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 0x8c92750f9d8126709383908c9d15a7483971f35054b56c682ce84e904587bbdb. 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/0e6f4c10-b8e7-4cb7-b6ae-6284b815a669.json and https://artists.proofprofile.net/proofs/artist/0e6f4c10-b8e7-4cb7-b6ae-6284b815a669.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 0xa1f3cd17e29446c3880aa6b76655bb34661a4d0735923b6958ca8357ec1afca0. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/IDZ771801724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25c3a433bec8d02b1bfcd1c5cc468f61a02b223ace6fb298e1ea736ece5ea4e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0R2324777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d07a15fbfe630caf3ad1fa9e911c581e25da283862cebc0aedc61d90586fa4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDZ771801909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8a9591d36230b356e16fc0366b77c71f228256cd6a474727893b55371cafb2. 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/IDZ771801920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538594732d700c8bdbf7be1701f27d696b02df75966ef71a3f222ad222190d1f. 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/FR10S2402646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49bf1981866e6d80dd0c1afa56db87598bde29295535dd9f832ce4cd4312544. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/IDZ771801965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00725e941c8779d9bd22a2ece53bec8ffbe075f28d126549d28e8b011a22803e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USA2P2416834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33b8a2f3e25e9b113863cac802ce6930b25b0af63413b28a2245b8c535287a1. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/FRX282416464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae985e160925ecbb7738fe1eb7b56a1e440d8e2643befcdc8d6c1224e4d2897. 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/IDA401806069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c0a12f00e34c58d6aca0e28470bcd22df71d6104101b2def82c3b9cf91e5ad. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/IDA401806064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf268a4a246cfa87a51d67eb8ea5bf1826055456c835f0a57e93c9aee850f5f17. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/IDA422400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b55d5ce018b03fff3e14af2c85949f464be8a1fad365eafa17a7428ac691e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IDZ771802082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec97a88c681bf17e9825cb19d5e8ed22972a709315a16bc5e70d0b732d2076ee. 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/FRX282564299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb79e326f1d83bc7a55a4a5ad5186825d5605daca846294d6c05bc2613d9a145. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:35Z), 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/FRX762575910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8104ea9c72e3834108115f1d3af18a24a54ce334ab7a26aec2e88dd33a981735. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX872587791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ef3684bce3b5fbab0479f47c10ea2e4e0075ac6689c9ae83e01c7d42adb3cf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DGA052574255.