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 0x1cdc68a5e0fd4a531ce47419a7ee28be33a9e380b8f6430af1fd3a7ea468df59. 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/64a523a7-63e5-4807-8237-9ce0ddb95737.json and https://artists.proofprofile.net/proofs/artist/64a523a7-63e5-4807-8237-9ce0ddb95737.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 0xd2b1d1f31e3bd3304274f61c1be0585d1ca46e378f8122b3669f9d1c88d75845. 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/DELJ81923302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b896311bf391c64dffd7b8b3bde6554acf8beea93954b168f2cad13d44f3fa. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:08Z), 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/DELJ81923303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca6ce1a44d9de7af4435422baef7c3bfb91bbd8e31ac9dd2164a14676bd5a5f. 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/DELJ81923304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d408343f485c46301d62ecc9a476143092c8d2cd755f98bda2c8440f8a0a874. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:13Z), 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/DEZC62043555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ce2ebdc0afb129f59f3c2fdbe89beb4dcad8d082406294e72b2c16fd1007c3. 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/DEZC62043556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927020f599a2a0d21219c03c5e8a44df907914b88758e8845b6c28d8d3472711. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DEZC62043558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c3fec634c124a2d97d84fdbcd8be23f59b7700a1ece4ba6de9c8fb069aeea. 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/DEZC62043559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104ead97c17540373d13560269e9a0a207f85bbe79c59994ae7364d1459242a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEZC62043562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946e70ab6e766c7313ba6f7cec4c12fb486e3fe7d7441820621504317ed17e74. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZC62043565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9265881bf789e267c616eb9b3e6613d7955ecfe726cac08c38a1ba85a40666a1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:21:24Z), 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/DEZC62043567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432f5764001afe8d961f963d4cb84e2c6c6342c1c3fa24fe9d0a02d6b5c3d953. 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/DEZC62285278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca7c64c74a6861941c0c62b4059bb3763bc269a8a5ff3e7b891e0220095559. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/DEZC62285280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01821bebcec223bd5aa56dbf9dbe07730c4310c2bf1898cddfa76c8cfe4c701. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZC62285281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2685e6b3807d978a14c8c5f791a958a2d1ec8e1b4a4ad937609d674f59d78e68. 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/DEZC62285283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2851ab43048e27f4618c696014861fff4affdf15def95f05b8132fd0f66a0f8d. 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/DEZC62285289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02473a3e312ac06d9561eb60a2069fc732f32a98ba5a5811905cf70649d56e7. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/DEZC62435065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5e4c103d817481ccbc0c8a3936a507c4b0928ce2195b20558c68b8fa5ec4c5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEZC62435067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f33304bbc5330cb1089af32a9956bda97c42ff83104bbf86b9fae2598307678. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEZC62435070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc137bfdac387f7c24412aa46e45f1f4e8d361777bce840597a2694f0c6df557e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEZC62435071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dca1f488cb80176ec6614b88a18a88708fcd37e2cbfa61d844263feaf5cff3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:08:51Z), 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/DEZC62435072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f993e0fd872a4450b55d51ae554eeb91aebb8d245e8ab44507874b8c30dd72. 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/DEZC62435073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39077c38296422346bff818622974b620431898da16adfee6b07b9ebab4bd4f0. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEZC62435075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410b4b7ca009c4386ae084193ba0363b883b48043ba8a012c17e6e7c0ec0be5a. 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/DEZC62435076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1c98a862ab5444010674c6af0c6b734117cdd8e9a9e649f92c151f31038b90. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZC62435077.