Damien Guillon (born 1981) is a French countertenor.Diapason 2006 - p37 "Nom: Guillon Prénom: Damien Profession : contre-ténor Né en: 1981 Signe particulier : fruit de nos écoles maîtrisiennes, il mû
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 0x3e85fd6c8aa8b94b5c0436b34aeccdcf5578d03dba3a99769436430230253d4d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3f09ad2-50ed-43e1-bab1-3092da6ae924.json and https://artists.proofprofile.net/proofs/artist/e3f09ad2-50ed-43e1-bab1-3092da6ae924.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
From Those Serene and Rapturous Joys, Z 326: I. Symphony
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 0x4061ab704ea5e9d9fb808fce96c2d8e4cec51136fd889ddd07e28fd3e4c4dcc7. 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/FR50X2178001 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: II. "From Those Serene and Rapturous Joys"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b83348e81689fbf7efa784635937068461bc2670f9bab003b2795ae4e88812. 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/FR50X2178002 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: III. "Behold the Indulgent Prince is Come"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc54ab54aeb8fc39dc657dc132bb8da592fa186d51f80261017c803f90a1f1c3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2178003 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: IV. "Welcome Home"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aa388c1795dba9c9e64e9c80c030c81543bc77b03e241d308ea437415440b2. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/FR50X2178004 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: V. "Not with an Helmet or a Glittering Spear"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123c26957140efb4001b6b9b5487870f53ad9100e635ab49f24de9c58de58aba. 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/FR50X2178005 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: VI. "Allegro vivace"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2656d5e1c37bf9bf772e31a344a0cd39b1065e837909e4be28f3bf2e6523879. 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/FR50X2178006 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: VII. "Welcome as Soft Refreshing Showers"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefedd6da86c8aee23b5a8154de795c9dd3e1481ab155eaaef92869187c15e29f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2178007 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: VIII. "Welcome Home"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57eeb7bcf75bcac4cb59921e505b286ef40f89a498b93ee16de5cefbe918d72. 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/FR50X2178008 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: IX. "Welcome, More Welcome Does he Come"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1888efe065435298ef52408453d99880d923dd12f37634c37e9699cf1641500. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2178009 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: X. "Nor Does the Sun More Comfort Bring"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd668d9682e2ffa9dab4da40b320a7e689393344556645cd769078d5244b3a5a7. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR50X2178010 — a six-check JSON result.
From Those Serene and Rapturous Joys, Z 326: XI. "With Trumpets and Shouts We Receive the World’s Wonder"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2481d49e6f245ee5236bc021a14c39054d8f775734e6b1a7e426140d1a0af6f5. 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/FR50X2178011 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375a49b557cbbe15d68acb5b3ca2b41b80e705926ee3202d6ae0fa16bcfa2312. 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/FR50X2178012 — a six-check JSON result.
Fly, Bold Rebellion, Z 324: VI "For Majesty Moves"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135b1d0eba222e120479155404bcdcbc373262976f024de5f90da87cf17ace5d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2178017 — a six-check JSON result.
Magnificat en sol mineur, RV 610: II. Et exultavit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f6786f84fcc306cab9d31673c538bde75d8ce32c9593f9c3484b8c28389220. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM7281461703 — a six-check JSON result.
Magnificat en sol mineur, RV 610: VIII. Sicut locutus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1532c6c101a375cdd44da110a0c674801d501f1ff10117272ad784ab371caf. 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/QM7281461709 — a six-check JSON result.
Magnificat en ré majeur, BWV 243: VI. Et misericordia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ac0755b42e3bccdeb81cee1e43ea32d945464609056349dbb76d955bf19c64. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281461720 — a six-check JSON result.
Magnificat en ré majeur, BWV 243: X. Suscepit Israel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834824c768aa6e3a78c0a85d61bb38b11a3c355373d72b52133452e4fc280e2a. 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/QM7281461724 — a six-check JSON result.
Magnificat en ré majeur, BWV 243: IX. Esurientes implevit bonis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92d82719167c457f64cb981883ec04ac28807cef90106b89d2d535fffa8feeb. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7281461723 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc6bd5e27d898b0312ef77a4efd406e10f38b0901891798cb06ff84a5303e9. 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/USB8U1611526 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73ff49a4d1f4bd70595fcfd9b907c21c2919a8e7871e481ebd5953ea147242b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1611532 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56caf7dbd94b0ff2050758748869a4584bd748f65de226542ee229fcdacbc4cf. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USB8U1611552 — a six-check JSON result.