thumb|right|Members of the Kronos Quartet with Paul Hillier (middle) in Malmö, 2005 Paul Douglas Hillier OBE (born 9 February 1949) is an English conductor, music director and baritone. He specializes
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 0x972ed88041a380389dbe301d076da6d35e87637cb29041135d50957fe00bfc88. 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/ad7b5eb1-d640-49b4-93ed-6f852f483728.json and https://artists.proofprofile.net/proofs/artist/ad7b5eb1-d640-49b4-93ed-6f852f483728.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Psalms of David: Psalm 104 (Bless the Lord, O my soul)
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 0x7c70853e3716c67c8a51dee0d18d8689516304d79790745d6a1144e04e8d4221. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USHM10231101 — a six-check JSON result.
Psalms of David: Psalms 1, 2 & 3 (Happy is the Man)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61da210da8f3b23efd1dd54fc84d55213ae4d03b79f34e56de40b8b0fe4c38b6. 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/USHM10231102 — a six-check JSON result.
Psalms of David: Psalm 141 (O Lord, I call to Thee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcf6cf2cce9ba5254b8354598f5fcb25eb272cfa40e5a33a2ea4227a59deb2a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM10231103 — a six-check JSON result.
Psalms of David: Psalm 121 (The sun will not strike you by day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a3667ab58b66187d539a448333a81c26f387a98d40d14220eccf31cff9c89e. 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/USHM10231104 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145710c2434465e2c945094a5551880d7df0c994a78f0b2f08277df41b6343c9. 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/USHM10231105 — a six-check JSON result.
Lorca Suite, Op.72: I. Canción de jinete (The Rider)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adf7f388220723baa3f18e1836242d595c86bcdae7b1870251876b1602acedd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10231106 — a six-check JSON result.
Lorca Suite, Op.72: II. El Grito (The Scream)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e101fcdbdba2a277fe0f7e2a28463f747372137dd048fb0d1eeb6ae8c59f0d. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10231107 — a six-check JSON result.
Lorca Suite, Op.72: III. La luna asoma (The Moon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d140699564ada7e60511674b9472045c98d4aa59dfee97aa4d7484b4768e25. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USHM10231108 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e09859ef9e7d4464098164064d4dd49fb181d49675365f384334da592da774. 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/USHM10231109 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cb702e1baa259cfca0ee5cfca2822268913ec9a768c82470f5c08dbde4244f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10231117 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c303a527e86c774cf8a5e5ecf78e60a97bee81935dbdee2dbd21e3acc63414b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10231118 — a six-check JSON result.
Cantigas de amigo: I. Ondas do mare de Vigo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fabfd8778ba4820772baef1e0e215d2d37052dc3672f981e0ec3d48ccfa924b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM19437802 — a six-check JSON result.
Early American Choral Music, Vol. 2: Anglo-American Psalmody 1550-1800
Colchester ("O 'twas a joyful sound to hear")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4120797ec613a9d22dd440f589a05fc8ac0f1ee78281cf6132d68595d8e8989a. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19612801 — a six-check JSON result.
The Humble Suit of a Sinner ("O Lord of whom I do depend")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5ba4e27408c4b44c4a1286c66ea0b44b1e7e28d83f2ae5add4ba6b66d69189. 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/USHM19612802 — a six-check JSON result.
The Lamentation of a Sinner ("O Lord turne not away thy face")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade2688a9d52c306a2f5b564dd292f1e7d3a62fdb433cf2bba0c76d6a56d114. 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/USHM19612803 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c5a61e91e4e99c3bfd519dce6e479c73b71745bde5d5452e1b64868e03dac4. 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/USHM19612805 — a six-check JSON result.
Cambridge Short/Southwell ("O God, to rescue me")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562f61bc24dee78e42ed4a540d18c418124c9d2f68b5b0c6cf851be892522fd5. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/USHM19612806 — a six-check JSON result.
Thomas-Town ("Great God, how frail a Thing is Man")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2324579dcc457a074336ed0f05c38bffe9f720ac2ab5ba083ac0ebef7112fd. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USHM19612809 — a six-check JSON result.
Chester ("Let tyrants shake their iron rod")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf275a3fc1f29a2af9f81539a3b7598b667d82c2ae601a93c77662ee17e2191f2. 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/USHM19612810 — a six-check JSON result.
Chesterfield ("Death may dissolve my Body now")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf187cc3bd0d6f9a259346ba94e25db3531caa1eff28f063d57f8b56d2b3ffb28. 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/USHM19612811 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08659349eb81b37ef36ab8258309ba46928fb338b5e0cdbadf4816de8119fb3e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19612812 — a six-check JSON result.
Worcester ("How beauteous are their feet")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa0209e619c0bb2cba3686b686ceb87d407470ae748a7e6c180202b361915e6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19612813 — a six-check JSON result.
