1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x927144f2398cdd3c7744dcc6f2880e318efb0d40138999507096c7daa6631a98. 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/d039b6c4-8543-4fd8-87a9-fe8ee3272a1b.json and https://artists.proofprofile.net/proofs/artist/d039b6c4-8543-4fd8-87a9-fe8ee3272a1b.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 → block OTSBitcoinBlock must exist at that height 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 0x2926fc0e7edb60c00d131307b232908c2931be4b9be08854b7efbb27c10107d5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:31Z), 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/CA5KR1808910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8552c1716d68e0204398fad7fa61e10b1ca40fb574db965863f397ab621300f9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CA5KR1808911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dc9141a9fc1b3b2e476204103875d1c362bd6a2c3a3db5c6581e3b74e74adb. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEKB71655090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d181881377b0223fff58a7b783e90657f6384eba74f5bd637ddbcb419caa33e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:29:09Z), 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/PL66V2201565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136a9a33f31e20e8eb8875be5df39e9fab29a44cb36c181c73998692989fd40e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PL66V2201566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b5b16567ad814d95259f4292b600cf6b545b99a669a3ef476a8cbd6998b085. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/PL66V2201567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86c71ec03be0d6e8c1368621dce71f03770491537b6d6136f92aead27d00935. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/PL66V2201572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb894617103ccc0789f2136383147c4c786cf4448bd90940b867dce9fc0c09ee0. 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/MXD941805668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d8b96e526a8b802d018332aa094fc5b6f7fb97247cb8b59027c4a9c428f895. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:37Z), 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/MXD941805670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18afb7ca2e0548713a064318303d4556e07a465d9e48b6936343122695839b7. 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/MXD941805680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f52e0fc290ad7fff47a7e7ecc6a899f29ff87ea898dc1d4b590af164ea3d93. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:47Z), 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/QZFZ22448968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63cdca062f0e7f55ee018cbb69371ca6dd81a0b3875b48e9eb7652cb8b83e37. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ22448971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301d51836a3b751a5edde52b8fa7dec3feb0462dc6364370f6e02fd8f3c6b3b1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:19Z), 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/QZFZ22448973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf9c41051fa762d6afe865af4022e50fe07d97468c33439a26cfe5119d0cc28. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ22448974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec9b6fb3ed836c7944b526d4302afcd6dd679324b5444aeeb19a8dc4107301d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ22448975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7ced8725905afd16c172083009b3f83dfb8838b8b9265ecde52aed74a8430d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX1523551.