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 0x985a9d69699296b748c02a7556639e154450428db75e241b0d97e203f58c7efb. 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/9959ec67-e10a-4bc1-8a1b-6a255ad92e2a.json and https://artists.proofprofile.net/proofs/artist/9959ec67-e10a-4bc1-8a1b-6a255ad92e2a.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 0x9697c56636d4a211d90999f46215108811546bf1a835e699275dd4e5d2001955. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR2X42490097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9204aaa9ad98f9bb8329372786b66ad45f06936deacfc2fed72abef21acd65. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452405311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97593e0a86a0e14cadc09a53d982a4d78ae0936a64af9140ee02f9c38d2b9e9e. 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/FRX452405313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1b9770ef6fb0173b007ad72ce1891b7a5c8303a2206a3620c751ff46f2e120. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:26:46Z), 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/FRX452405314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792ec3b9c522a941aa410536f9e447acec38663ec63be34f1a0661fddf646dc0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:25Z), 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/FRX452405315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d536276b8c06ea84e87874dfcda6a4cd4350bcb3361a14ec01cfaa1c9ae925b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:23Z), 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/FRX452405316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5134bf2519142f24314b87c20bdc271ab91d633b98b6579d4e84525a4855049. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452460638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100cb09a84ac1e491002421260c3d604b108711e1ebd6885a0e42b3f575e67da. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:02:37Z), 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/FRX452460640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e12d53c6aae0983aa2d83ec2200435cc5b8d1fd9a5922e898efce2380aa1669. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRX452460642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e938646c0eb50b5f8585a1a63a556804f35128518359d6e022019375f3c2ea. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX452460644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd04c02dff8ac33ecfdee80fae525c19c83035fbe664226cfe216c8be71c420c. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/FRX452460650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b8a8c03c26ef9fd7f23846616d5da9f44569f8afc4e7a46bc6cbf0c11db5c0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452460652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a8faf54c32f696e54212e04c1ed5ff1ebed9edb8c0a36844b1afcc9fd5d46. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:49Z), 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/FRX452460654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d97e09f254c89d80e4484d156baf3a4e76957ec21ae7491c34db4826e793fb. 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/FRX452460656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd99c7a9ab6574bc95e5ac309a2adcabed082b1c27b2c23764fc7df0c733b0e1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:35Z), 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/FRX452460658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8604b00b369993182d131b54874742b04784610587fc7777fb296e63a8f829b0. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:24:23Z), 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/FRX452460660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f55c27a62bf1321f1a41b3292db682040992f0acf492593b1781ea94bcc382. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX452460662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757391b1cd87ca90eea70683f4b13815da0bfe50d4ad1654b2254a802366ce20. 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/DGA062434434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcf1fbe168f5c801c5d880008b5191492f83930fae3a7061c4166c092792149. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA062434435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8608174184a20dd9f8726344812062ca80f744f4c48444ed8a874b7450e4b7b7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:33:18Z), 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/DGA0M2425559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d678ead9752b0995d6db7ed34d1facd998617df02880101dfbcf5133bc7ff06. 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/DGA0L2463885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe769e1ff4e41f8fb3ae24bc710a69b05a8b649a0577f0fe8d37cd2e60efde81a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR59R2584931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd591be4955fd7908ded879ec16d4b00e31e74d8f4f43c238005a6fb36f625. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FRX452548695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dfce12b92ac5dc43140a433680784a0997bd2b370cf85a6c5b5f4cb15c6a69. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRX452548696.