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 0x0ccf2acd421b61bcb7c54527d614cc6fdc10a137301224e4d2f8a3320c83fa11. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df650bb9-e8d8-4db9-a898-e94598190b4f.json and https://artists.proofprofile.net/proofs/artist/df650bb9-e8d8-4db9-a898-e94598190b4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x08eedbb5ac52a7eafdebdc33fa57f5d4b34591db45c58dfdd4ac193eebcc911a. 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/GBAYC9702780.
Puccini: Suor Angelica: "Ave Maria" (Coro, Suor Angelica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5965ad731a1109c01bab6bb650bad05fd6dde83ca50bb23eb3e0c6066cd4be94. 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/GBAYC9702798.
Puccini: Suor Angelica: "I desideri sono i fiori dei vivi" (Suor Angelica, La Sorella zelatrice, Suor Genovieffa, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f568e2cb9cb62e9ebff657369e2421cfe632c3f3335ac162582f2fe1482f422. 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/GBAYC9702801.
Puccini: Il tabarro: "O eterni innamorati, buona sera!" (La Frugola, Giorgetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ce975be1e6594d63929ef874d0ce02a51df6d3a2ece9558320dce11459188. 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/GBAYC9702784.
Puccini: Suor Angelica: "Ho un desiderio anchi'io!" (Suor Dolcina, Suor Genovieffa, Suor Angelica, Una novizia, La Sorella infermiera, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34a5792c79fe1cd9586c432495310278a8336d0a9c9eae98b474b014dbe3e42. 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/GBAYC9702802.
Puccini: Il tabarro: "To! guarda la mia vecchia!" (Il talpa, La Frugola, Michele, Luigi, Il tinca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb08b2c544a9f916e05888b506ad2770f09db3f056559a1a9eeee5119b2ffe3. 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/GBAYC9702785.
Puccini: Gianni Schicchi: "Firenze è come un albero fiorito" (Rinuccio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997fa4aad38b0a71fda54492c98f5028967a9063557d6ac7c55dbd4e3a7d1bdf. 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/GBAYC9702823.
Puccini: Il tabarro: "È ben altro il mio sogno!" (Giorgetta, La Frugola, Luigi, Il talpa, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e17ec3b9d013359f5d16b0897ab670e4d5f47a1f0a0f58cb00cc37b6e9223d. 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/GBAYC9702788.
Puccini: Il tabarro: "Miei vecchi, buona notte!" (La Frugola, Il talpa, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb0cc8a80012e78f6483abd20d284c213d9c48f259d0375b47ff8bacc51bb7e. 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/GBAYC9702789.
Puccini: Gianni Schicchi: "O mio babbino caro" (Lauretta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd07c9ced070df0a89791beeca0c5d64914cea022ee300c55c18b460c103c875. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAYC9702826.
Puccini: Il tabarro: "O Luigi! Luigi!" (Giorgetta, Luigi, Michele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba96189a6924fa7b2b55bb95f5ede87a10227004edf019dd9d74bdcceea79fe. 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/GBAYC9702790.
Puccini: Suor Angelica: "Nel silenzio di quei raccoglimenti" (La Zia principessa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bef6d85a03f0c69c678e9f451aa1121d5cd8e91feff927b8541abf252b6a2fc. 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/GBAYC9702808.
Puccini: Gianni Schicchi: "Datemi il testamento!" (Schicchi, Lauretta, Rinuccio, Zita, La Ciesca, Nella, Gherardo, Marco, Simone, Betto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d68e58b1232095b8e6b2de51fecba7c94999f9b8958960a58f87b1be77fbcfb. 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/GBAYC9702827.
Puccini: Suor Angelica: "Senza mamma, o bimbo, tu sei morto!" (Suor Angelica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce906b51ffebca9e4dd18e163a6bef556328ddf2b2c098aa264694cead7325. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9702811.
