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 0x1b12f093afc1d638ad8ec914b3d7d51f249e247836671755241f5d78472af981. 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/a22b902e-3784-499b-82b5-1c201e03d3e8.json and https://artists.proofprofile.net/proofs/artist/a22b902e-3784-499b-82b5-1c201e03d3e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Guitar Hymns - The Worship Collection, Volume Two
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 0x04bab6e6aeb50d847eac32322b3796df4b103a3363eec005356d47049074eae5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:09Z), 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/GBLFP1757809.
Guitar Hymns - The Worship Collection, Volume One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922a5487c2f2ba7418c54625001406296774580fcb72da75aeb95d2979c21c3d. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/UK5JC1400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f56e7b11ed8ebd4d6b58085d5f5f2d65ffb1c2835a52138ad10d6e1adcd8367. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:22:27Z), 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/UK5JC1400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efe76175267260e1a8aafb8c50b78ec95bebb8f959fc51bbbc05602dc048057. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UK5JC1400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc347c7f227d448d5d804485b1698fc6adb25a0dbf047f609e9386da4279cd1eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK5JC1400530.
Top 20 Children's Hymns and Songs (Backing Tracks)
Top 20 Children's Hymns and Songs (Sing-Along)
We Plough the Fields and Scatter (Wir Pflugen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331357e6065393d8de155bd23ac7e4ae9356ec1fa94ae4af5e578d1c716a70ca. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/UK5JC1400178.
Love Divine, All Loves Excelling (Blaenwern)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f6ec7e512658f99343bb863afa8867c14ee20768246da29efeb68e3dda76c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/UK5JC1400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541a402563fed6c0eaa86325231fe851efd0a6387ab9f74915a9857a5289cde4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5JC1400181.
Alleluia, Alleluia, Give Thanks to the Risen Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd796a723efcf83bf8f6a68f6ce22e6519f30f1609cc2b15b92a0e3ae681dfacd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5JC1400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93192bf5fb5dda3fe8285cad1a0fa386432ddcd5c15aedecac630f3405cbe1c2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UK5JC1400184.
Guide Me, O Thou Great Redeemer (Cwm Rhondda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b813eda58c3c0cc89a7b94808a3393474851dfb6d8c10323427ad2a8a434cbb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UK5JC1400186.
Jesus Christ Is Risen Today (Easter Hymn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b95fa69173de44302ae876fe446f2e6d9487a1d20f21a4e163ff6b80a3b81. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/UK5JC1400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d02925bd02406f15c7565e22eb8e41ac68471caac783e8ba1a802f87ee72ab1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/UK5JC1400190.
O Come, O Come, Emmanuel (Veni Emmanuel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8975125b95b06a0335b46ba87dd4a138df789703bfda4ecc9c2804e24c4a29e9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:57Z), 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/UK5JC1400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7eb7ecb7e007bf78d7794d224d6412e9b692b84ca85d3001950b633725dfbc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UK5JC1400194.
Hymns on Harp - The Worship Collection, Vol. 1
The Church Pianist - Worship Collection, Vol. 1
Guitar Hymns - The Worship Collection, Vol. 1
The Church Pianist - Worship Collection, Vol. 2
Guitar Hymns - The Worship Collection, Vol. 2
Hymns on Harp - The Worship Collection, Vol. 2
Hymns on Harp - The Wedding Collection, Vol. 1
Guitar Hymns - The Wedding Collection, Vol. 1
The Church Organist - Favourite Christmas Carols
The School Pianist - Hymns and Songs, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09902cd22e792c74fa5a37ba4cd6dbac34289f3b83b39d035b1ab1d10c476cc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UK5JC1400699.
The School Assembly Music Group, Vol. 1 - Hymns & Songs
The School Assembly Music Group, Vol. 3 (Easter Hymns & Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553798eb202583220908a309c58b7ae036dad1029dbb42215720c68eb25a7992. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QT62U2549790.