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 0x3b971fc7cec620b1a31e5b2761d8445a9b233892dc3d27bb170cf23f1ecbf777. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dddde710-5ff2-4e75-8adc-2e315acd6997.json and https://artists.proofprofile.net/proofs/artist/dddde710-5ff2-4e75-8adc-2e315acd6997.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Cloud Messenger, Op. 30, H. 111: Prelude - Chamber Version
Holst: The Cloud Messenger (Chamber Version)
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 0xf75e3168dedd00ffdb5c227a36dd0f9503affa4dbababc4a3721fa517ca529c9. 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/GBEBL1924101.
The Cloud Messenger, Op. 30, H. 111: O thou, who com’st from Heaven’s king - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f841ac18291808ad4dd90e1c85a43a826b257479cc065c0a04345c43aee4c62. 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/GBEBL1924102.
The Cloud Messenger, Op. 30, H. 111: In the city of the Great God - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fb9c2b35b01abe6528a4d829e63debeb497b1ace2921d2331e7d05a6ecb52c. 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/GBEBL1924103.
The Cloud Messenger, Op. 30, H. 111: Bringer of rain - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca178ee7fc26ba8692085d920a79b9040986447c3e1cf7f1748d1c542a90dec1. 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/GBEBL1924104.
The Cloud Messenger, Op. 30, H. 111: Rushing northward - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd104f860c4b937e198024c2d79ed8394e99a61a6eade138c75581cc10fb23d. 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/GBEBL1924105.
The Cloud Messenger, Op. 30, H. 111: Thou hast reached the snowy peaks - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d900221511a804f0bd11c47bae234ce77c9b8826a5e38dbb3c4977c3979d0b. 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/GBEBL1924112.
The Cloud Messenger, Op. 30, H. 111: And see! The Great God himself - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103a30d0ccd2eb3cced1fc8c6f3e70b09f26dbed21c9ee762ef9fc02d4a4b9b0. 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/GBEBL1924113.
An English Requiem: I. Blessed are they that mourn - Version with Piano Duo Accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672175bf0d3cb33623d3cec8fbe1613723a3dd1d1caa8941b4a1c9c4eb63da68. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBEBL1719501.
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
An English Requiem: II. Behold, all flesh is as the grass - Version with Piano Duo Accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7915687eb78e650aaa3cdc5b43b1ffdae0ae9f390f9746cfb08656ca8e8c5a31. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBEBL1719502.
An English Requiem: IV. How lovely is Thy dwelling place - Version with Piano Duo Accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9845f69188fee90f6582b9e97ae7978e996bc1a5208c62d8fcebe319b3ddb56a. 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/GBEBL1719504.
An English Requiem: III. Lord, make me to know the measure of my days - Version with Piano Duo Accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803ee705f47451f65627a19a3a475553ac81aeaf47e46688b172ecf32971ed70. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEBL1719503.
An English Requiem: V. Ye now are sorrowful - Version with Piano Duo Accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184c03fb42e7949005590a0af62615d22af7a778ac23ecd163f378714eebc7fd. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBEBL1719505.
An English Requiem: VI. Here on earth have we no continuing place - Version with Piano Duo Accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf508c551c679e40443137019b2255eabd54ee6ba8ffdd398b4b5e97b02fbc992. 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/GBEBL1719506.
An English Requiem: VII. Blessed are the dead which die in the Lord - Version with Piano Duo Accompaniment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e908ab9d37b97e83969f4c07264fa356d02f04d1d776e79c46708f4aa083390. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBEBL1719507.
The Cloud Messenger, Op. 30, H. 111: See how all greet thee - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc553e0961990c38280430f4787fd9098461387c4d4fdd03df31365f9baad9a35. 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/GBEBL1924106.
The Cloud Messenger, Op. 30, H. 111: Behold the villages - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f20bf1fc0ae8219145bcc5c1b492afb7ff7fed74b8fdbe4892653c30e3420bc. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBEBL1924107.
The Cloud Messenger, Op. 30, H. 111: As the rain descends - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8efa7b1b0d66e6db8587d8089e79861c192413b686254f24ab4e51bc1b53f4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEBL1924108.
The Cloud Messenger, Op. 30, H. 111: Tarry not, O cloud, tarry not - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5edfdfb16199f2cc0e6e97455fa10530553e1612f6b000dc2cec46c08fa3263. 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/GBEBL1924109.
The Cloud Messenger, Op. 30, H. 111: Tarry not, O cloud - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ce3fd6ea25ca74153b016be090843d41025ae3b11a29ee9b0ca2a587ea042f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBEBL1924110.
The Cloud Messenger, Op. 30, H. 111: And hark! - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af1a568365aded9c220d1a27d31994c7b4a8bcb830fa23998854d11e5654538. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBEBL1924111.