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 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 0xe7c163ca53af1bdd71294028c7139eba5bacff08d6b69052839d03d71c27dff3. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eeea8cdb-2245-4f3c-bd03-050f3743621c.json and https://artists.proofprofile.net/proofs/artist/eeea8cdb-2245-4f3c-bd03-050f3743621c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5579c6c9699b6779a033a98f54a511ecbfb78aa4b623b326d06c4f5e2ba88e6b. 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/NLY331111793.
Messiah, HWV 56, Pt. 1: Recitative "Comfort Ye My People"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66646ef2fe425a65fac78756d8175027e21d9c52fc6a9174947b202238cdc82. 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/NLY331111794.
Messiah, HWV 56, Pt. 1: Air "Ev'ry Valley Shall Be Exalted"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70fbb3defd96c970bd7880a94a75600ed101692063244f065788145a4ecbac7. 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/NLY331111795.
Messiah, HWV 56, Pt. 1: Chorus "And the Glory of the Lord Shall Be Revealed"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ebf9cbdd156ecce748162d8191e97ff2ed571447b510b7eaaa48f37041ccaf. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLY331111796.
Messiah, HWV 56, Pt. 1: Recitative "Thus Said the Lord of Hosts"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8ba7312f46b2cc61710da28ca3f110bad654a889a79f86f3751973db4fd6c5. 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/NLY331111797.
Messiah, HWV 56, Pt. 1: Air "But Who May Abide"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901f5cbb681bf9e0a2eaf397d6c93919ee5b200b5701427707ff7847de39a6f8. 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/NLY331111798.
Messiah, HWV 56, Pt. 1: Chorus "And He Shall Purify"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022ad0aa1e80c9e68b8c8e88e4120dfba5108f886fba1c74f4f42df6a062ef49. 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/NLY331111799.
Messiah, HWV 56, Pt. 1: Air "O Thou That Tellest"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531dc664fd393503cc4bf6d155fc2813d7dc56cd48194ea6ede014784d352b10. 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/NLY331111801.
Messiah, HWV 56, Pt. 1: Air "The People That Walked in Darkness"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a881996048a4c7a786fc56deaf00a3e0fc27c2c48c19f9cd711865c470230e. 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/NLY331111803.
Messiah, HWV 56, Pt. 1: Chorus "For Unto Us a Child Is Born"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27ae8393b08a14d5ab302b75c1b370e344c3e758b094b36db9798033253d3b. 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/NLY331111804.
Messiah, HWV 56, Pt. 1: Chorus "Glory to God in the Highest"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc5410f3d37dad6cd242566505dac3743dec14cd8dc33bc2a5cba0778dae5e7. 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/NLY331111809.
Messiah, HWV 56, Pt. 1: Chorus "His Yoke Is Easy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eb0fd838b8e14058078b0ae70211b78661ab6cfd81489036e021056580982c. 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/NLY331111813.
Messiah, HWV 56, Pt. 2: Chorus "Behold, the Lamb of God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa19b50cf83dea37133e5b3bb0a81a5b1d5fde97d7ea2b830b540b2a55218d. 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/NLY331111814.
Messiah, HWV 56, Pt. 2: Air "He Was Despised and Rejected of Men"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9441412be27916adba16924b0dd1ef12f9b22b5261b950772de6dc063aaaeb0d. 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/NLY331111815.
Messiah, HWV 56, Pt. 2: Chorus "Surely He Hath Borne Our Griefs"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59355524920db5ec5531cfa7541ae57376432bdab9d7515ecaad59515106dc5d. 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/NLY331111816.
Messiah, HWV 56, Pt. 2: Chorus "And with His Stripes We Are Healed"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51227094a278bc382cd88c29e95c9955f085e06a8013b084cf7acb10605f2e3e. 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/NLY331111817.
Messiah, HWV 56, Pt. 2: Chorus "All We Like Sheep Have Gone Astray"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad636954f651c1d3f172a40f6a036d4cf2f77d3ee1bc2567bc96d4809cd8660. 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/NLY331111818.
Messiah, HWV 56, Pt. 2: Chorus "He Trusted in God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69417853207b0a27bb2ace3d383e9f10c87d2904957d9de096c21b0c43622d5. 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/NLY331111820.
Messiah, HWV 56, Pt. 2: Chorus "Lift Up Your Heads"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa66fdae949ed5948ce30dd86cf1756d9d1e0f1edddb96152caa1d3877fd734. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLY331111825.
Messiah, HWV 56, Pt. 2: Chorus "Let All the Angels of God Worship Him"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008208640163c8a079d69cbc406ba0b465969162ad80eb8c51372ecc6385417f. 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/NLY331111827.
Messiah, HWV 56, Pt. 2: Chorus "The Lord Gave the Word"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af829708d1b7973e1fd0f9e62b00e402d2f502665b10977d571fc9a7be043aa. 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/NLY331111829.
Messiah, HWV 56, Pt. 2: Air "Thou Shalt Break Them"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b99ed88923ac2c1520c0353335bdafd3c5b8df8cd0cc6c05a220020d7f903c. 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/NLY331111835.
Messiah, HWV 56, Pt. 2: Chorus "Hallelujah!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878841bf10ea99744fe325b019efff6f5588ee3567dfd835efae4a9daaade4bd. 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/NLY331111836.