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 0x5c34073612ebe67d2c5c160a64bdb915622c73b060910e182b9cdf730ff7f58a. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cc71b63-ebb8-45c9-b62e-1e975235b1e0.json and https://artists.proofprofile.net/proofs/artist/1cc71b63-ebb8-45c9-b62e-1e975235b1e0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Changed My Name: Marking the 150th Anniversary of the Emancipation Proclamation
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 0xec12dcbad5985c9dd27b68b22c45e09d69e8b05996ea96030f043b5987234902. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1312701 — a six-check JSON result.
Wade in the Water (arr. M. Hogan for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3d26ed1f9fd5d9c3f1c1737dc592312ac1310dfc955949865d5549fbb4062e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1312711 — a six-check JSON result.
Magnificent Horses (Arr. J. Ling-Tam) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9be94bbd4d436f44fe89098d100d9565a51718db7c14dc2648ef7b720577ed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1320208 — a six-check JSON result.
3 Love Songs: No. 3, Heart, We Will Forget Him! (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37715b62219abb295a5f71dbbf607c30378b5f4afb7cfa84c1b8be004c840e64. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1320209 — a six-check JSON result.
Somewhere (From "West Side Story") [Arr. R. Edgerton] [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907114acd65b6c5a451df2ed7682a067d56688d3e653f9a7ec858d1f00cf5ace. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1320219 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49a6a1c914593cc8e15ada96de406a796ce12118c58090837ca75ef671a860e. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1320220 — a six-check JSON result.
Consecrate: The Place and Day to Music (Live)
Triptych: No. 3, Consecrate the Place and Day (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999e436dbc2880e3f42530ba3f9f813d185c3aa05474a04f1a4b8272ce58835. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1320001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ca5185043be8212ef82dbb77376dbf0a9eee7b497e8a9e8d7d041552ca6835. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1320014 — a six-check JSON result.
Son de Camagüey (Arr. S. Hatfield for Choir) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7b7803b8761d08ed8667fe626eb9f9c21b93336ffdf27efc3b5df03cc696a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1319904 — a six-check JSON result.
Hold On! (Arr. M. Hogan for Mixed Choir) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b58c73e92f0e3389961b169b69e1ee01925b18a35d1a65c7267e8d3d37a2928. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1319917 — a six-check JSON result.
Live from Europe: Singet dem Herrn (Live)
My Soul's Been Anchored in the Lord (Arr. M. Hogan) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf97ba36f02bb04e3aad644e9ca0a34a8a60d79cebd43012b3fce58c377e375d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVXZ1320606 — a six-check JSON result.
I'm Gonna Sing 'Till the Spirit Moves in My Heart (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff8739ec2e45348f63f5cc81cdf1f79204885b339edf152e9e17db0f09bc553. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVXZ1320701 — a six-check JSON result.
Feller from Fortune (Arr. H. Somers for Choir) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5504d774e234a1e1970571b4d520a09e749baaba7be4f7e6633f7b215c2705a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVXZ1320715 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e633183b10abb9d2d70d67ddec903c58d496f383f8d7dec470729eb7c1cc17. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1320514 — a six-check JSON result.
Of War, Peace and the Power of Music (Live)
Alleluia (Version for Mixed Choir) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e8fcaf72eee1a0dca287c1cec680486c06b4f7d7dbe365d6790197993758e1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1510805 — a six-check JSON result.
John Saw de Numbuh (Arr. S.V. Gibbs for Mixed Choir) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe864a10cb6adc3f41fb37848a8e65e6682dd61913258c5c4a0dae470e38bfda7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1510809 — a six-check JSON result.
Homeward Bound (Arr. M. Wilberg for Choir & 2 Pianos) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc2b8187615f2a6b1d02bfd88432e705646b810ca48eb7e5fbb4707548ce770. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1615419 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc2b8187615f2a6b1d02bfd88432e705646b810ca48eb7e5fbb4707548ce770. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1615419 — a six-check JSON result.