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 0x56425fe7f6caf96712a79e2337712580ddc573ede3dc894407ff9eb52155db48. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3b59b7c-4c90-45bc-9219-fa1a72407a91.json and https://artists.proofprofile.net/proofs/artist/a3b59b7c-4c90-45bc-9219-fa1a72407a91.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
He Has Heard My Voice: Psalms of Faithfulness & Hope
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 0x7a90ab025569a92f1df9b4f67478c3714dcf3b3cd0d46cae28fc66683735f19c. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0700041 — a six-check JSON result.
Thou Art My Refuge: Psalms of Salvation & Mercy
I Cried unto the Lord With My Voice (Psalm 142)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e856593f9ede462fd549a54e788abfc1b4c6bc88ed6a9af99be788dd1eb1d36. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500057 — a six-check JSON result.
Lord, Thou Art Become Gracious unto Thy Land (Psalm 85)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacefd09a7f93796d65f7d9505cbb8e50e058e8eeef28608ee18ebac0e704a164. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500058 — a six-check JSON result.
When I Was in Trouble, I Called upon the Lord (Psalm 120)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5852d8996c34b8620f758af8b538b340c22d3fb2aa7a9adb68398e93e5a7e73. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500059 — a six-check JSON result.
Unto Thee, O Lord, Will I Lift Up My Soul (Psalm 25)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef30335233c90c614a5c31a33a1e46eca2105385760aab59af3906132a37ecdd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500060 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0143de6bc6ee4919ca2930fbb3289e5f4b550e30ed99e42e61c01a9adaa1509. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500061 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e9b12220731b7fb1d5b4d05ac0bc101ed0f2de470fe9860ba8788679d1090a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500062 — a six-check JSON result.
St. Paul's Psalter: Haste Thee, O God, to Deliver Me (Psalm 70)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe94353e56a0e7015b50df16302c3cbd9d7c91c5d216d29703cffbc43285226. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500063 — a six-check JSON result.
Out of the Deep Have I Called Unto Thee, O Lord (Psalm 130)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db27b3ae15766a7b49831896b97f426bfd3a0197053279ba4246780a547ae86. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500064 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346e0ec56dd462888919433c6584cea3a757c8541b5e5e8a3594bff9cab03a8c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500065 — a six-check JSON result.
Like as the Hart Desireth the Water Brooks, So Longeth My Soul After Thee, O God (Psalm 42)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7543c1caacbb8d155f32efe3858c81350426b413fb3c5a934bf5fcba7d63f5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500066 — a six-check JSON result.
Give Sentence With Me, O God, and Defend My Cause Against the Ungodly People (Psalm 43)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40523605366313ef89f5da23783f89cc6ee5ff290662963ef48e8acdf02d572. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500071 — a six-check JSON result.
Have Mercy Upon Me, O God, After Thy Great Goodness (Psalm 51)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa314a1a36b2a0cf07e9e277bcc56ba14f6b68d567f802fc4583429b75cf31f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500067 — a six-check JSON result.
O Hear Ye This, All Ye People (Psalm 49)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831156d44696da2fc414eb0c152df7f4bda9d19bcdcaa9dcd00567b588dc0e64. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500068 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0177a531a35d032bb41eff268368c9dcb70fab12d482f83a87cd77dea17e44. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500069 — a six-check JSON result.
By the Waters of Babylon We Sat Down and Wept (Psalm 137)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7deefe04957acb1bbd8300cf63229bba40ed6c6b7c9b06b75021ee06e7200. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500070 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96ebc4f119bdc33fc7c48ef6ea7feed96a7f45af0c5c241d00571dcd35e0834. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500072 — a six-check JSON result.
I Will Give Thanks Unto thee, O Lord, With My Whole Heart (Psalm 138)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f21fe8543110ff3039a155a28880809a6b9783d79a3eb2d9f7145a2a0d8ac69. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500073 — a six-check JSON result.
How Long Wilt Thou Forget Me, O Lord, Forever? (Psalm 13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15e8ad1a7670037082c0eda273d7450691fa0933a86a4f183503cf560800d5f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500074 — a six-check JSON result.
Hear My Voice, O God, in My Prayer (Psalm 64)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5fece36531bfda60097d09232289eae43c2766303a1028a56f0c7f6940259c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500075 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cad58699378b158b3bebc0194cc9b7400afe6618997ffbd102387ed78cd73ef. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500076 — a six-check JSON result.
Blessed Is He Whose Unrighteousness Is Forgiven (Psalm 32)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be29729261b49b019898180cd2eeed3d8689490a992c319cbc80e49369956c0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5HU0500077 — a six-check JSON result.