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 0xbf03122e32a116b68cea49fa158034cc551a6437b1c72c04513b0bb6a5410f6b. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c63c5b9d-d7ef-4dbb-8b7a-ec61428c89bd.json and https://artists.proofprofile.net/proofs/artist/c63c5b9d-d7ef-4dbb-8b7a-ec61428c89bd.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 0x9017676f4f26688ca0c88556e1a9ce352f40f55e0fbbd0b2d7236fc8a690a2af. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:28Z), 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/USHM81432026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb53a00cca425555620349b26a5191f6f3149e6aaeb6785bc146f0e2ffb6b40. 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/USHM81432029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84a00b3a28196ac24f667a8414bce8c9535d6d26efef105e884398732df0cf5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:04:18Z), 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/USHM81432030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15891d587ea522aa7c6f07f1591671068b8f9f0242a223a82e181b7eb7ed656f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:40:32Z), 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/USHM81432031.
Remember Riding Into the Sunset (Take 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7594025514a73de865dd5fb4ae22055842d071c6e1d6ddfa8cd841e5202cef. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:22:42Z), 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/USHM81432033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1206622bc01d8d9054eefeb63b34a83f20e1afa877087bd6b331f52d674ef21c. 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/USHM81432034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9db02f4b47855f7532d0f5879f09c6b987c3bfbd9b45366a6e1c69896c8c40. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:05Z), 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/USHM81432035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51bf69b1e64d867e9be08db124d8f2bf7b26e47ae3ef2f64b743b451d1671fe. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:58Z), 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/USHM81432036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9fe15fafda5b5d918c13e1709df63b1b397b28aa80ff15e8f2b2fdc9f2cc2c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:30Z), 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/USHM81432038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72cd2fd2e42dc4d22c0fffc8cbe1e1a16ec101708c95e71e1929d8a8ad2143. 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/USHM81432039.
Remember Riding Into the Sunset (Take 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae005a8a31882f318a7d83e4bd0086330c6ce115a41910f5cb6fd8d196dc624. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHM81432040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6465ad8353e5ab833b5195b4624bf3d376df886c7e679cccb15fc3059f5795. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:44:30Z), 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/USL4R2203931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9811aa473ce5227857c8b7c283b08b0e541823e42e37c0fb3bfde37e7c703fcf. 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/USL4R2203932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23fbee001aa05deaf1dd6d42d45c1a7e72d7638b6a3d7d99191336274309875. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USL4R2203936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9981e4cb6b8ef7631de27bf501959ce4020a128cf44215250c4863398a704395. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:33:23Z), 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/USL4R2203937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ab1ad8faeb93d3cbd2d5c86f5144c4a69d681df3b5ad41b4698f2966d37d1. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:30:02Z), 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/USL4R2203938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bdc300d06d6e63751741d78729848711faabf663dc9b5f00ff4c1476633c96. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USL4R2203939.