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 0x6faa470eb464123ab0279123e192028c74999f3c72721d9b200840d32c344bc4. 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/8220d70b-ff54-4e10-9a26-0dbc216c58b2.json and https://artists.proofprofile.net/proofs/artist/8220d70b-ff54-4e10-9a26-0dbc216c58b2.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 0x0250dd886bbfbb11016f54537f65aa5252a0967ec4fe22c1674d6c5fbf1f6b0f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX5MX2557209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ed7bef444a47a303f7065279a88b15da52fc73dfd2950d02a2e246ae95dd2a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:36:53Z), 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/GX5MX2546821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb7f562dbd76d3620c6ac4251e46b6111ac43bb8ccdea759cfc8172c7dafdf6. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:33:37Z), 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/GX5MX2558358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4eddae5a0151e302288705ce9857837391c645437f3ddf7da5b451850750fc. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:59Z), 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/GX5MX2504614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eb015989259a63db17c216e84aacb4f94f9e83edd479ce30785f00155691c9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:56:51Z), 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/GX5MX2506559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404a33cee0f9e04e14b132a42609cfceeaf077dd19da9ff3cf6569096454c76e. 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/GX5MX2547168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b2d8114e5e39406a38b5317647ef5e9fa9e94873ee03ccd27ae1681a568a2d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GX5MX2591543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe830ba3310b8326f4cb6f456a45c10a525850cabe51d5d55bd2cfa49b4a9f080. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:27:20Z), 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/GX3HH2562342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65c6f6d20f834574c240c76f8db8d34d842239ad91c1e4a9cb22fc2d30bc369. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX3HH2545415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb055d54bb3f488123ac8aa741ae4bca53fc91998f8c897899d4c133709a90b46. 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/GX3HH2557589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67422f2773f00accc71065f43f2b241e46c8bf2b1be972865fc7b7eab748f549. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX3HH2547253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e744ae516e5b9df15c2e458e1de08f065b826eb6cc645f6723e817af935991. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GX3HH2579924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb746393efd63b43443d5750f3a31310f4863618f9be90f6bfc0e188eb55ff12a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GX3HH2584836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ceda778f9480e2496d282959756f1cf67284afa82b9ebe16760d7543f67dfe. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX3HH2521491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8185d1f492782171971daaf5dc82b57f921e0e8c091cb7d41fb99867a921277. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX3HH2512093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534eb0e618fb3a822c15e3438bd7ae97e9bd9a654dcec2a0b866bfd0adb50a56. 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/GX3HH2580394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07251c63727c65b2c2de7c011820e132840e3730c5d65f7ca6ea4f0c5e324f33. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX3HH2587995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5dede5c5ec9e76ddacab7eefa7ac5ce29a95edf3e0978dd4dc31f907ce6a74. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GX3HH2532150.