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 0xe6a33215300792d412b76c9c1bd5eaf942f255632aed34e75fbd71efe99f522d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/436093dc-7c5d-43a9-a444-0730d96225ee.json and https://artists.proofprofile.net/proofs/artist/436093dc-7c5d-43a9-a444-0730d96225ee.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 0x5a5469fd23cf3825371ff7a7ae76d044a3f0f2aaf49c5bc74f9336fb57f35027. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES71960566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc10f40f6eb06890a42f8b4d947d6e2ce9cf154d6b3d8d5333514fefa2dfdc. 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/QZFYZ1934127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeaabcefe8a9a63752e843aae1d2ffd53ed4b3dad13bde8aa58abe805623c90. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:09Z), 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/QZFZ61999800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1006b9bcdd1259ffaaddf819fd53b96e7a444cddbd9daeaaec4e3f5f28f366. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:05:34Z), 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/QZK6L2005218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5469fd23cf3825371ff7a7ae76d044a3f0f2aaf49c5bc74f9336fb57f35027. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES71960566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb9768f9d0ffda69b70415cf14435d307ba96d43e019dac9f9aff4e0a2d8ea. 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/QZK6L2005220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a8020636005c094b2a4928f2b74aa61d52771c2b9f5bbc30b7e458e343a776. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6L2005221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeaabcefe8a9a63752e843aae1d2ffd53ed4b3dad13bde8aa58abe805623c90. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZFZ61999800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc88dd8209d28cdd683021fee6b10b44a15a7f1c3ea85e602d6a1bd25549d240. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6L2005222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432bed5cc0f011972ddb10dc1a48deffb5a0ba70fda1665b111bb3aa9cd3b8b. 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/QZK6L2005223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc10f40f6eb06890a42f8b4d947d6e2ce9cf154d6b3d8d5333514fefa2dfdc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFYZ1934127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a3ec831f728f64e75e9e61bfd051f45883c337816dc33b23091e1b7fe44541. 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/QZK6L2005224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6638a0c519e3b80b5929d0b59e3aacfc4593e038719d8a2c0a6abc39c5b6b250. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6L2005225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dc8c41a223e44a2bdfead034ec61a903d0404d7bd5be3c36151fa9d8d86dfe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ72156921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1964e3f6867b83da7c254c3db73f170e5a38d0a0d25cc2de9067a4b47fa31ec4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA42209945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770fed363606136a1fb052f8dee15e692fc38ac285592f815249dc2d2cabd58c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:14Z), 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/QZDA82240025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca5176726159f0d39ed0e7384ef2a43ce54d23554ba9b58d9a80471838c9355. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZQAY2380014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0227c072fdffe83c4a8652b18e098d9773d5c1075052f7d0965886dda418b76. 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/QZQAY2322538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7807a812c63ff945e98cff08e242d570bb6eaef81eb27fc8b7eb445ae6485ac9. 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/QZS7J2356272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a602a8d7b851977e33c3332d0d8f709836f16e17583922e7d5821e9327f71d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZS7J2349844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97b5570ccfc1a2b0311b6a95231bbf8bc5b26411276ed8f2884e79b17e34c01. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZS7J2318945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4067a77b0d842d38703b18d36c27660af782bb3bbf0ca5d2746b3f9b4bda5e75. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZS7J2367378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd3878662f60bc6273fd7412e95c89760a2cf0625597765949939b354d19fe0. 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/QZS7J2369293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50feae50d66cdad651b9b3304fba363d2f54ddf93ba463c00797aef31b632579. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTLA2461884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b8a3c5e4214db7a0491b22f2097194d600e491a9d821d0cbe5487971485090. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZSYP2407534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3fd0de4c73a4da95d625e028293c12afd0bd94e3571fbd5143de22e0a77a92. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:28Z), 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/QZTLA2442484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e7b20466bfa2297daf8985c701c07b77aa3e7b4d70c5c06d159bd1840a57dc. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZTLA2472585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5399b551405d1dfadeb21b1ecb64a1e7ec997e9a1ecc81300b2d86a2da0b62c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:56:53Z), 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/QZTLA2433618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9dc55690f4a120ecc468fec0dfa6cf148f6f42d8de16334b1f0179a3e85f27. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:06:51Z), 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/QZSYP2478921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb690edd9a35ac04199ab61174fa89803f5597302c46029cf2ee37b5ecee43b9d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZSYP2441884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17386473e8da798ab97ae7b2f42961ac71e2546310adb6cb7eadac1467fc03c9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTLA2468173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fb1801f7c3565c0580003ae05223ba27f45ed1b6bc3c229c7edceac03c8533. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZSYP2467771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ed7da3a103c374aa5e35e8acdc16e24e6e66ab82a5cf61cf58680ac9ce7482. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZSYP2415825.