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 0x8f39ee9ea727637cac7b1c2e909cf6fc01da152d814febcda64949770c2760fc. 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/5dc93dd1-4f5d-4237-91bc-b0154e29df76.json and https://artists.proofprofile.net/proofs/artist/5dc93dd1-4f5d-4237-91bc-b0154e29df76.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 0x4cdc75e76ea83ebe1fce498d561d8726589bf0c084cec6e93f9cd3ceda89b792. 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/GBUM70800266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089b24677b7b95eda0f23d08d77dda1351604713f0b7783fb8a04a946ece18b6. 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/GBUM70800274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669b9af36dd02a6422ee798f1a24809d2cb3be7d3a739a3efe95642328c2187a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:36Z), 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/GBUM70800276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc9917ed8c9a7111721562c00e79efea1b2ab3d505038153823c6e61da1958e. 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/GBUM70800269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104ceffdc19bcb6c7ebd678b0e9bac216010fb27699bfc3024db7267a0d7076. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBUM70800277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c50f9a6148e1f4ec7c0ffad5b553c9d8ff45dbee089f10c6afad7f6a73bc080. 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/GBUM70800268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7bd4e858a24cbfbe54a75910eb44d64d5b06b47ef5625cd8ac5981f765c0bb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBUM70800270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190526ebebc21789ae9ee6532eb2ce1829bc646f11a53e43de782d8efae178f1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:45:36Z), 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/GBUM70800271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3010a33ec12876a6edab39d9f3b99cceba800eff50a1e45871bcd416e06b4677. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:58:01Z), 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/GBUM70800267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7527fae6f89b91acc4314cc2e2402bb7b947e07380f88b3e48afc58810af5635. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:11:49Z), 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/GBUM70800273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf8963ef3d8fbcfe4685f6f371bed79f7b20f827957fa045d7ab027f5b42aff. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:28Z), 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/GBUM70800272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67982792abc7bb9082e314d64a77e5896de86011380a2e6e79a1f796e8b661c6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:43Z), 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/GBALB9400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18382af40c66e339cb7880fb91478719332f3bec4fa97b761417b5a5b45a05f5. 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/GBALB9400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acb16160f52d6adda9e316b2636c2f455e433097daefc87df50b742f319c43. 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/GBALB9400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf227129d8d4e343c6263bc2071eddb6d9c3795b8632c92507e67fca2453ce8a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBALB9400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43410a651a1e73a85380989d68fac3d53c00e062f117532af2f775f0fc353ec5. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:29Z), 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/GBALB9400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57484e178ad3e1187f40d72f4e6dfe205eaef71efc95a597b9b4938befed583. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBALB9400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf731a099c0f213593d83091ae1328b5acc80eeecee3bea1ea2c799abf13d6e60. 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/GBALB9400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38216f51936e8916f39e4f60a74bd2ec073da330c77cd40e0eb428708087dbfd. 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/GBALB9400009.