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 0x8e67b8f132d1b874b57ea0295fa1deed5ca70c3327cf244d9b0dd58970515eec. 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/83c6ab1e-2889-4700-8042-206b2bff23b9.json and https://artists.proofprofile.net/proofs/artist/83c6ab1e-2889-4700-8042-206b2bff23b9.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 0xe88aff9f698ec0fd367e4941804f3e122abada6246b56e79c99c4d5c192b8741. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BER680800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5956f627cd8e7b8d9dda8830d4907cd449ebcb2d09b6a494f2e61eeb0b488d15. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BER680800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1762e4c45e0c8c0050eff28b83e1a4f10bb8732daac59db31cc46dc3919ea6da. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BER680800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3450e294f78cfa598496973856ce1e84a546354654c84b5296417495a525c68. 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/BER680800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed17f9169223015ecdb16feceb53a2172bfca91bc1d72667fdae81a524545ed. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:01Z), 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/BER680800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f091bb3043b856c82034f391638314ad7f0e835db5fd91339fa8b554de8153. 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/BER680800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc52dd83c58c718ae9fc890951f9b1545b41b250a75d55af118e1fd41c80c8b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BER680800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9159c581d7c2f61878b2afe80fa0ed981b821eabcf12e9cfa0f711d16096e3a3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BER680800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f57e2b487ec73d7d93325aa519d065e7e47d8d335a642e552086624a11378ea. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BER680800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946330180e7d37c1cded62b672e3094d3ef68dd42a8fe30411e90b8fdb03d99c. 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/BER680800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33418ea597747ad959c690f06562e5dd8aba093479d613aa75a97686b9ffc6. 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/BER680800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd2df1be4a36cb3576beb308cdf8f14cf6b6afb57cde837774636012a89fe7e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BER680800104.
Vinde Gij Mijn Gat (Niet Te Dik in Deze Rok)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430e92f51209a35e414e501cd50efb4cea0449c128c210fc717d49edc9eba7f3. 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/BER680800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0caada3d7b810d9ee280230f3a22638e7b75888cbf926e98d0622235b814485. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:25Z), 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/BER681100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d70df9d4a88b303d8dd6303696efced252d6235c9d2e5fbf28878235ec1ec5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BER681100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18c28885841ed5a95f067d3c29aee7344c4c456e574262a9f30ded8547605c. 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/BER681100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf15c216717a74ccd875a377e7375f7da620aaabc76eac5337625eeb48ba064. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:34Z), 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/BER681100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefdc5b42d9593bdbff9dea581ab59df607983fe554383218c5def081f1b58bd. 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/BER681100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2a2397fdb0ae2237675ee9e7514ac7f7e8b6cb45a4478c464262d5b10cf9dd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:45:52Z), 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/BER682201001.