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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff29b7d83be351aa053ba6be99860adc31e261bf5707acfde5d6e592d13c4f. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63190aaa-b715-4697-b72e-fdf0d13ff5b8.json and https://artists.proofprofile.net/proofs/artist/63190aaa-b715-4697-b72e-fdf0d13ff5b8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaeacbd68e34fff92eae0ef25f9ebdce56635af7db9069dec8d22ec14ee3ce8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA2B1801929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6208e16effb1d237ce3f7ef4b76ae18a823073a8773782051725a12b06c837. 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/QM6N22339247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a4a325cc210b97dde06aaa092a9e3a0e01c3df6f6ee8fdf761e2cbd382a8c1. 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/QM6N22339250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed87b9d095d9c75f042b4f21caf811a996d641a4a37b86c11f577b46033cf90. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM6N22339253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e19a63ea02f8b3ac105c628f3bf15ebd45e2d26bf12448389056d1d4774516. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QM6N22339248.
Final Fantasy (Juice Jackal Remix) [feat. Harmony]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49467e6b7501eb86d8a658509850893f817589c7e41f4659a8e5505833c62467. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM24S2306425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b0059e9e7895fe65c35e5b103c408311cabfe19dbf7a494fc8405841f5342. 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/GBKPL2211256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d07abc15beee7a876c6263cf948cd8a3f0e5b636d7c940c3077ed39f82ddcf. 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/USA2B1801928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0976c3e181ea22d35dad2f76e6999bb1619794172c3acc8cf8693201a1817d6a. 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/USA2B1704766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f4994528ad703a353fd2bdfb67202e2f972e1f23d71fac874064d2bd998d31. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2B1704739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f329d8f8edf2a4add1b12d00d67eab480fffde47631b1597f9b171d631a0564. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZTAS2324018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0445dd731aab7704f21ddab3342344c6fa0fb2bc45222a166cb2c7a935fb489a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2324019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68259103ec69905ff5825d1fce44cb9cfacf9fe8017f637d22648e376daeb70d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZTAS2324020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e6fd1c9463a4e6000a1a22d3480f616d16dde79b05c0e18dc786a329f609b3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZTAS2324021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc3690fb42ed7351c812398f2ec0de62f08e88ae6ce41c212c7a90921cbc8bc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZTAS2324022.
A Light that Surrounds (Jasper's Song III)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa757a9bc00bd02f320bd7a115940f68159143f4563ef5630d6fec42a24be5b0a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZTAS2324023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3619eec1c5393ed983adda322a8365527b481998bdf3706878a4b6dc81973fd7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2324024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d603ebfc22dd8abb65d02c3c19380d9741d4b80a163db2362e9eab7a9073e5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2324025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61086e18943061077f509edfe4adc96407518ba9996b72d93bff95a7e003d0ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2324026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd523eb32258f1227b19bea7e983d20a8bb46d652edf158c354ac14fb3b5a436. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAS2324027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033948e3551d9804b1719b652d1ea1ff3842754177772fd2b7e308da2fb90b5b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZTAS2324028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d94c9ce3e2a381a9b6c4464089cc6fec5bcf19863353404f0c709b598d4943c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZTAS2324029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617a3462c7aa32fd5d66c92f0f991f6ebc050acb2b997e6aad8d23e404b1a75. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZTAS2324030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c1e8477c7532ec09fb4368e5a6f8dd6f5e0e69009d7fbaaaee705a8347b549. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZTAS2324031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf2e60b3b3f416a6f011515c071d5ff7fa2a38e00dd9208c08cbb2b8f444ffe. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZMEN2119917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a71f093a5e10a14561a6eeebd94dd7eeb3e29009f99a93d075717ffe8bc68b0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMEN2119918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a9bc06753ce266cc48722b846c47ad902af4c543a562944575a6f1136bf446. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZMEN2119919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e328b4e2564b040a2b17091fb501453c19bfd877bbb6ccb2487f01e2540ec. 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/QZMEN2119920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b51f555e05faf5e4bae9a01842b894f38abeabe22714b678cb5fd0882929cef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2B1901128.