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 0x40ae5e4e52d79f7ecefb19f6127e1d4e7efe551f9d0bbe488652f95d09d41c3e. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85c17ed5-c651-401c-a23a-a38cb51257a7.json and https://artists.proofprofile.net/proofs/artist/85c17ed5-c651-401c-a23a-a38cb51257a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Simon Boccanegra / Prologue: "A te l'estremo addio" - "Il lacerato spirito"
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 0x972d6dda1b32a8789f5ffa2e9e7edad212c6ed4b74e5e1296a04365beb8e049b. 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/GBF071340403.
Simon Boccanegra / Prologue: "Oh, de'Fieschi implacata, orrida razza"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e21eea9569b8956a5f44b531eaddcdf3094d8f002340ad5c8c3511c8a6061a. 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/GBF071340405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6dec9d8cee5533b04f6271fa2bcb9f689ded35c4865f265cc4584212238fdd. 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/GBF071340406.
Simon Boccanegra / Act 2: "All'armi, all'armi, o Liguri"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159b3a9d86a4a24a64e1a9b221798c7da9b8f800cd9af4d2334c20b9c222b75d. 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/GBF071340424.
Simon Boccanegra / Act 1: "Cielo di stelle orbato"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb49915189baa697e559213dddef481e90a465e285af459511f851c4c47d8c62. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071340408.
Simon Boccanegra / Act 1: "Propizio ei giunge!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dc79008c9ae0cc56713b07977c8374b9f440964143b7791c63312d10e5bd54. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071340409.
Simon Boccanegra / Act 1: "Amelia, di come fosti rapita"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ca628073851f1857296fe82be2a883ef312ec6dcd6a837d45d7bf356379aba. 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/GBF071340415.
Xerse, Act I Scenes 1 & 3: Sinfonia - Ombra mai fu - Tutti dormiano ancor dell'alba i rai - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3db13599b2f6907647fe08e6330d44c091cd608d1661fb8595d13cf71de9b8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192315001.
Donizetti: Le nozze in villa, A. 4 (Live)
Jommelli: Missa pro Defunctis, Libera me & Miserere
Missa pro Defunctis in E-Flat Major, HocJ A1.3: I. Introitus, "Requiem æternam"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578475fd41e4c5c41dd448888e673e91bf42f5c42af00ab7888b339e30afca26. 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/BEE022007601.
Missa pro Defunctis in E-Flat Major, HocJ A1.3: II. Kyrie, 1. Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927e5b32fde6705c03b23561fbc7c68b9ef43ac6584fa635f4d17402832e1892. 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/BEE022007602.
Missa pro Defunctis in E-Flat Major, HocJ A1.3: III. Sequentia, 3. Oro supplex et acclinis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc44b637c0aaeb1b41af837f30d346221aef03ee5588c8a7a1ea4a4f18f9caa. 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/BEE022007607.
Missa pro Defunctis in E-Flat Major, HocJ A1.3: VI. Benedictus, 1. Benedictus qui venit in nomine Domini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb914279ed9e08249464f4b063b0da4a72dae42d4d9c0f78e23819c94e77da3c. 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/BEE022007616.
Missa pro Defunctis in E-Flat Major, HocJ A1.3: VI. Benedictus, 2. Hosanna in excelsis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b22ed0389cfaf1e9a9e2a365880740487b0e3d109077e647a0e881f6dd7e086. 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/BEE022007617.
Missa pro Defunctis in E-Flat Major, HocJ A1.3: VII. Agnus Dei, 1. Agnus Dei, qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650e1db0176a78dc8b16d05849a88920a7837961d375a4a24485ac3a36230069. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE022007618.
Missa pro Defunctis in E-Flat Major, HocJ A1.3: VIII. Communio, 2. Requiem aeternam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef519a57d11e64a070c5abcaa36dc5c06e0f88311dd784e59115e05c27fb919. 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/BEE022007621.
Libera me in C Minor, HocJ E.2: III. Dum veneris iudicare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde31919eb26189e655505a78a41729d923db71bd16a1eb90fc9df574ddc1daa8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE022007625.
