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 0x651bcf0cd8712d425352eb9790bb3262b260e14176b971f4d95dba80a1ef18bc. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf1e7c04-a128-47fa-a586-be5c6f80fce9.json and https://artists.proofprofile.net/proofs/artist/cf1e7c04-a128-47fa-a586-be5c6f80fce9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete New English Hymnal, Vol. 18
St. Helen "Lord Enthroned in Heavenly Splendour"
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 0xdb946b863e3bb04d3bc88a954ee79f09947a36afc8ae0d6a5ddfb5e357b75380. 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/GBXUX0871813.
Psalm 51 "Have Mercy on Us, Lord, for We Have Sinned"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec6f7f37f229d66a6dd121e9d2ba08d499f3ea99a076074317cb3b39f16db1d. 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/GBXUX0871814.
Martyrdom "As Pants the Hart for Cooling Streams" (Arr. R.A. Smith for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7febc8cfdf0e9c25c36b046746aa27f1ad548168d3ce36fd56d661bf041b2dea. 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/GBXUX0871817.
Kingsfold "I Heard the Voice of Jesus Say"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674eed9be2a9bdf95ece66f3f74347cce9b9a1a1b82befa505ad6d0433590c73. 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/GBXUX0871818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e9fbef0f091ea48a57ad27f732297b5d14e7ddac5d9c3001c0d7a19ab0ee42. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBXUX0871826.
Irish "Thy Kingdom Come! On Bended Knee"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0069e4642ee2a0998434840eb09309f30afad29f5ee168777aabb88ba3877ad2. 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/GBXUX0871827.
Lauda anima "Praise, My Soul, the King of Heaven"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64282382c0c39352a34ec081291ea93d12b984929e5cd7cf779c7726c6b6342c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:31Z), 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/GBXUX0871821.
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
Royal Oak "All Things Bright and Beautiful" (Arr. M. Shaw for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea0dc3fd60ec15adf3fe61f181d7936cc532289c6c403670dddcb15cad2d47e. 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/GBXUX0871809.
England's Lane "For the Beauty of the Earth" (Arr. G. Shaw for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3248158b94ddf65c6cae668c1d11ea384177de0eb51b5e92aab1056a5e338cdb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBXUX0871811.
Picardy "Let All Mortal Flesh Keep Silence" (Arr. R. Vaughan Williams for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95736c5406ddfe348e69a35dc0f979b241eb3c0ab80d06e927c2f573703a87. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBXUX0871812.
Marching "Through the Night of Doubt and Sorrow"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7ab7b9c0d6d56b60760258d9567b4997323041ccedc86f6ad40dd220ac1448. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/GBXUX0871824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda608aeb6d223d889400e85eebad35e16aaf32cb676490398ba67ba2f73f69a7. 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/GBTHM0700677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45053fa283520189d0d2c2b9fca84e26a203bf86fe5d81141d838b57c5f326c9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBTHM0700682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc154015dbdf30f1e93adf3430cde107406c0066ba2974750c9dbe0d049c2a2cd. 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/GBTHM0700683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ea1f087f22c42162881966faf1d2167652864966a2090f3c855660bfe886e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBTHM0700678.
Elgar: The Spirit Of The Lord Is Upon Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c5ec213d74cb87e867505ce19517cdadd1ebce7333b8fbc88102af5d9851fa. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBTHM0700688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127abccc14cf1dd8674abe4c5cf0a661b1d087943b958400b4860859f99214c. 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/GBCEU1459031.