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 0x161ebbb6bd40c8d7851028f9a87c5ca38dd639463b29e324287c22130afd88b6. 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/20a8dce1-bb63-4f2a-a4a1-74329adfd24e.json and https://artists.proofprofile.net/proofs/artist/20a8dce1-bb63-4f2a-a4a1-74329adfd24e.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 0xf753ba925c932ffafa0faedd17416c8bd81f60954ef098f150d4d49dd0e9f891. 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/GBAYC1402315.
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)
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.
Stephen Sondheim's Old Friends: A Celebration (Live at the Sondheim Theatre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dc9ae8fb7b76c7208cd60ec91f81409ec3cee2524bab70e87c28f3d46ef112. 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/USRH12300378.
Stephen Sondheim’s Old Friends Original West End Concert Company
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7372e6faaa3659a174f10bcc7643eec09af2f3d9cc2010e171f8bdc7d20a22f. 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/USRH12300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bc4b933e44fab16bf8874a5c10490b912936f30acac859573c3b478a7f4302. 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/USRH12300400.
The John Wilson Orchestra at the Movies - The Bonus Tracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0db120fe9d45305bc92e5bc9b2ded8ab0b11ee03ff99b0b78ccbe14820b6c5. 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/GBPFW1200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a39ca5ef5aaa918352dd18695a68bcaeb8bbda5f672503b7fbc34d6d3c286b4. 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/GBGAM1300052.
Blinded by the Light (feat. Steve Balsamo & Anna Jane Casey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42759cac2fd502fbd926eb703a3a6cb31ce9cb4ddf5b392a8094cc919fd3f52b. 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/GBGAM0900015.
Cole Porter: Stereophonic Sound (From "Silk Stockings")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8964b8724e213003a83c51a6b27500661811925637a3428a5199fa1ba1ab5a. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBAYC1402303.
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
Cole Porter: From This Moment On (From "Out Of This World")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b6017c0d828aef790d8b495f89b72e34ede7559f2ee70f36425ee925f06947. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBAYC1402306.
Cole Porter: Always True To You In My Fashion (From "Kiss Me, Kate")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634fc4e47bc0c134ae94881b4021330e24def13e3f752fce35ad7264d3ca281e. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBAYC1402307.
Cole Porter: Who Wants To Be A Millionaire? (From "High Society")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf4d98089e0af0b1b29a95491944441ce7692b4a5c0285b75fe70e8304d6a20. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAYC1402312.
Impossible / It's Possible - Live from Theatre Royal Drury Lane / 2023 / From "Cinderella"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c051d9a8c31b8b617de98ccd191f7074dbd79d8bd01ef5c2e734a73e2ee094. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USC4R2442168.
The Lonely Goatherd - Live from Theatre Royal Drury Lane / 2023 / From "The Sound of Music"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811c498ece2fd11b5abaf416689acfbece276a99150a25ea4c49207b59c21b81. 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/USC4R2442174.
Rogers: Flower Drum Song: I Enjoy Being A Girl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dba9441cfe9b41607697c283e35de3484c16cb031a167c0af8dafc153324706. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBPFW1200154.
If I Could Write the Book of Life (feat. Steve Balsamo & Anna Jane Casey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783d986aa08082452d32d1123da86535e737d9226dc16ac74fbbe7bbd88ca6de. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBGAM1300062.
Annabel Lee/ Let the Sun Shine on Me (feat. Steve Balsamo & Anna Jane Casey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf509c87f0b010dce157fd40acfb3206fa947d775162b322d0da81bcf5645108. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBGAM0900024.