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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebb1e2132c2986144fa426e02780fa692b4979d96391d8588150cb2bf4c3f93. 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/069b8f89-e77c-4f94-9016-422c4e6abcd4.json and https://artists.proofprofile.net/proofs/artist/069b8f89-e77c-4f94-9016-422c4e6abcd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Exhaustion, Salt Water, And Everything In Between
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c61c8d13b2fb5346ed2da9773646e6d03fb3e66d31413ad94efee8fcb8e783. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US9730515201.
With A Mouth Sewn Shut (You're Pretty Well Spoken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8fe470b46c55f0b29602df7237fd7d9dd9267eefba0cfd642fe78b9ccb60a3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US9730515202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001424108b910098c8d71a6dcbca86f4b6698d5c20d36a33ecc3a33140da2073. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US9730515204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2674c396c596a4aa06f1a37b9bd1ed39ee0e37ce92788456bad4fac88a2e49. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/US9730515205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa361d28d62cb2efe1d6dafca6998f76a2bc2c3e520472dce6cfa3903bd924e97. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/US9730500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3c208eaafe2c5e07de8977754efcf5b4ea0e291848b8c4eb5f45e592a7a3bc. 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/US9730500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049ae7548a8a6bd29e53348f2b4e9680d2009251b98ffc0a45d4eb058e0c8f6c. 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/US9730500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2f6e29676bda5641157c40bd95a8bfe86a2a5337aaf220151fb79b23557e81. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US9730500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee24bc915c140a770218d3f72ef13e5387fd747064cee4afc0b0bb5f8b9cd0d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USEP41106001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6b62dc3d435a3ded70ac8387e689edb76081a1986298c1c3d3fde13ad1bf90. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USEP41106003.
The Blackest Beautiful [Spotify Preview]