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 0x7a038eae88ef3763cd2310fa11c9340259c47fb7f17226d17e3407c45e56df92. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/296936c5-ad98-4e94-ad2e-20a5d0f9dfc2.json and https://artists.proofprofile.net/proofs/artist/296936c5-ad98-4e94-ad2e-20a5d0f9dfc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orvad, H.: Choral Works (Corona) - Vega / Kornell / Threna / Paschal Hymn / Winter Organ
Classical Music for the Christmas Holiday, Vol. 1
The Secret Mass: Choral Works by Frank Martin & Bohuslav Martinů
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 0x36d577d0d2587aeb1b8c03297bc74a88c7c98b3445256f98d5fa6e11bd5acf1b. 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/DKHJ61800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354528b58900e4e9a1ab79d95f808769b344ea97e7e9f6c339bd8ccaa97efd3f. 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/DKHJ61800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae015d86038a066b40a0475ae90780305249b12e0f12da1ed88c0f174dfe09. 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/DKHJ61800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cec11897e389139da95f1d459088552106f179fed8e7e2902e7aa46ce2e5b5. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DKHJ61800102.
The Nightingale: 4 New Works for Recorder and Choir
Lamb, Siobhan: The Nightingale & the Rose
The Mother, Op. 41, FS 94, Scene 1: No. 2, Tågen letter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cbcef34b9f37c16209df71e25389b59e2aa92a511a41ab8c21bc25eaad654d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKFAA2001404.
The Mother, Op. 41, FS 94, Appendix (Excerpts Arr. C. Nielsen): No. 13, Brudstykker af de krigsførende landes nationalmelodier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3018d0ac6b5094ce6b7c9925258f1cfc27d9e8d65c5601db9aaa80297cb68bae. 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/DKFAA2001417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f6a1505adef819f90f9f3394acbc49e558513c5a37eeee32560e137167a9c. 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/DEU901501323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076021ce3b97ab365bd9efd96bc3a4415ab650475428f4ce0dcc48dda8357d66. 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/DEU901501325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bfe54182112c779b3cd599808c34725d1199db8ff35e1d67a4b3c4c7b484ba. 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/DEU901501326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa160565ba02ce7df7907070baa636ad285dae4efac37c933ec7d093c7c13d9fa. 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/DEU901501329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ef4103490bc048b74a20ada2f2b6a5ab090dd5b272f664088bf9eb7484365. 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/DEU901501330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db7952415bd0154e5805b591473e0fb9a3e6d3b4327ceecb2835c60afa342a. 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/DEU901501331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558aa9fd405894fee4d47a82cce873198e3ed5234874168206cf26c87e8d530f. 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/DEU901501332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9270187cd1c3bdb400c59e091fb4c1645a5540fcec194150575194d3d2d15df. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEU901501334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f827757ff2dcc531ebcf1ef4c3cb52ca0648e9316f8d476ae4c8f3a854bde. 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/DEU901501328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf511fc28fef03051098e58dd162d7de6ec3b3e85341a2f4d99c485ffd4239d83. 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/DKFAA1502110.
Music of the Spheres, BVN 128: IV. Like the Refraction of Sunbeams in the Waves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06852f43a372e2250dd48d93cf54bf2b7efe343a48f6cfa10df7e62c2ce691a6. 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/DFFAA1001304.
Music of the Spheres, BVN 128: XI. Glimpse of the Sun Through Tears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10623dafcc026300cab4d4516441280f3735f394dd523840fe8949f0f425a822. 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/DFFAA1001311.
Dromte mig en drom i nat (arr. M. Bojesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e65aabbb6330d24655818c8c05c2ae7e7022ca4547964c41478e3048ae2fa6c. 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/DKHJ61200401.
Et hav, der vugger sig til ro nu (arr. M. Bojesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8948eb3a7bdcb55bd29259d1b927cc8f553f429c9bfa99e315909b079e78d2b. 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/DKHJ61200418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c138f857924461083094a6edd580aab9c8c5b987ca391878d570e7683176e11. 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/DKHJ61200414.
Om lidt bli'r her stille (arr. M. Bojesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7169eb36ceefbab77703f8ff2164952c98988e2f4b85257e555970daf51c400. 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/DKHJ61200422.
Langgaard, R.: Symphonies Nos. 15, "Sostormen" and 16, "Syndflod Af Sol"