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 0x66f2943bb866814036a805a4bd109c25f7f405e82215dba41bfd55f033c394a4. 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/a1058a7f-27b8-412b-8ea0-13c0b178e703.json and https://artists.proofprofile.net/proofs/artist/a1058a7f-27b8-412b-8ea0-13c0b178e703.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 0x3cb2780c0f2a8848087711144c1e5eb1a0e669769138ef96d505d3f1d3ce41d9. 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/RUA1D1816820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aaf79496346e1625dbd97d214f7e257c786663ef648d1fdae437f621ebb28f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:05:21Z), 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/RUA1D1816822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bf53f545c617aa051569542592a38e4d78b9bdd17d2a5369b366c9aec5c29f. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:05Z), 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/FRX201934670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da1e9ef6c7ff77997c0badd31be20825dbb777c6abc874aa50bedf9719282de. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX201934671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e75dd3a6ae3ab665b665370a70350937fb67aa75f010b3ae7cca4efaef125d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FRX201934673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eca991cb9ed20927b1356f27a9886b5b3bfe3439a30863482076f2760170228. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FRX201934674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a34694272d825aca02d9f4549b0d231ea159533ed4f0f0cbe8fc7d46e4fa336. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRX201934678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3f44d81f2deb9594a024929a5c1c8a7c9065d2cdb1f05cc57fb228745f3691. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FRX201934667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180155dba39d8a129e3913645ee3c1e4e19b456ec18b03d93c8575b04054bead. 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/FRX201934668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93469b5837abdf60536ee7931a4b91fed7c274a954fb3fc3add0ad8be6da39b5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FRX201934669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34093173a3b549e7f8f671e62fac6ff2d8153d38191f415d989f9f1ad13c871. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX201934672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01f29507d092f115c4b73e6de4276090e26c3ce92a609561d33a84c22b19242. 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/FRX201934676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676ff5a4dc4c6c8d0617c465f5106db55135577005f00d18f42bb380a4c5d093. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:10:55Z), 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/UKEX32014530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f2d3b987e09743c3b3fbc2e2fc560d0b63a451c7d362cfae789acb5c9974ec. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUA1D2067696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37848bf95b7be0e97a99d21e3a67d18a19fde0027997dd494d066736679ef6d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA1D2067698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa035c950208f774161964cc0711301ee809c8e610e31b78806dd37363db16fd3. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/RUA1D2067699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f7fe9471dde5c1f66b1b0bbe3e90e6241c4455b009aae907f7820996d9f56. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUA1D2067700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57929ce10c80b1dcdeb87b0202af47f7beb35130e791f472e96e80e8e88aa3d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUA1D2067701.