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 0x88c219106f49f9503e6ea14ec6d291219e3792cd283d3f16e6052b5f530a84a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57af226e-8687-4b3a-8e38-3a550b1466ed.json and https://artists.proofprofile.net/proofs/artist/57af226e-8687-4b3a-8e38-3a550b1466ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Inspirational Panpipes and Organ Concert
Glory Be to God the Father - Instrumental Organ Solo
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 0xa0a1c20ecc58130a52bd1e6a907654d65cbf4bccd0894088e5f05a69fea15138. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NLG620602668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd292f589397bff634bdbcccc70dfce2fbb094a8fe60312dbc7ca792eba01fdb. 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/NLG620600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6903ea3765fb83bcfc0b287bd4f90ca839e4fe46f76763cf3eec65e7304f4521. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLG620600119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70926010eabd647c41e0a4beaa39d002eb330499d2c9f7ac5a57675380ff8a7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLG620600123.
Lied van Mozes en Mirjam (Live) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97911d965effbf997c43e7b14875a570a4d52eeccfe3866e66cb3c11ee8cc379. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:16:43Z), 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/NLG620600125.
Ere zij aan God de Vader-Orgelsolo (Live) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb503056a9ed21623ed2d3e54e6436e9e4311aa7e1141bace7d3e3100042b1cc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG620600127.
Messiah, HWV 56: Hallelujah (Live) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96bcbc082e7d68faf35fe880870e41f41cc271544abf5e94437feb42ef63458. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:52:53Z), 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/NLG620600128.
Geprezen zij de Heer, (Abide with me), Deel 1
Elk uur, elk ogenblik (I Need Thee Every Hour) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b8b4b2d07970d2996500b1c895afa04cbb7da6d0f5dc9f28b6bb96a571cf1d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLG620588349.
Abba Vader ( Abba Father) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d05fa3af950a40e52532b9dc47cbfb1f7e236830f516a79dae16b15d1a92b75. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:24:48Z), 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/NLG620588351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728b12a4c0a875429484cc5522e87a5e7bf2e4a9f31d39cfc87cdde296f2fa85. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:13Z), 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/NLG620588355.
Geprezen zij de Heer, (Abide with me), Deel 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadae903365747e7d6ec21fd80ab469b85ecff204eaef601d6cb3e6a88c706a9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:17Z), 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/NLG620588361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3a8747541d64ad61f59c67d0502ce483d5a906d9be19f3eb38ab14d6875b83. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLG620588362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e0220147b2eb903af0df96e5bb4a2410aa75f17b963ce677427d467243caa2. 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/NLG620588375.
Praise Anthem (Machtige God, Sterke Rots)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d79c5657775f884640d555a237d0fc934242877f6700ded2abfd10eb300627f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:05:06Z), 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/NLG620582469.
Be Still (Wees Stil Voor Het Aangezicht Van God)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb0127aa1c470293e7504050527faed14ab4fc024c5f297c864e840d94d21ba. 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/NLG620582470.
There Is None Like You (Niemand Is Als U)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c4959d9aeff380555613cb7be9f8598a933fd9cfc58f35773d213a444028fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLG620582471.
Tu sei la mia vita (Heer U bent mijn leven)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c8f13e8aebbeb35dcb69d9cf75e930c3eb5b05d96614ac25081f22d20b4039. 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/NLG620582473.
Power of Your Love (De Kracht Van Uw Liefde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdef3c8fb280b6923e27c503e08edb11c821aabe7ce62bb16d78630d3761c9c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLG620582477.
From Heaven You Came (Hij Kwam Bij Ons Heel Gewoon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4484f4611535e049bafd613829c1e03568814443f6b066ff55e3341ac93d94e2. 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/NLG620582480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c71602158b975d161e02d51e16f36576ba281f33301a688d30e42e7c53a2bd7. 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/NLG620582482.
Christelijk Mannenkoor Soli Deo Gloria Urk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0091154a518b789ec93a257f65da9d7dd61f4e14074d423e970542557db41cde. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USX9P2009580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a24ee3ea9ae1a31f21660e8072b1bc648a5bed2923bd9b6282b286d88e1a15. 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/USX9P2009582.
Op Vleugels Gedragen: Instrumentale klanken ter Bemoediging
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc7164f936b0a6f4e3ea5e0e7f8e7c514f23d275594173ee5dd668111845e4d. 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/QMBZ91612791.
God heb ik lief (Psalm 116) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4760f69ca3ba50039c05d987a94b67699efe13dd1c1ea1e605cbd71364a49c36. 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/QMBZ91612793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2606ff57d60d28c6c15c71d5ce248cd1ad8d756c06faa279d4524ac7e6a518da. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMBZ91612795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4a1fa4283013b740c023a8f9fd260d693ae7d612bf94a299ff1fc2b1adbc43. 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/QMBZ91612814.
De dag door Uwe gunst ontvangen - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472fc3593cfdc03e1bc69ac6c5c9617f2755da5313c8bdcd6114365c1d95b249. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMBZ91612820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3695060b6b70e2409e110264db1bfc4c9f8ad6dae6188c5bb039e29a660abb37. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QMBZ91612817.
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
Christelijke Gemengde Zangvereniging "Looft den Heer"
Lam van God - Liederen rondom Passie & Pasen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac479a5e80990afc3edc34796a0121f6245fe61f4b264258a4651bc0488523a7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY8X1803095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb842cd9d9eae89c1b5d95994d0369d54ea2dee28df445b57280c798df756d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLY8X1803113.