251cc47957b2c4ba2f1482f29163a7d22. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:17Z), 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/TCJPQ2109853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbcb3f6f7075c773439b0db2d40acd22ba8cd160b034195ec083c8986145320. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPT2227206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcab3bbb278dc4817d264aea74d0dc0803545356f44ac349abf4aa78b3dd309a. 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/JPA652306231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108c1cbae767d2f4bd78eede29b67d0f31a2d70d6da63e1082b533857021c560. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPA652205880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68537511f667f5e2d421e48ef82d647e155a426a2eb3b68d673f65469096a846. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPA652206046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf44dff24270d2c80df55fd0cb1f7b63eb66b6604841bb52d528fb9c5f92f0a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/JPA652306230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35444420df5c4cd047bd438d160f511020f8885ebc3f2aa8476f74c2283d4a1c. 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/TCJPV2300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4670c8484596fdad4da64983fc5fc45cbbb0f7923ccf60937783fdba2110996. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCJPV2361359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea45537c38303a40c18833db27f423d910c5e3a97e95d0f16f00eefed9e0e0b. 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/TCJPW2350961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46897e8b3833b2b387d02e2f992b3dc2096c843b6d10df6d1538bdadf382e964. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPX2346381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61126a2dbf9322df759f08baef7371ec4c923ff6ebe9e9a9b6ce28d9ca72b2bb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPY2360631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee399b1eff91ed354dbd58b6aa68588fc211b3317b85129cfdc8bd8a011100f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPY2498051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02735fee95d8409a475317a18ebfcc3f28ed5c34de3121374b3d7a9bcc0ff933. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:59:22Z), 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/TCJPA2448012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa350caf950fc34fd89da16768d4f7286b59d420edbe9bd10aa15a7f6c3c2663b. 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/JPPI02302450.