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 0xea6ecd740528556c06334e3375e64b53a99a2b08b756ea8bda5ffff113e6c39d. 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/866b3563-227d-4386-9b6f-ff658eaaf1d0.json and https://artists.proofprofile.net/proofs/artist/866b3563-227d-4386-9b6f-ff658eaaf1d0.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 0x9473deb79ee871aaf0f5395c1abfffda2bd7582456b47ea471cc06fa419c9bfd. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBKRT9328801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d074b22ff71e03099a1fa66304b03527e32cb6ed930107dc485da4f40baa9c8. 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/GBKRT9417704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab5cdb3f20ad48f757ad8a92bad0805c53e862b37ca04f9095f42b11bfbf139. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBKRT9417706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebffa9dc934efbdc8debff9eb5d86e340ea2e94d4929b9d094d18101ff4cf5f. 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/GBKRT9417708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d896be7867296cc1e5a3ab47c87738dd0347c9767c06438368fa7846a14f33f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:37:50Z), 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/GBKRT9417703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa327310580f5b6d5c16b2bd613c29ef2ba2c6f6e2cac021e76f5542ff23600fc. 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/GBKRT9417707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ab74475a5212c4ee77c64e66fae68996bb58bd5b68e5785a17744870416889. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:45Z), 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/GBKRT9948709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce31dc379b01d761dd84ae947ec94cf5f5770d9139141347056093c7e0a6d55. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBKRT9948702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57af63ddcc98ba7988f2a39f35052971a19b5df75e100b6400425e7ee9028e66. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GBKRT0049901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9472fda1f39d5a9e9a0df8c34393ea3fe3435bab90a593339a44efc2e74db932. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBKRT0049903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9119aaea99d11fa82d71be9e4ada971691e4f1d7205d1c2b8ab9340c6990fe. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBKRT0160007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26a9b1691edb8e20063b1633dd713e21ea9bcc2cd834695e567ef28b6c15a53. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBKRT0957003.
Saba Madine Agar Ho Jana, Vol. 2 - Islamic Naats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804bfe88f90bce905395f1255063db5f82ae95fb4e2d35fa6d2e6659bdb7114. 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/GBUQQ1680903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76d158fa1f39115bf5460f79751449181d9f1d97a4defed2d0b208ce3f2b933. 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/GBUQQ1680904.