Libera me in C Minor, HocJ E.2: IV. Tremens factus sum ego
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b527da93f54528926afa342fd28f825c756a398fb5dd0bbcedb5c2e8d7bb55. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE022007626.
Libera me in C Minor, HocJ E.2: VII. Dum veneris iudicare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b59d4cf16c13fd6c025947a91cf3db436e0b91cd562dee45a893a4fa1c0bd6. 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/BEE022007629.
Miserere in G Minor, HocJ C1.23: III. Quoniam iniquitatem meam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335e44e70328e9b1d454e0c17da58144badbec07cf4dc7d2b32c0babccca7a7f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE022007633.
Miserere in G Minor, HocJ C1.23: IV. Tibi soli peccavi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f8101b99de371eeaa0f334302a09f0ee6cc1c01f3b841b525359c07d54d02. 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/BEE022007634.
Miserere in G Minor, HocJ C1.23: XII. Redde mihi laetitiam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e956b8b2b2db59631eecbfbfda6a58ef248fa757e61611106bbc67b364d6808. 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/BEE022007642.
Miserere in G Minor, HocJ C1.23: XIV. Libera me de sanguinibus, Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e80a55d2cba9f5feaaf3f058d24b6c8f1a94ff6e70f14e791eb127da683458. 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/BEE022007644.
Miserere in G Minor, HocJ C1.23: XV. Domine labia mea aperies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630e25867e6daa0d08afdf3fb0e15b9cd7c9c4bcc7e5d71524c8a5d1f3f1c3d1. 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/BEE022007645.
Miserere in G Minor, HocJ C1.23: XIX. Tunc acceptabis, 1. Tunc acceptabis sacrificium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92210286f2c6360b46bfbf59b2b3c46de55780347110aa257e451f3e80780a44. 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/BEE022007649.
Missa pro Defunctis in E-Flat Major, HocJ A1.3: III. Sequentia, 1. Dies irae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adaa6ba8ab9c19ed4f2dd45082c2624d2d898e8afb8e8bfb7548e142216d28f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BEE022007605.
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
Missa pro Defunctis in E-Flat Major, HocJ A1.3: IV. Offertorium, 1. Hostias, (a) Hostias et praeces tibi, Domine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c0a7609ac7782df3b5eb70d855cbfda489f2aa9b02d2a19020e5b9dd521c7d. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/BEE022007612.
Libera me in C Minor, HocJ E.2: I. Libera me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b2ec4f2a06992ebe929ae1a5ddc55f01c6839903a2e5f4c7d6373974c60def. 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/BEE022007623.
Libera me in C Minor, HocJ E.2: VI. Dies illa, dies irae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea7e223dbc98cd2cdb1830519e057d45b460c75fb9fb7b82620752a6b07a806. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BEE022007628.
Miserere in G Minor, HocJ C1.23: VI. Ecce enim veritatem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6138054693a5cf0bf201917df1ae3fa0e4042d9e48e176c5b9d285dc4c0c53e3. 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/BEE022007636.
Miserere in G Minor, HocJ C1.23: XVIII. Benigne fac Domine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed3838bf54385d309417d8aaae4c2a05da015b4c14f5d490b791af454d8b0ea. 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/BEE022007648.
Messiah, HWV 56, Pt. 1: Part I: O Thou That Tellest Good Tidings to Zion (Alto, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d6fbd7225be00351ac5f48fdc5486cca90523c9130fda75c0c03cd951123ee. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATG301613509.
Messiah, HWV 56, Pt. 1: Part I: For unto Us a Child Is Born (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ee074dbeef956ce7654c9efd3da239754c45c10d7bc5c9c533f83b8dee2226. 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/ATG301613512.
Messiah, HWV 56, Pt. 1: Part I: But Who May Abide the Day of His Coming (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6685ac53e32a44a004fcff9a52c1c9dc06363742be35534827da9cd17291c1e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATG301613506.