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 0x2c115c93dc3770455fb1ca79f430eb4e232369ea0047ceacf692a4d13bcc6ad2. 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/240f99ac-9ca1-404b-94bf-8b89a2287c15.json and https://artists.proofprofile.net/proofs/artist/240f99ac-9ca1-404b-94bf-8b89a2287c15.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 0x26b8bd5a516304e06b85494bdfb33a501cdf14c01e5820940a621474df457f10. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFL2350811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf062afc6579e962730ad78bcc8d88b596a84cf9d965ad90336db7adec8d784a3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:33Z), 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/QZWFL2350817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70475723c98d58ea9a79fafa8ca13c94833f7075cbcc135c98f69a6cc8196f44. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEQ2457563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807dd520662dbe28108ccde0ce8879ec2fa5a0ff21f258ed2cc765b27ce1b3ad. 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/QZMEQ2457564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee5ce4fec6cf2d6e57027f8f8aa51f4a129c4f92793a28f572f8e7b9b6d35b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZMEQ2457566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caa1298cceb092680bb0d587f453e4298f4eeaf96afa460fc237663e2c79c11. 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/QZMEQ2457568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1f0f88fd7534ec6a4c07b5644dda6d5c3ce76184ee1cd8975886614b0f5777. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZMEQ2457569.
World of Sound: Melodies of the Eternal Cascades
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0940a1bcc47d573797b473d4ea5957165fdbf4640a7dd45d5d4756f7157014. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZK6P2539492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cbd8fd3dbdede05f6be9116c3269b3458fbbe239e343ef11db67d5003de5f1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2539495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be42aa1656d9f4907e8daf530ccb3bdfc6b5b0a4920ca26d077e94f6cff8abd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:50Z), 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/QZTB82502276.
World of Sound: A Ballad in the Skies Among the Stars