Amanda ("Death like an overflowing stream")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f608250458b4ad458aa35abb629233dfb216b1a0ddbf5fb768b9b4f37321031. 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/USHM19612814 — a six-check JSON result.
Montgomery ("Early my God, without delay")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84936ffb50bb56f9f8422f8abac82cdbb95cd1c77c22c8bd4343213177fe8da. 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/USHM19612815 — a six-check JSON result.
Windham ("Broad is the road that leads to death")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7774461b499cf19244154dd0946761d84e9eefe4588761d0f9d764e87d234d80. 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/USHM19612816 — a six-check JSON result.
Rainbow ("Tis by thy strength the mountains stand")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e6dfab56903be423028d93d37700ba6fc156896ae5d5edade6d17057fe7719. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USHM19612819 — a six-check JSON result.
Schenectady ("From all that dwell below the skies")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d919098ae04b9e201f1b2897c578163c73198f7d86537cb344822b90c4a326. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19612820 — a six-check JSON result.
Greenwich ("Lord, what a thoughtless wretch was I")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedf625ddc93d8780581834894f91156a0c3efe3eaf9bc38972100ae2fb808cb. 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/USHM19612821 — a six-check JSON result.
Evening Hymn ("The day is past and gone")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0cb6897fe72b074574b116695b082b8dea9b1b62fa19535ac2382368f1bae1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USHM19612823 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6fcf820ef0412c9e0ea4fc396c134a4122f041f859af79182d66efbf8e61f0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10127601 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d77cbe5cb59fa996cdd0ea62c04bbc858c853dd5a0a0957cd073b531297aa. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USHM10127602 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926741aca44cca9e3f52d65ef94d02fa103df594eda90531a5eb695a25f9e155. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10127604 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4624bfbf9ae6bb6f46a2ccde733d3a44317f6c46b60cd41f83944f8a7cbe879. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM10127615 — a six-check JSON result.
Viderunt omnes, Notum fecit Dominus (The Notre-Dame School, 12th c.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4831d8888eba08c44eb6eee9fdea514203558a142bc09d6eb33a8892ec0e69. 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/USHM10127621 — a six-check JSON result.
The Natural World of Pelle Gudmundsen-Holmgreen
Pelle Gudmundsen-Holmgreen: Green Ground (Live)
Viderunt omnes, Notum fecit Dominus (The Notre-Dame School, 12th c.): Viderunt omnes, Notum fecit Dominus (The Notre-Dame School, 12th c.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4831d8888eba08c44eb6eee9fdea514203558a142bc09d6eb33a8892ec0e69. 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/USHM10127621 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 1, Vergine bella
Palestrina - Twilight of the Italian Renaissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d398cdb18c66854c6689404c3674ceb0c9e0d83ebb0a6ddb2a7a0b335d24190. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAYC8401313 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 2, Vergine saggia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53543d9691d453212f25f5323429fc4cab1be17abab5ca189547664f34382fc3. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8401314 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 3, Vergine pura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c07a4d507e84651b2d04eede30c051ea7a1c6c3ac2e6b01502c556c4f3e29b. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8401315 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 4, Vergine santa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc567e14133a898f82c28705a135b6a21eb6b328cff17988fe524b0b3c48648ed. 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/GBAYC8401316 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 5, Vergine sola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442446f39047b9fffa2c9a8277f15ccf017e6956ad68c2ff4799c2fd50e0f257. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBAYC8401317 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 6, Vergine chiara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293a69585560898d6dbfee590f2844e570538ebad1cf6ca320a480472c510fb3. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBAYC8401318 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 7, Vergine quante lagrime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f008b3388c6fbb6066cea5c20f71f58bbf4bf400a574274a2efd895649c9c3. 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/GBAYC8401319 — a six-check JSON result.
Palestrina: Il primo libro de madrigali a 5: Stanze sopra la Vergine: No. 8, Vergine tale è terra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa827d87022ba5b47dd1c29232005457612b707c3173fa7d67732571416b84986. 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/GBAYC8401320 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b43b5d13625735229b61abc1ecda71bd10dae1031dc6848152ce493a028f0f8. 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/USNO19643001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199d5d9e6b8a4a5b88c8896f85effbbdd7784cdba89645c3b8d7f33ba1d615a4. 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/USHM19818501 — a six-check JSON result.
Mater ora filium (Sacred Music in 14th-c. England): Mater ora filium (Sacred Music in 14th-c. England)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdb092050db46ae5c376acb972bbae4f553b691bde16262fb6ded022cc0e49c. 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/FRZ148409130 — a six-check JSON result.
Mass for 4 Voices: Mass for 4 Voices: Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce6e10dd797959f0a9e15805e8d94c4dbefa2eee0cd01e6e7a25ada8fff29ee. 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/USHM10022301 — a six-check JSON result.