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 0xe99b752d0b663bdfbdab64eeab6ba2beeb4de8a9db3f9f12d4b1cd19075b8864. 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/ee8086ba-205f-4a4b-8aa8-3cd7e644e82c.json and https://artists.proofprofile.net/proofs/artist/ee8086ba-205f-4a4b-8aa8-3cd7e644e82c.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 0x2e1978a0ac5367eacb5614998008f55d8e4f1f0731735bd5805643f091d35b88. 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/QZHN72479576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cfc045fc05609dc4a7f3fb1971d2d3e635fcb9c6cedd7c832dcfab639f785f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN72479577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9586edb987dfe4628ff5037567cad3fa4376e3b7487d8fcb0316e32792fe2634. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN72479578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac2cf2f4096729dc36e909f2646456bec6e8c6267e3ba1cfa56806ba6c8ee03. 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/QZHN72479579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ad195fa8c1a011572cbc4bff121c7e58d77e29b28ca4161eee587a1eb17494. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN72479580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e8cab34c911366a3f3e9e81e3f95899e7a766a2c4e897cdb8ff837f951fd0f. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZHN72479581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a143078b08f106aafc91b30f528d42b10161ecf78f2ab0a98e3215567bf620. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/QZHN72479582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb89a035277a0c5f72c6f3e5d366640e6ef75bd0956475dd64aac3c4b073232e. 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/FR9W12149408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5773303ccbaf3c12267a16c9a60fdee6749b52c6dc00bc3e2ad7392999151b51. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W12149410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8765532fd15be38d2fa8c1d51378ae722fe6d6a1382edfcbc538b2de2e08573. 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/FR9W12140280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7926cfbd57b17caeb7a3f57767d7113af54692cbe370f72707b1ef0e2273810. 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/FR9W12149411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ea657e845c7d584b8c8ec6924d34b2e61ea9973b68a2cb361aa10dcfaca25a. 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/FR9W12145801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4704a5b242b448c0254517bac984ce7c0f9fea7f3a2291bcc90320523d8d345. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12209824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373e35abe98345cb7b67a260b603ceb9b6240afe7af3e95896c5a39d5d8fc236. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12209825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ed0cdbb3361f2acc46eb2802836d9b6fbdd59d72f28340c84ca8865e77727. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12209826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5773303ccbaf3c12267a16c9a60fdee6749b52c6dc00bc3e2ad7392999151b51. 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/FR9W12149410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc074a900be380d573de627301292f0208664551c22de0ba9c506586d350b075d. 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/FR9W12117176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f2132a4df7b4005e2c592b8c73aa11c872b3cec63b71df44dea95ba000ec5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12117177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc4446bcafbfc2be14af2d030921a0cc7340e0d9632b646ec1428aad0cb24f2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9W12117178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e117745bf7d739db96e6617a045ab6f2b6095a5422f28d01aaa87825add6b0b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:25:24Z), 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/FR9W12117179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ddd9b3b349029c61dab4b3eec0c28cd3e0e3894fcf027462550964b4129628. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:45:55Z), 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/FR9W12117180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13b182b45d77ab0b767a912c91f819896a39dfac360bcfff3b36ee5ef999d04. 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/FR9W12117181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922bacf0e4d12d87104a974f7e6fa54de8accae285a888f487c4183fbe2142f. 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/QZK6M2191169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54476351058f51679f4839d7c12b124db2bd8a5543844eb5428c841e6d29778. 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/FRIDO2010886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1af1b23bcccf5a5bcd46b431667d8e33bb5cf4ea68c1e2185ed1f83121b7bd. 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/FRIDO2010887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8aa612131d15088f5945a1d6cebfa479ea335ce82f039fd71edcaefb1f3aeb9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRIDO2010888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f410748402ad7c1eb488f4d0958e1963855c75caf7866af82f227835811d93e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRIDO2010889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20511506e336ac6f84e40ce5e29059b21fd42cf13ffa4ab12e871d6b984475. 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/FRIDO2010890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e82daee77ad544184d5d0717c5e7da067732e7c8fada349d82776880a7889be. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRIDO2010891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4628900eaaff06d9311870317697b0311636f53f9d9601e6de12e7680a064443. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRIDO2010864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1638f477ae74fa46c1995cd84b151e90c7716727e42ae001029e2291ae6598. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6H2165531.