Sarah Macdonald may refer to: Sarah MacDonald (musician), Canadian-born organist and conductor, living in the UK Sarah Macdonald (journalist), Australian journalist, author and radio presenter Sarah
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 0x3f4b60602b377e697a66ef2c020a997419c94a1d51de27469fcde2d556a2753a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e9fbff4-97b6-4519-b5f4-6200e62bb720.json and https://artists.proofprofile.net/proofs/artist/6e9fbff4-97b6-4519-b5f4-6200e62bb720.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Garment of Holiness. Choral and Organ Music by Iain Quinn
The Chapel Choir of Selwyn College, Cambridge
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 0x2aa2d6452583d90c589650e6170e25fb3f0582e164d00fc6c9bf7631b906e27b. 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/GB7WZ1950313.
All Angels Cry Aloud - Liturgical Choral Works of John Hosking
O Come, Emmanuel | Music for Advent and Christmas by Alan Bullard
The Complete New English Hymnal, Vol. 14
London New "God Moves in a Mysterious Way"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9cceb7440478a5562e938464d3eadafa77007bef7977df6d9bf4ea034a200d. 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/GBXUX0871407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28787b115f550589c7921cc9af2bbeb23ce4dd0f444ccee4a666d39c10d943a9. 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/GBXUX0871416.
St. Albinus "Jesus Lives! Thy Terrors Now"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fab653100e00481ce7c3398abce7d6185aaf9e0648a46b1415cdd5637dc83e. 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/GBXUX0871418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8da2e55d3c21b026f705357a90de17a091743835eada9c0adc212bd991e5b0c. 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/GBXUX0871420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6448fd2b614b28005e1affa5b9b4c316a851a158d407dad721935b38cca49142. 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/GBXUX0871422.
Jesu Corona "O Kind Creator, Bow Thine Ear" (Arr. R. Vaughan Williams for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4657eeeac4e0a08ef7473cc6b7a3925be04f649ec6fe4f1eb7c82bf59b535d6a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBXUX0871406.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60089f7ea667fd4cf28bf142b4b9585362cceb24bafbac693ea9ce63b7f10abe. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GBXUX0871401.
Tallis' Ordinal "O Holy Spirit, Lord of Grace"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f910780b459a581d315bf20cfb7ca0b3225bb66da12e59b006d20a328c7f3a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBXUX0871403.
Belgrave "When All Thy Mercies, O My God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cac5334f2749f1b0867a9500068dab4228e059cb4b26fa8d5ec2c712595f8b8. 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/GBXUX0871405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5263905ce754ed9e55e52028aa7f146cb9b5fc8240abe9790b4d424c621f23. 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/GBXUX0871411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbc03ec35df0df4d4c790b86f70c2b26d703fd01b9b7de83d7c15a264d74e3f. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBXUX0871414.
Batty "Sweet the Moments, Rich in Blessing"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e46b022a79c78f0fd99207f1ce492560061e3d921566f2de1212db16f6ac5f7. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBXUX0871417.
Cross of Jesus "Come, Thou Long Expected Jesus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c921483635bd452d71061df857c9e01537e19036cf07805f681402e40f154cd. 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/GBXUX0871419.