The Los Angeles Master Chorale is a professional chorus in Los Angeles, California, and one of the resident companies of both The Music Center and Walt Disney Concert Hall in Los Angeles. It was foun
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 0x178a40b11fd0e46d0a7f0b25236847b1b8b522e8a2a94dd39cd0161fb141fb88. 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/17f5bea1-a7b2-48e1-a7c0-1bfb41bb76ed.json and https://artists.proofprofile.net/proofs/artist/17f5bea1-a7b2-48e1-a7c0-1bfb41bb76ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Adès: Dante, Pt. I "Inferno": I. Abandon Hope—
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 0x51c9c4fb738349e2a9cb3dbe233de8de012acced4b38ed7bc2d9962d0b4f67f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO12200660.
Adès: Dante, Pt. II "Purgatorio": I. Dawn on the Sea of Purgatory—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2e003abc8daf94b483f65294fdb834b2568358446a6bde054647a31f29a96c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USNO12200673.
Adès: Dante, Pt. III "Paradiso": Awakening—Moon—Mercury—Venus—Sun—Mars—Jupiter (The Eagle)—Saturn (The Golden Ladder)—Fixed Stars—Empyrean
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51faf6ffd28a22b006c207b4917493b68eb8cf318bbab99561921828d3695248. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO12200680.
Adès: Dante, Pt. I "Inferno": III. The Ferryman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c815a12361ca284729c7502f9b329378b8a7d759667934e8d3cafb051d28eb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USNO12200662.
Adès: Dante, Pt. I "Inferno": IV. Pavan of the Souls in Limbo—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1dab7011c9310cd844271949620993e243a3b614174c45bc875c4db70a0485. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USNO12200663.
Adès: Dante, Pt. I "Inferno": VIII. The Deviants—on burning sand—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc877065511fbf5cbf30aba53c08c55474bf755389d5b3b2b281cb029fca6358. 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/USNO12200667.
Adès: Dante, Pt. I "Inferno": IX. The Fortune-tellers—facing both ways
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f68681fa87be9dd383e895810b16a948bbea1194bbc16372dcdd79b65d2b83. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USNO12200668.
Adès: Dante, Pt. I "Inferno": XII. The Thieves—devoured by reptiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4688c798bf030aa2604ef0c57246555129aacfcbd7e4f6e9aa3f4e0c2511510. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USNO12200671.
Adès: Dante, Pt. I "Inferno": XIII. Satan—in the lake of ice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dd56121b10b43f05d940b4bc6e59cb502f587cf710fd11c11f200ea1592bfe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USNO12200672.
Adès: Dante, Pt. I "Inferno": II. The Selfish—stung by wasps
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a10e77dea0e1d6914128e924182769db7b05682489a7fcae2ccbe1250256095. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:58:48Z), 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/USNO12200661.
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
Adès: Dante, Pt. I "Inferno": V. Paolo and Francesca—the endless whirlwind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55868af89baa7b81d23bf638b01d69fae7a564a6033affdb5b7150708d68ba1d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:41:33Z), 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/USNO12200664.
Adès: Dante, Pt. II "Purgatorio": II. Mount Purgatory—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ff3c6c589ba38bb017cc8aea8d5324402fe953dc7923f8e0b3dcdc7f9b4466. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USNO12200674.
Adès: Dante, Pt. II "Purgatorio": III. The Valley of Flowers—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ef2838a4fbbeb2bf7cc2f9cfed13d90099b99801af7de25233f38adb780fbb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO12200675.
Adès: Dante, Pt. II "Purgatorio": IV. The Healing Fire—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cd06478f393984c36f899b33a95055402e5dba071b76daacfb6e4710e9c987. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/USNO12200676.
Adès: Dante, Pt. II "Purgatorio": V. The Earthly Paradise—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a658132448ce1de48a49acea0bb2e6e3a7292521de238132fe54ed2a885243c. 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/USNO12200677.
Adès: Dante, Pt. I "Inferno": VI. The Gluttons—in slime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e30abe83d2a5f744de29c966ca20da1c2f4de05f44e75f8eeec78fe217b54f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO12200665.
Adès: Dante, Pt. II "Purgatorio": VI. The Heavenly Procession—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272cf1d6b4ea609165f2edcb7e4ee9cb7e4b333fd423468c64b4eba90ea3c5e8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO12200678.
Adès: Dante, Pt. I "Inferno": VII. The Suicides—the bleeding trees—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee728d8029e91e9f98e40b0850e499c362ff6b8282912b86f62372166f70cae. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USNO12200666.
Adès: Dante, Pt. II "Purgatorio": VII. The Ascent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc656aa97b45f0c1d02b12bca0215a51572af46fcd51f617c371a32a147f8ac2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO12200679.
Adès: Dante, Pt. I "Inferno": X. The Popes’ Adagio—heads first—
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2bcbb18af1ee2f626c14066e319f278e15e747cc68d6dd7b6d927e3a456a6b. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USNO12200669.
Adès: Dante, Pt. I "Inferno": XI. The Hypocrites—in coats of lead
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65500076f6895bd174b76666545b99c4725069e74d7e5cf3376de572e6faf15d. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USNO12200670.
The Henry Mancini 100th Sessions: Henry Has Company
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf46d0ee8dee316efb5074da8725374d4914fa29a37f0755fe580a370662a65. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZUDB2201534.
Symphony No. 8 in E Flat Major "Symphony of a Thousand" / Pt. 1: Veni, creator spiritus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7680b1a6b7bb2e065f4b521d08970724f307b436aff0a077aa0fd178b0ae57e0. 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/DEN961930901.
Revolución diamantina, Act II: We don't love each other
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b07b1532cd0ffe793a894bc338ab410287282824e15a9ba3190ee446d0e83f. 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/US23A1582283.