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 0x4d1ddebd0e040c5ca2201bdfb5f9af1d1ed85c6205a764766f09d0b7a4d780ba. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de4986b7-7fea-4ff0-82f1-13e4bc439ef9.json and https://artists.proofprofile.net/proofs/artist/de4986b7-7fea-4ff0-82f1-13e4bc439ef9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
June Is Bustin' Out All Over - Live from Theatre Royal Drury Lane / 2023 / From "Carousel"
My Favorite Things: The Rodgers & Hammerstein 80th Anniversary Concert (Live from Theatre Royal Drury Lane / 2023)
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 0x3da8790cc98fed9b9761b9180179ea9213e8f81cae289dfb88df931ec02fa174. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USC4R2442146.
I'm Gonna Wash That Man Right Outa My Hair - Live from Theatre Royal Drury Lane / 2023 / From "South Pacific"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952e66ec626da1b929876170b11e3d5baa7a52e3d81264579fa73941e8ca6dda. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USC4R2442156.
Edelweiss - Live from Theatre Royal Drury Lane / 2023 / From "The Sound of Music"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8a4f8d5d333e332b5232c8e48f00ab2f2534a626ccf5280b116cfed62d7bbd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USC4R2442176.
There Is Nothin' Like A Dame - Live from Theatre Royal Drury Lane / 2023 / From "South Pacific"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0078563de3291580e0bf60c7fac7ee95431d9bde9a6581a9c332a7413ed684. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USC4R2442160.
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
Kansas City - Live from Theatre Royal Drury Lane / 2023 / From "Oklahoma!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e98305bec446926d1f4b0276baa991b9f08c31e4d3c65e5594ff078ac42391d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USC4R2442170.
Do-Re-Mi - Live from Theatre Royal Drury Lane / 2023 / From "The Sound of Music"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb45ebc4eb185cc9f2c01900ea09a837bcf93e93c798a4493d10b588f09e17b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USC4R2442173.