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 0x76f1e489f06ace0ad7de74c9120d76fb3f016cc7ca01b72bb69f94b28cd961a1. 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/e4081c68-9286-4698-bfda-350e38321a1f.json and https://artists.proofprofile.net/proofs/artist/e4081c68-9286-4698-bfda-350e38321a1f.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 0x185e90a3f3b2b38d770ab5bf7f3c2bdc43edad7e67f4e4083e3132e8a293d1bc. 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/PLL141400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f867a5d4206fef41fba17f7550fc38e95f5b1c3ee4688f45ec62b29797bde7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLL141400079.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59f0e4afff5865e0b992772e3ed91ca0bded3f4130d1143e9590e116aef186a. 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/PLL141400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd88b50b9b9e6a942368aa83fbbd2ee4c5835a89c585934d30115c5df9e45b9. 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/PLL141400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e11af33715912dc1dc426cc5b076c3b71ed352122dcf9dbb99a90d32bf59e4. 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/PLL141400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d6c18b573281cb477cf9fea048e7fe19d4098a2b0a57a2a0a4f2238b397eb. 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/PLL141400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1643a43f9f0824d52374f6e21123d3b33690de510c3982a3cc2e5f01ab32d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLUM71900177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf865dddd9af3269d8c4de8944424ae642614f43a9f1e0b3f4bef9d462dffda51. 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/PLB382200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889fcbfbdc28e12b09fb72a7f8400242ae29ec04354a82e3b9a1a1128c0ea70. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLF242514394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a39c80a26e227956476e974c03e46bdc9581f606353f8bd1bff700886761b2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:01:52Z), 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/PLF242514851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd913982104ac1f182e6a16260edee5d62aea30a4da502c4c5b1bd6d7698572fe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLF242514854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22a95d427c748ab7dbad00d52ff52ced3a67e160e83b511ebe80434a0cd28cb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLF242514855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9712e6c099672d3c3c1c97b2b8243d2f90d873b5118fe2b81601aecf61daeea9. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/PLF242514489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed04f38fc934d3db023de02653f07658123ef43a6f2d1b1733c1506b84887b6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:47Z), 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/PLF242514450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71805b7c2d4ecab3bbbcbec00cf6a1fc72c268874948125990dd9696edd73ac8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLF242514858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e07bbe65b3632fd24130fb441a68a12a4432022b127320cd9f425a498edc4fa. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/PLF242514591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa6a298ae23d2af6fb4f574b8a8a7dc3face905a1b07e46c8fb9305095ee14f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/PLF242514859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96cb3afa21b50f772223ac7eddb0a5c9dd2a75680db711b4ec088395fa0584b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLF242514861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5667c28cff30b63c3ea0d912eb849c49136ee03a84b2d0366d87389a55b073d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/PLF242514862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a42e9788eee201af760b41ca0ffb2cd486e294a9bfa3a5b645e18a2393ea67. 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/PLF242514863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8d40f9e4d760482b8404f11ff609981106323d1b3ffa13e9baf1a16a892ae. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PLF242211267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5d7e068ff05a8bfb8964e7060cb5259581dd15e0399f87d20708a5ed6afbde. 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/PL14O2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f384cffc9f33f553a8a4a4561e245e07a81f5aaa03639e507f747f93a0bdb6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES72035391.