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 0xb02eb7486a0fdea275e57cf42769aec2327c3612f49d3d95e3fb825f89ccfbb4. 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/be0b5946-73de-466d-9cc8-1a840e04e7ba.json and https://artists.proofprofile.net/proofs/artist/be0b5946-73de-466d-9cc8-1a840e04e7ba.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 0x7ddac4c47f373d20c9af27f67cd5d15e4566726cc2c805f5f51d6f94fbe1b6fc. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:38:58Z), 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/QZ9Y21705991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52fa07564ab8c51fe673bf6d7bb6096f909cf03b98e623e95a468d96d124334. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:21:49Z), 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/USN682126201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb65d1348c6a25b6cfc824cf98ab6d9bbc08b7017edcef99623b2a3d385fad74. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:02:03Z), 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/USN682126202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd89f7fb1d49a117c1f289b02c37f042c8912330d8a69f12997fa0d928d21b0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USN682126204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe019a815d9c81fe7a2bb4f39c9ae4b542a91ea61f9f80491fa1fc5658b5b38d3. 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/USN682126205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b063e64016d4fa2d9469752382ca61a27fcec51a1eb6a1c335fad7b791501e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USN682126206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d9ced3150033ab5989b8802985fc575b319e26448ca59914c4817d73f4851c. 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/USN682126207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d32afb708095acca03a7e935e63b7bba0efebb20f9f609eb6c3e6f5cc98422. 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/USN682126208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3311907feb225f720220326320ad3b1f9c009d2a336b612e64f7e61c4771d217. 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/USN682126209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07237b38201225770461444b199a10553402b2d57a7f399d1971ec8b68a48ccf. 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/USN682126210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb382d51717f1836ba41d58e46bd60b4f9c4e57ce8e04d3e5956caa973f816142. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USN682126211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98fa04f4abbd8ad87a4cef34669c4f306f5b0b0ed89abc9866ca45dc0f6e057. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USN682331602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687558a3a5e3ede0162a3706de9ad2ad8348ac60f35abd52b6038374a954456f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USN682331603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0a130b08362b09b28c1a7f545cc69e3769a19c3a008bb257d9cad76cf34ddc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USN682331605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3082c93b57681f656112b3d9a96196fd824c36a25d9196bc3d6335babf4862bb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USN682331606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb003a39b287393564cf81252e92480563afd6e81bb76d426721ff3d6e4c91c99. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:56:49Z), 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/USN682331607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78038a37c0fd0372a3a43cc9115a2684b3bc7fcb7a44b05212729788203edc2. 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/USN682331608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881ef5b4977fffa9365a15e35cec212c48c5d5c44b6881e5971d297173ae4642. 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/USN682331609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ade6cc287b304af9a96df176f1c1b03c2cd1e4b5dc6d6341aa113e9dc0b2e73. 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/USN682331610.