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 0x2fc8dde02108cb09f2c224ffa2b74c6ff8016767913877a33a90efaae56615df. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7840536-0f23-47e3-b59b-b3f66055a055.json and https://artists.proofprofile.net/proofs/artist/f7840536-0f23-47e3-b59b-b3f66055a055.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gott des Himmels "May the Grace of Christ Our Savior"
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 0x65940483c6b0c641fba7f07f689d00368a3416921e532db4604c3e858be92fd8. 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/GBXUX0870503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499b55ca76b152f6f11acd992e5e2cf445ad8b9d857a3bf2927dceecc7d15012. 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/GBXUX0870507.
Where the Appointed Sacrifice (After Schütz's SWV 31)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e9cd80ed930f3886fb1437f718c2ed79d8582b24beefd35d2201cd9aac7e1. 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/GBXUX0870508.
Old Hundredth "All People That on Earth Do Dwell"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb754c005314f7733d5e600ba3d5d1d1b71c06e56b6974802730908643bebd8. 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/GBXUX0870509.
Ave Maris Stella "Hail, O Star That Pointest"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e10a822500cab78c041593453055005f970bee047ca3ca0745e8fce1939786. 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/GBXUX0870511.
Gelobt sei Gott "Good Christian Men, Rejoice and Sing"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485d65a3aca5b48ef387cfcb2426206c8ae9a45dcbb34f2b253687e8c7308c47. 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/GBXUX0870512.
Uffingham "Lord of All Being, Throned Afar"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fb0eb9a0b3ce959dffe9c4edb44927244d48b5be9897ea506588abb5b38dab. 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/GBXUX0870513.
Song 4 "Come, Risen Lord, and Deign to Be Our Guest"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730f462e6fae9784788b986a60789915de1363f8efc56800284173c78be09df0. 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/GBXUX0870516.
Belmont "O Dearest Lord, Thy Sacred Head"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052251d08de13aa00a4141daf164d2af76b10889d4aae7c93e96293828478227. 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/GBXUX0870519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d714293b46daeee4a52180054ac8223b0f62e5ce131ba6f478656adcef9a921. 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/GBXUX0870520.
Orientis partibus "Soldiers Who Are Christ's Below"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad04220a974f419cfe638535a2e8bdc3f16b7c2bf277ec32d4c013eb9bc69381. 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/GBXUX0870524.
Regent Square "Lord of Beauty, Thine the Splendor"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8035130c570970eedf14ab54af1780efb38011ba9ce476cb0b0f6d570f6db8f4. 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/GBXUX0870527.
Morning Hymn "Awake, My Soul, and with the Sun"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02ff7b2eea84cd75d14ff0125f8b5e823bb505aea15a4786cd7cee6ab903c39. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBXUX0870501.
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
Das neugeborne Kindelein "Now Is the Healing Time Decreed"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c05bea6fd88e91950969f02cbe2781766c3f9f56f3360424de280432130f20. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBXUX0870502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a29b75e35fd4151da7dc34f437214230695b07445191400ede45dedfbb1a44. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBXUX0870504.
St. Matthew "Thine Arm, O Lord, in Days of Old"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4497fef40074007750fceb25915d4b740a18d4f4e3eb8968f60c4d3534d4105. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBXUX0870505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc43e68bec368d60b262a133f480c64934a67c890adb63bdc9ef7dbebc1ab222. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/GBXUX0870506.
Puer nobis nascitur "Come, Thou Redeemer of the Earth"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c674abb0ac5229ac9d86bc4cc9c28e03d9ba41f9b7461d74d7f1e1f6a974b35. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBXUX0870510.
Was Lebet, was Schwebet "Worship the Lord in the Beauty of Holiness"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108b333ddb763a98868fe79c394ea3de970c6e7840b3c4720b4cb5d173d25ba4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBXUX0870515.
Merton "Hark! A Herald Voice Is Calling"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943158849f4be6a93d4330211db36c2e6e6971e2814bc5ef78349b8dcbb47ef. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/GBXUX0870518.
Horsley "There Is a Green Hill Far Away"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee70d9a9e95e9234ebe6718f7efb4093e7273d9f744127a91c2c4e2329d5d895. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBXUX0870521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3836599ccaa96370a4b6c87ccf786a8a89efdf80c11b28673845f1319ba39695. 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/GBXUX0870522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b78121ca4595cbe48ebcad05224bb289311f711fd272a9078d77c10498cd77d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBXUX0870525.