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 0xfb40838987cd49bbb27c33de1b74025b0d68da527704d58a463db4adb8930511. 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/3f8800ef-cd03-4f74-8c5b-d2ae87cfb96e.json and https://artists.proofprofile.net/proofs/artist/3f8800ef-cd03-4f74-8c5b-d2ae87cfb96e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pagibig Ko'Y Pansinin (Stairway to Heaven Theme)
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 0x3665701d6ea512eeb8b6762a2e4de06e518118bb01876290e3c7f3c387220965. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:52Z), 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/PHV031014130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5290704de7e543883d44a0be94bf7a565c5d941577e3ca8d8f600bf6c9540a5c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:34:31Z), 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/PHP171000378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32153588a706b58f05742e585078a4c2a8ecd0773d9d86e7cd38fb44def06a7f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/PHP171000379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9db25048a0cb3c0dadb155e344d81de939576056b1cae9295eb36cfed2d647f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/PHP171000381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc147342e67d422135a0e358c3632217bae8055223f9fe0fd69cc4745d69444d7. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/PHC152100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1505440f37a95fc368e1745011212d79d43478934483c1242551fcda8b2d31cd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PHC152100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88d0c10e22e01e52fed159c5b5c3f16d6968aabf3ec28aa14de229179510815. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PHC152200650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa790e45b9fdd3ad472d0288626554cbaa88b046a15928286a47ec8fc1e22e20. 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/USYRC2400136.