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 0x86f869067b4bb6b20b2750354688df5f1d96c5fe9e275f38da92877d41b990f9. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4413f14-7dd4-4e51-85e5-0cb307348e12.json and https://artists.proofprofile.net/proofs/artist/c4413f14-7dd4-4e51-85e5-0cb307348e12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
God Wijst De Weg: Instrumentaal Kerkconcert
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 0x8de2fdf04a6ea0f02181c12ffe375e21ad0f34d50ffcb5be88ddeafd13ea8ca3. 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/NLG620611710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92001e4db817bcba21f83720d4c021e893eee5f2abd5d1cfd01720c7a818d944. 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/NLG620611713.
Op Vleugels Gedragen: Instrumentale klanken ter Bemoediging
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc7164f936b0a6f4e3ea5e0e7f8e7c514f23d275594173ee5dd668111845e4d. 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/QMBZ91612791.
Jezus leeft in eeuwigheid - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0f31b4dd680590b00109ee9f06e1bec0643291d312ff194e87a16aaa5b157. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ91612792.
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.
Wat zal de wereld mooi zijn op die dag - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54f7bb16bb495fd93d533ae7129921e74f8bdb5610471610c188caae39721c8. 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/QMBZ91612794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2606ff57d60d28c6c15c71d5ce248cd1ad8d756c06faa279d4524ac7e6a518da. 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/QMBZ91612795.
Gij die alle sterren houdt - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b544e12f8a25f70d7186201a7b734f7faba41f0e7b324a1c98c62a0365d91cc. 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/QMBZ91612796.
Heer ik hoor van rijke zegen - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33483d24345441bf875dc55f114e447bb306afab1c3b6d8ef1b88c8b47313b1f. 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/QMBZ91612797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7609795321f4352a244db09cc7567d7dc43ec9c5af4da5134bede8ee7da3cd67. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMBZ91612798.
Een vaste burg is onze God - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189ef07c240a8bf0fafd42d5161f5f2743b5c06b2cd9824feab40d176f45106c. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QMBZ91612799.
Voor de allerhoogste Heer - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b859b2c13926cd0c79d9ced0e890dbec7b0e37dfb890d3df71afef15e4c3eb6. 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/QMBZ91612800.
Prijs, mijn ziel, de Hemelkoning - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258eecb432b5499749c99d59ee60ef6cf6e43117500eda9c8e7d8ea11027ec0a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:38:44Z), 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/QMBZ91612801.
Hoe lieflijk, hoe goed (Psalm 84) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7c27f14fed4245b80e14588fd5d57ce060cab7258746cebae8ee6a5ac74a5a. 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/QMBZ91612802.
Soms groet een licht van vreugde - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706f2627b73e96fcac5d976a6de3344cac183562dbf2692dbee533d564d67ffe. 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/QMBZ91612803.
Als ik het wond're kruis aanschouw - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dacc94762d38e17c87aa7a98f1d7b1a6cb2d6a5cfd8a2b3f668490c16c9a68. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMBZ91612808.
Je hoeft niet bang te zijn - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2814313f8f388e1b16a3a955947a6ddea4b2bb2291b7e948ef6ae48e23a4999a. 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/QMBZ91612809.
Neem mijn leven laat het Heer - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753288d77caf3d7ee8b8f8156b7a7f53490c6c0e19cdfd972fd4cb899489f974. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91612811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48e1a4c61b0259948dd6d48a4f0810bb1adae6c3e0a7dc93dc04f668e8176d0. 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/QMBZ91612812.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f71eb9a5a99b44c2a3c4aeba6c0e7094506e469aa6b276559e7a00000335af8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBZ91612816.
Stil maar wacht maar alles wordt nieuw - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed76970d62796868d9cbc1f72358a425c33755a98c3d92f1559d747c60a487a. 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/QMBZ91612818.
Post voor jou!: Liedjes over het Oude Testament
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ae5745c526a2137254bc5a48e517eee68a31efc69187991e5f72da102204f8. 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/NLG620616336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93f601394edcc9fa981ae6f2ca14c58e181cb21d73ea7183f4c2478c62546ab. 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/NLG620616345.
Carried on Wings: Inspirational Melodies