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 0x500bd7df82db27fd2224ad8bc2a84c17e23e06f6364181e5d9a307d6c9deade1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac8525dc-14b8-49fd-8458-87bb6c789bf0.json and https://artists.proofprofile.net/proofs/artist/ac8525dc-14b8-49fd-8458-87bb6c789bf0.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 0x80629a60e4905fb17d9230858ca3a3a5af21031cfe22fdef6fc75d8867c21998. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0M2325681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426fb0b9ae8796dc8f4d85eea8c923c35d7994c4c17199f5af914beecf80b799. 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/DGA0M2377831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb09e76690e939a7905080e641996d445fc9241cb3ddacb880a1655ee47003e3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BE8LH2300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6899e2eeccc55ab189d5396b0055c1e3ac7eec6c5523de0b45211327e4b8002a. 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/NLT2H2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc8070aecb65c8e74a7f5dd2d80197218345934da01b2a7d8fa6c92a85f5daf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22228342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace754b4b94a94e735f2cd5d69b97365a847da3a920ba7557311638cbf1b3f83. 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/QMFME2133521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d572b1c4b39a9d5f0dfbc375057bbb3f6713d49fee1fcb659abb453722e3a8. 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/NLT2H2100427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae7f26f9c1677e25d1100a87d39fb9314ad998dd407a3162f68f2434ae5fcf2. 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/NLT2H2000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f431f984b95b2317cd857b3709a6013fb5d92c04bda81b00fc5eb8fd75db6dc. 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/QZFYZ2098731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaced9a12b430c84e3d0563f817ea5dc0921822cbfb6543767ccda4e00f68576e. 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/GBSMU7555745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a33492f8cb276018b4ea4eccb8c2d3c8dd6afe3eba2ff495cd95ea363403de. 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/GBSMU6814012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848ad906c5ad05fdc44d6617eb6b5078ff720d658342f18e2b97e3273f92f5fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BE8LH2400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f7251843552e726e2de2ea00151663689688ee27d149a2ec8113459a2a044. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BE8LH2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fecc873c3c3dffcf3572bf01ede3970164b6c841f728ec781cb85b8aa8d9fa. 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/CAN112402273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848ad906c5ad05fdc44d6617eb6b5078ff720d658342f18e2b97e3273f92f5fc. 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/BE8LH2400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe640087dd59f063f5c81e781f7ad92d20153dc006dbbb1481f966e1e68f9dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BE8LH2400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fecc873c3c3dffcf3572bf01ede3970164b6c841f728ec781cb85b8aa8d9fa. 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/CAN112402273.