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 0xf840998287e48e6e1aa865433c61b213ab4135b1fc551f4ec52a422072ae0967. 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/d197b61c-1f24-4a4b-bd78-8648e63de406.json and https://artists.proofprofile.net/proofs/artist/d197b61c-1f24-4a4b-bd78-8648e63de406.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eeaec9cd9afc2d80a96314ae99e38dd44b595f2a0a5b3e714122b8564f503c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:35:58Z), 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/NLE320800219.
Een Kind Zonder Moeder / Ik Droom Elke Nacht
Ik Speel Een Lied Voor Hem / Klein Klokje
Zomaar 'n Dag in September / Schoenenpoetser van Santiago
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7d2dc75714798ba0633443127001a6975c2e6e4b1fa7741140a600e99fbdc9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/NLE320800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc223bf14a55b46c4f344c562ed4bc811439a158dcca288555f5fe7eb548cd. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/NLE320800207.
Ik Heb Vandaag de Zon Besteld / 't Afscheid
Charlie Chaplin / Ik Hou Nog Steeds Van Jou
Liefde Doet Soms Pijn / Jij Weet Heel Goed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8502d41b326106e286764fa14074a3cb01af6706de3ca36baaf33e7845d5e337. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLE320700035.
Zonder Liefde, Zonder Toekomst, Zonder Hoop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1202df59ec2a1e585d9501381bd9b8850eac04aeec2a83e054bb35e2099faa. 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/NLE870667102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4979a8bfa55e38c4c647b4216a37ac5ca4fbe609951e01e124dc98244c7c7b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/NLE320900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a526de076561588ad434ca54240655863df1344dc9086770b494a833576e9a. 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/NLE320800196.
Heerlijk Hollands - Het Allerbeste Van Mieke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592861add9808c32e363cb797b794c21ee187eaa80369bfdfca83d50135fcb08. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:37:03Z), 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/NLE320800316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a43ff0dd5841a3cf46ca9abc24d344ba1fa4119f590fde05063f32befebd0ae. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:48:40Z), 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/NLS241201946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7ababcb67ef7ceb9f3f6a2202fa060073ead4c7fda5441fa4b2c48497b3d54. 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/NLS241201957.
Het kan nooit, nee nooit, zo donker zijn
Nooit Meer Oorlog No More War Plus Jamais De Guerre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2e029d2227cf905be4d681c53139091555f7ce824fc79bd97f22b73fe3ddf3. 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/NLE320900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a954920634f6f3ab0b143f7a3ff6c7dc51769018cf9cf672a7ddbbfb182b2f6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEZ281800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e7111b533b1e7bf409681ba5e433d1e97f79b7ebe49eb16ebfa4d3b6322677. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BEZ281500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb4123dda2ebd0a785b2717f86e2905a29754b19877d4af509dc54cdb830bb2. 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/BEZ281400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4056d0c5ec6fe18d3f453ceab0413003d7e6a83c9ba91b6c4bafc541e2ff9a0. 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/BEZ281500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f08c42b3d78daf92ffb02ecbe0b1649d878c1ed922c724ab5ddd982044bb8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:52:45Z), 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/BEZ281500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c21babedd9d510301f19e283cf729e1981384694cc889ad09ff2a128ddb672f. 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/NLN352200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4056d0c5ec6fe18d3f453ceab0413003d7e6a83c9ba91b6c4bafc541e2ff9a0. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:25:51Z), 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/BEZ281500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab934f3b02013a689ac9da2d99bc31f104f2c9667fa2fa9a434485def8355f6. 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/BEZ281200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f720fa68bf4b04c4a46af6818bff17c8cd0c2a014446d53faa8efb2a861640. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BEZ282300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ed4261f69d65a5e1bd923ae0c07f6e8de4ff5a90503588099236c02866070. 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/NLN352200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f231621ee902eb70ed6a9773e5b5702df37ed8347da7058577b03011df39e7. 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/BEZ281200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c3c4b82b380b30a6d76d21127e1780b4766a926eefc5c619db3028f0f9bdd0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEZ281800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaecf3c4d0464514526dc9aea2695594ad4c4892de23fbf4c5d3b9bb2d7079dc. 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/NLE320500075.
Zijn 50 Allergrootste Hits - Jo Vally wordt 50 en presenteert 30 jaar Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c858afaa54907af770bedafb517468844ba343e099dfca2432472d40db0bdb9. 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/BEK019900331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d62a9a35ca2cda8f1a6e890c18e5311eea9a25dc6e2ef8c416ea4dd40c7f95c. 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/NLE321701232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4fc57b47b0376688121705a44e1f84333ceec9bf9c90b3a4baf5739504fbaf. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NLE321701241.