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 0x79ee80f05205de57d635220d9e1fe4e8139110e53dbf9d01d18fb96cd0cf47b4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acc2fb42-0565-4c30-920f-391e771093ee.json and https://artists.proofprofile.net/proofs/artist/acc2fb42-0565-4c30-920f-391e771093ee.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 0xad0625111aba7cdd52b7c7dffc742f9f3ce29f51484f44f2f592891fdc1a1d88. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBLFP1787840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343bcadd1942124fd3273d90e2912e1029ecd609583067f3bd9efae71955c264. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBLFP1891077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cbe8328f679c6cbfecff1ff5aa4feda4f24df96d7f03231875642c214e06d8. 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/GBLFP1891088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0204e03c37059f29abb989b379d65ef048475536b3c7dd0627d314f32fbe1218. 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/GBLFP1891102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25d503046b61c5bb800ec8680913707f6bbdde38b54bde54f745a1287386c9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBLFP1891105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc697d7e42089628cd458f9faa9b6c18af9395b4a217d131e88a0a17a58d9eccc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:21:20Z), 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/PYC942000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3edf19cf799631b127fbb402303cc1e22b9e58d1b2a342f3717a2e22287e29. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PYC942100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601c9dd6586fb2c669d9342f9371bdb2123a31eeb6a4efa9872b2caca11a321e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PYC942100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54324a513e9fee73195e7a56ae29961c5cafd8f7d6c9d25bf87f1642aa13302. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PYC942100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045a0fb90070f4322b583db179067a35829210ad5c9b6e4d7c2f1ba0051727e. 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/PYC842201028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17598af997cf005f94955697abec9c96cba96a16991ab26b96ace9a53c0b9b7. 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/QM6P42304804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76ed32c3529257f8b8608bf2c01ae1f712771ce30f4ed250c43a3fd4c70259. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFME2377772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aaa7bc2ab9fdb451cad380aa26dc8d32eba374cfd3e7dbb84c911a06446026. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMDA72483448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7aacd9321bf85f8c1c2e739d5057ddfd0f52cdd0ebb30eef5a1e641d304c23. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMDA72483446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b36c1dc3249f7afc8026542d3f72b4ff79ed823989fc04fa19440f0f2e7fd1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:09Z), 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/QMDA72483449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43976ddefe067310f3c9c890f3ddbd590562cb9b230c2247e689baef08e0a8d6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:46:43Z), 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/QMDA72483450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882ba9b50f5d55af655a3e8af555565f54f2ec09f06b39e7eb2758a1ec3bdd1a. 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/QMDA72483451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa1c9f8888e24332f4dd7b7b169df837985b4875e9c55d49876798d1f2a860d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMDA72483452.