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 0x6020347b33f50f0cd69c405592b792548bf24aa70858f33bced093db2230702d. 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/519299a9-380a-412e-9ecf-f699ac398bc0.json and https://artists.proofprofile.net/proofs/artist/519299a9-380a-412e-9ecf-f699ac398bc0.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 0xcd06a4da2f29a36c3ea8e0f6c73c730b6e917ac256aad358215057be550d9478. 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/FRX452083387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2498a0e3b77b02dc43dc444b9266e0eb271e4dbff156009665b126be0686eaa. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX452013024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80143275ad72b582f28d11735c904e9f968627bd8e650ac9658b67f62cbdf359. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TRBPR1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd982c307b6631646190d49b4ac6099b7ff059cc67062b65de2d379679634c5ac. 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/FR96X1988950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e6b9f2f02b7fa6276221cc4141eb948c6e394c6a7c55a1cbf3ebed071553ca. 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/FR96X1988952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb852a6b420da6b5fd9a15834a694afcf8f8ab674088db3d7a405b5ce0e62898. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/FR96X2187542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29edcc7bdca07f57ba67a9ad529af2744ee9133c47ce9b410cc6ce8e3382876. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX202209418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1fd64e65ec1c859985b360d1cee3c0a1d5df1dc41858b3171fdf2169ab536. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX202209402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721eda39102236a790b0c087c6b5a8c8484abcf94cd8960b2da15d2053d86382. 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/FRX202209374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af0d7c3716b146488f54ff6aaebc61a7b41f43fd1a4cdb8298e91c78810d13. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DGA082218517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d528e693fe3cddcbb8322b5e223e09b5d2b27914ed55ce435369585dcd8a655. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0R2412707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93a6e9f2325ad9aaf7dd2a06242f3ae188e1d7bcc4e2ba103ecb7d60cd9f905. 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/FR2X42584274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf177ffadcb7c340874084f98ebc9e63d9cb1e94a57e0884008108ffd0da2b131. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TRAEI1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b559f1c3f055f4d6bf3a4b3527b4908124affd533cde55f4627382bf0b31c2a. 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/TR3951400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefb3f7fdfc915e11f9e8d3854196ee3e14f3947532abf5567effc1251c41e91. 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/TR3951400008.