thumb|upright|Corboz in 1990 Michel Corboz (14 February 1934 – 2 September 2021) was a Swiss conductor. Life Corboz was born in Marsens, Switzerland, and educated in his native canton of Fribourg. He
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 0xcddd16e4981702347008eca1602e33d4d3d13a04c0d5d8dabb64a76475acf36f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e554ab95-4217-49f4-8598-7f3f72ad06b8.json and https://artists.proofprofile.net/proofs/artist/e554ab95-4217-49f4-8598-7f3f72ad06b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Charpentier: Te Deum, Beatus vir, Tenebrae factae sunt & Seniores populi
Charpentier: Te Deum, H. 146: I. Prélude. Rondeau
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 0x78a4e9e03d87dcf0461382c3a866a95b7eebf0b34cae6b0c578a343eb9bd4116. 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/FRZ202200221.
Charpentier / Transcr. Lambert: Te Deum, H. 146: III. Te aeternum Patrem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4a7876f494b3c11dd931eb725068f9da722eb833e1238913e516da0cea9004. 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/FRZ202200223.
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
Charpentier: Tenebrae factae sunt, H. 129
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74937d58798f902325da3318cf08eb880f67642db013d40c3f506bf114cb7c8b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FRZ207704200.
Charpentier: Le jugement dernier, Salve Regina & Miserere des Jésuites
Charpentier: Miserere des Jésuites, H. 193: II. Miserere mei Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1be182c47b4f52c92eb71afb5142a7e7d406e7154f9d9b985fa3d75ce1de675. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ202200128.
Charpentier: Miserere des Jésuites, H. 193: III. Amplius lava me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d23e11c2b21fa283da85330e2ed90c4085d68171e44b8540feee53059f6d77. 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/FRZ202200129.
Charpentier: Miserere des Jésuites, H. 193: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce19cd483f961fcd5c5ad91db7f9a4adb4972d1230786c6eda013bf9f79e6373. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FRZ202200127.
Charpentier: Miserere des Jésuites, H. 193: IV. Ecce enim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf70fb27bde3408bfbce19b998b8a3764f9a7b1d55bab062b4ef25fdf7f64e98. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ202200130.
Charpentier: Extremum Dei judicium, H. 401: XI. Chœur des élus. "Hymnum dicamus Domine nostro"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661cedd6995072905a2c0232ac5cfac0dad15038d242eb660ab9622b9d09d59e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRZ202200150.
Carissimi: Jephté, Ezechias, Abraham et Isaac & Tolle, sponsa
Mendelssohn: Psalm XLII, Op. 42, MWV A15 "Wie der Hirsch schreit": No. 1, Chor. "Wie der Hirsch schreit"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068dbf3bf3ae6f8036730107baad1086df71171d5631014d9239aa9214eb907f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ207702901.
Mendelssohn: Psalm XCV, Op. 46, MWV A16 "Kommt, laßt uns anbeten": No. 1, Moderato. "Kommt, lasst uns anbeten"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bedaca0b7203cd61dd9d05738d32f4795b9df945e7f447a38d40a3779d5b42. 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/FRZ207703001.
Mendelssohn: 3 Hymns, Op. 96, MWV A19: No. 3b, Fuga. "Lasst sein heilig Lob uns singen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73be32211e672b5fc21e13aea242fa9c2fa4619188339faefaaa83016238427. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRZ208713604.
Mendelssohn: Lauda Sion, Op. 73, MWV A24: No. 5, Coro. "Docti sacris institutis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490d960e9866ab3300b994823c9623eeb76e2d20bbf67b671bdd7bc545bf91af. 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/FRZ207809805.
Mendelssohn: Lauda Sion, Op. 73, MWV A24: No. 6, Aria. "Caro cibus, sanguis potus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15a8d3fcbe7515ac59787fb52238974310a62665b98e7b6f6140e1f439bedf5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ207809806.
Mendelssohn: Psalm XLII, Op. 42, MWV A15 "Wie der Hirsch schreit": No. 2, Arie. "Meine Seele dürstet"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8612b6a1a6a170e0cadc2f8be23636e777ef0ab7739d13c3f15a5fc98e2427c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FRZ207702902.
Mendelssohn: Psalm XLII, Op. 42, MWV A15 "Wie der Hirsch schreit": No. 7, Schlusschor. "Was betrübst du dich, meine Seele"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f0e369b7253f8668d277a3a68abf062d95d35db9a3b7be040cdf66823f3bbd. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/FRZ207702908.
Mendelssohn: 3 Hymns, Op. 96, MWV A19: No. 1, Andante. "Lass, o Herr, mich Hülfe finden"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b36d727bc22cdab7c68de09f94903c5b259c6efb280651acdff848393cba8e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ208713601.
Mendelssohn: Lauda Sion, Op. 73, MWV A24: No. 2, Coro. "Laudis thema specialis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376e177823521c0f10b3288e02d1d2ee2e6d84730fe5836c213120d7630ed25. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/FRZ207809802.
Mendelssohn: Lauda Sion, Op. 73, MWV A24: No. 3, Aria e coro. "Sit laus plena sit sonora"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f549929e2d1df7ddb9c03b3731aec2fde262072865cc02c0439840942e37758. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRZ207809803.
Mendelssohn: Lauda Sion, Op. 73, MWV A24: No. 4, Quartetto. "In hac mensa novi regis"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77216aa281033ec61754658e4b3ff80afb768f2c15c49a4b208dd2cac201561. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRZ207809804.
Mozart: Requiem in D Minor, K. 626: I. Introitus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e260f1b45417fe10d1f4527e7424eb94d9b9b95c718dafa70631f9bbf4ac216. 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/GBAYC9503466.
Mozart: Requiem in D Minor, K. 626: VIII. Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8303a402b5b78436589250ae38c7cc1a5357ade243c0c1c6a169f64980b872f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC9503474.
Mozart: Requiem in D Minor, K. 626: II. Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b6f6dbe99759a286e30f8bb9e5181383f979136e5c92fbd07a6d180f292f02. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC9503467.
Charpentier: Te Deum, H. 146: I. Prélude
Orchestra of the Gulbenkian Foundation, Lisbon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42964f06b6f7afb6650181f67872b98d4d43654603b3e89458317c88935f001. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRZ207700901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8303a402b5b78436589250ae38c7cc1a5357ade243c0c1c6a169f64980b872f0. 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/GBAYC9503474.
Fauré: Requiem, Op. 48: I. Introït et Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0600d1b69c47e0da088b9fd71a4edf636e611fd6981f2ebf59715cff3c8f458e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAYC9203402.