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 0x3688860ae6acdb64a222de01d8d511ec652b803b78925c9cfd6d0a8543101a7c. 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/4455a50a-52c3-407a-a61d-6766c8efed66.json and https://artists.proofprofile.net/proofs/artist/4455a50a-52c3-407a-a61d-6766c8efed66.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 0x311b357ef233e7e62aa4b3a67a4024dadec21a525a9b8b4295e204649bac4a24. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZMEQ2481137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f908a2fefa3576726c9ee4f8cbc3d5d91af8a37af06f01a30c23a5837fe289b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMER2408261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778a1233899730a8a6d5903fc118f97395544da06e8f7a47defadd86ed762958. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/CA5KR2468029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a30369740d3f4cb3fb422bf5a036b76715aff78480c9863a2d5c1a1d3d670. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/CA5KR2468030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e98d5fcdc4bd3cdadb6b79d009ebb3eaee67becaa63053383207ed3b4f12f9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QM24S2404616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a65168d2a29ba60c9178c28a6dd7212a4caf5d7808bcfaf6190b113134f5076. 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/QM24S2405312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5234c56206b3cd461a0c0a8acec1cc3af7d51764e0d5955814300a9458d297f5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QM24S2405873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1723377c423188565e3709700144a6946ca84c98887bc23c4c6acc5f427db0. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:09Z), 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/QM24S2407077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf045b8988963d9405546b14e1c2f8160808f2ab62d829ea1e2e87e425e00f55. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:13:36Z), 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/QM24S2500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad0876ae59d008f0ad014d23a026f2477b8ffc6f7170494f9b64ea8de4969d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QM24S2500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138485c5c7364af688f66ae70f6d34a9a2a8a9893941978f675ed2d30213865c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM24S2500909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40260d014f60f0933931756d8145111b71ea0cb537a3000133f2e886c883252a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM24S2500908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2f7a8204b45300b5c780ac9f7106b3aeb7833741622026bca6f7d75c5bef8a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QM24S2500907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd21c134c5f840efa887a7ed5817d8f517e799616b6933bf30879b3e0ff893e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:47Z), 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/QZES62503440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6852404516b74401a5184cf255fc9ba3fd1966a864cdd99775dcd0387062f6be. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:44Z), 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/QZES62506530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d2573e42d5d7609eafeba891ea956e981350990ce7847d5aac974b79102c9e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:57Z), 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/QZES62506529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4ef365a94a7c3e22cf4abb44d4a70d66e5c5d81b419dde9e0da64fdaeaf5fa. 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/QZES62513753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fe3fb53a4fbbf9a21facb63c40a90564ef765f3cbbb0aac2e21e1f49e7b2a0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:51:07Z), 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/QZTAT2570122.