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 0xe5de3df804f72d2389e28e4f3b85814bbd848238231727f619354a754d2eb886. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8810a499-00f5-4418-9b84-2a0369a73c0e.json and https://artists.proofprofile.net/proofs/artist/8810a499-00f5-4418-9b84-2a0369a73c0e.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 0xfe92dc37fa738dc64a17719a8f03c423b0fc83f6c2645a27de4717b10f2480ca. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:30:32Z), 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/TCACT1606480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507477a6b529cadeeec69c3e6872d78e5e39c796777cbcb78f75d92a46b4832e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAED1917430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee46ad274770c043d118fd8484bc540c98525b94f484f03f2a5a5fc9f5ac112c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:06:58Z), 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/TCAED1917448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4df8b3a808f589968a9381246354c9ad941c5d9ac129a4b8e29f0013a08d83. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAEJ1989617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d7f2853fc3acb9c717c21059e406f4ca5718997a3c4840e18d759ec9067f6f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCAEP1918046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5ea26ba5a24d6ce9504c0e7b0c7e4959d080ef74b210382ed07c19cbdd4832. 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/TCAEP1918058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d630442c102ef6193bac6b01ba5972047697adb82507160de83684d13065a79. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:28:56Z), 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/TCAEP1919782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1439d37ee81a8094a013fe600d6291473a017fe0c8454bd102c68d93d6c1d9c8. 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/TCAEY2019243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4074c9a2d9fdfb10c57f1cb91438c6ddf5345ad30f266f98baf0da1dcc2e7c72. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAFL2119059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda71a3e5d963b6cab77bdc3ebd5f2d1519ace4d38857b6c171e3f8db750d2192. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/TCAFL2119089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4dd906233f781ab118aceb457e4ca322b41669dbb2069e0982b22ed8190fa0. 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/TCAFL2119246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e340209a3e2b1f79b957679b2694703bd3efe1152edcb227ec2aa2dd0f8762f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAGE2231279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25f17166f6944b3aadf142e7a94da10a28e80dd322d748c13386bea374ad5d. 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/TCAGW2398343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6501578ee7ec507c6c9cc44c50e24b1c15395cadb6e0722d94007a178bca9de1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:08:31Z), 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/TCAGW2398394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c70cf0ad386a26a8247eefe593ab7c7706c53d115855df7e2e865c0fa2bd05. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAHC2313238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff38091e8f6b18e6c6ed319955a2c5a037dce3be4af3d12e3cd8878251fd6d9d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCAIB2477872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2055beacb9b7846d7f96cc220f9ddf1a1a826ec3dc87853c78acdd4c8fd2cb14. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:00:50Z), 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/TCAIO2472017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcf731e8cd077fef1ad546d1b0eed2658251994dd673c65c924c38782c92bb1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAIW2433974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e47f8e65389df022a824c5f5818fc6f5bfd74c900f6d17277a4c2a151b534a. 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/TCAIW2433815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e44235f0bb5302e904757519aab7860b6fb93b7ca529739204e328682a791b0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAIY2478658.