Puccini: Suor Angelica: "Sorella, o buona sorella" (Suor Genovieffa, Coro, Suor Angelica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd61235eff4f195dbc71aae0155cd38355c13647ca1c60f04792452b5a212e4. 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/GBAYC9702812.
Puccini: Gianni Schicchi: "Schicchi! Schicci!" (Zita, La Ciesca, Nella, Rinuccio, Gherardo, Marco, Simone, Betto, Schicchi, Lauretta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee31ef3e6cef474c9135c7599dc8d890bb9b3b7f0035ed314199423c11acc3d. 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/GBAYC9702831.
Puccini: Suor Angelica: "Suor Angelica ha sempre una ricetta buona" (Suor Angelica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab772a0e676bbaf4f0a40230807953169188cae8206c5e53fcb6a9366d8e133. 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/GBAYC9702814.
Puccini: Gianni Schicchi: "Nessuno sa che Buoso ha reso il fiato?" (Schicchi, Zita, La Ciesca, Nella, Rinuccio, Gherardo, Marco, Simone, Betto, Maestro Spinelloccio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15a1d8e433adb21a5c4702d0d765c3e57ad9aeaea3fc349f38de4a293a615cb. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBAYC9702828.
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
Halffter: Siete cantos de Espana (1991/92) - World Premiere Recording (Digitally Remastered)
Britten: Rejoice in the Lamb, Op. 30, Hymn to St Cecilia, Op. 27, A.M.D.G., (Choral Edition, Vol. 1)
Rejoice in the Lamb, Op. 30: I. Rejoice in God, O ye Tongues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faabb0bf0caca0fbe9dd640a66b05ecba9323fdf199dcc8c68c425a3d9f1832. 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/GBLWD9700305.
Rejoice in the Lamb, Op. 30: II. Let Nimrod, the mighty hunter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7f1fc1efa5f6c5c5faf854dd8f465a9869d8c75ac7b55b5ce4fecb205b7569. 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/GBLWD9700306.
Rejoice in the Lamb, Op. 30: VI. For the flowers are great blessings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd67dbec69662efb706f813ab81af69a6249e2fc96a967dfe2dc9244df748be. 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/GBLWD9700310.
Rejoice in the Lamb, Op. 30: VII. For I am under the same accusation with my Saviour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db2d6c19533c74ee472a3a22117447dca8f9c53170bc89b39a996fb3a52b0c5. 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/GBLWD9700311.
Rejoice in the Lamb, Op. 30: IX. For the instruments are by their rhimes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dab3d9bab91067d8407d06580e0432a2868c3da3036e2ce6b3481fb36128d0. 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/GBLWD9700313.
Rejoice in the Lamb, Op. 30: III. Hallelujah from the heart of God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88047e793f92c53b6cc452172c4d9bf5d00cc7e79e5b8694ad633a1727539d03. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBLWD9700307.
Rejoice in the Lamb, Op. 30: IV. For I will consider my Cat Jeoffry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869620c21b6edaedf7e5cd2388a7804c7ed400ba821457749465a496d4e10615. 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/GBLWD9700308.
Rejoice in the Lamb, Op. 30: V. For the Mouse is a creature of great personal valour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85807965173b3ac082d7fc00e9f759815137bb5a98a9f0175d5796c3cdcbd6e2. 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/GBLWD9700309.
Rejoice in the Lamb, Op. 30: X. Hallelujah from the heart of God
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fd375509e9b9d2ae0d405f303833a14fa1a102067d362fa20852413effef26. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLWD9700314.
Stravinsky: The Rite of Spring - The Nightingale
Le sacre du printemps (The Rite of Spring): Part II (The Sacrifice): Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a86139b85d521e782281828a39d95c42571662fc82c89df7aaf503671c482c. 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/HKI190473707.
Le rossignol (The Nightingale): Scene 1 (The Forest at Dawn): Nightingale's Aria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c4d1c6d081f17a65369fa4c922e4215c7e50b3d147e6083c417bcd6ef9ed3b. 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/HKI190504315.
Stravinsky: Le sacre du printemps et Le rossignol