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 0x4f7be7cf9052286d4c5e7bcf03082ea8fc14dab1112e85b5374fb112adde4ecc. 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/683f3459-dded-4122-a1a1-3172b67798e7.json and https://artists.proofprofile.net/proofs/artist/683f3459-dded-4122-a1a1-3172b67798e7.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 0x19e3e2248f1a07c1643fd567f84120cbab8d88102af436438c3b58d1c6b1eb04. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBMJG2220765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763ddb312a34514a9416c27f349200c81a2aaa1302bc199b8ebef628de9e3614. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMJG2220766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531a489fbdd32c8abfa993f0026aaffa0b5b8f1601281faa793c19a90f6bf487. 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/GBMJG2305290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48644cbb7c0cb5169369fd95611cc5c9800998edd7b7bb217b6764430330c205. 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/GBMJG2308418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0fca9e8b208ab5af2f4e80729c995fa6a59c64bbfe38a51e1952b9eda87f7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG2331537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453ba1ec589d8f11f15875df42220abb280b1a50bc9bf05e2694d44378556185. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMJG2331538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b103b978171d9aeb6fd8bf31d964ac25b2e3cfb552c6dc90ed63b4d3b92d8bb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMJG2331539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7786c1863e7379b12d644c26feba2c305a3ea38735da0cbb70c658dce7db01b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMJG2331540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4167c74a3174aaa405788e9e56e6de1f5e91c3f20625ef3062c4190517783191. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMJG2331541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342637da11579b2a061face07df09691ed384fe639657ba55539831cd3c1d9ba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2331542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801f4feb82341f8d694c8af3138f62a3367e843b481887e9b3f4c4a3f518077. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMJG2331543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dd575ca3edb64d5f5be79e0bd0662551da0467bad2bc7b7cbee0ed3f45cd58. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2331544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48644cbb7c0cb5169369fd95611cc5c9800998edd7b7bb217b6764430330c205. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG2308418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8335581e72f00fda9a21f46e4e46700dbac9f74b043b6ae80b4d30e635cf1591. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBMJG2331545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914ffebae37ce02279118a3d5b75b1707742df3324fc445a31f0baae26d6b298. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMJG2323450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95d387f411bb6ea440e6d0fdcf4aa41e5eb2590ba0fb8726d826027a500da28. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG2331546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58ab0f4e377b3e956ca7a9e1f5b319a3f5cbffe7cd2dc54835b964841976dfb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG2331547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04119531aa05d6f4ef7f70d5a0baa8ce645cc3ca452b0575efc3b570aeea0b19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMJG2331548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788c49c74afa2ec21538042a22982f60653fe9d42be89f41dc1a307f2b37b1e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMJG2331549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd11eb530c4bf2de1d71e89dbf71bc134b71548557b7eb6e2fdd4d26f54bf8d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGH2413201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad50f44e887fb04cdad342aec4c757031ef4b5aba5db9f44c2e4e709af20307. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMJG2300363.