Het Goede Doel (English: The Charity or The Good Cause) is a Dutch pop-group fronted by Henk Westbroek and Henk Temming as founding members. thumb|right|250px|Het Goede Doel in 2008 during a concert
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 0x78cceb27772af949a2d14256c0b7e32085864186df0c79e84227abadc321abc1. 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/2ae104d2-f491-4975-8787-bbf3c3c1b047.json and https://artists.proofprofile.net/proofs/artist/2ae104d2-f491-4975-8787-bbf3c3c1b047.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 0x7e9aa9f7412f6b25918d9a4f7f39635c60e80042fbc079fd2e30fc68e3380548. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NLC288200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26b10acd5108341f07934a9b9abbc26ccbed53830e3230ef0cc4d64bf57a77e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/NLC288200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269e8cbda6b92bf2626c84a10a2b26c8ea0aed67e2d4da7cc821e88b82bb7a6e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/NLC288200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5157d4354c4cd84d0ae00dcb6ef227edf0efd226815e479dcacff946f5355ca. 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/NLC288200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd41249fc560dd999ccd13b4e87db22de2638cf1e6813947a85ed4cb83854630. 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/NLC288300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c42c7507ab13bc83bda0b6240cbe30891506bc40ac15694b7ff5a3578d9439. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/NLC288300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb014c3d8611ac52d51799184248e7f2d8942125fc3f7620b4b32ae30739685b. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:53:31Z), 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/NLC288300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb74950c5d081317ed241bba79bc3831272b54ee7214c33cc65a4cb3ea94aa28. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:40:59Z), 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/NLC288300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd08f6950915a01d5c845e4c0dcf9953892bbdf66b37386230bcb1bec4a23060. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:17Z), 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/NLC288300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f990c5e2222fe02d23151ab9a09f35bb1acc18e6ca56ba51be9ac3ce349a915. 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/NLA318690009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dde336eb83aeba00b3ff938225465b8e87dc9238dabc067df6248f3b49ee6a. 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/NLA318600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd124c3688dca6e9e844008fec33fef5e21593ee55756f8fdaa6a946b78a4f2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/NLA318600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af4b47185902305a3bc6ede8a37db43880fb0efa21fd7a9fa1d31d250ab498b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLA318600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c93bbdd6a95efad46be6bd0c65a9e23a34967b1ebe7c58fe8cecfe7c847d88. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/NLA318690011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bb31abe47e5f499f38c89b91e90821cb05f65034dbe58fd5de87773b7db8ef. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:19:50Z), 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/NLC288200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e0dd66266778db49bd92e8ad92541452be133684217a687a1dda1a2427eb8e. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/NLC288200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5af7c08db3cb27f6f0692be05209d5b58b233c4c7ec6bfa3ff76332a4050fd6. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/NLC288200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c255c3756ef1fd58ef441902d4242573a31dc51dcac3e08fe7af258a2c25128. 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/NLC288200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0924ee6d2f3da0b66127ea841fdde936f5a8bd2638d28cfa1ba2367e77e1a734. 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/NLC288200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb74950c5d081317ed241bba79bc3831272b54ee7214c33cc65a4cb3ea94aa28. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLC288300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd41249fc560dd999ccd13b4e87db22de2638cf1e6813947a85ed4cb83854630. 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/NLC288300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a181fa127688f2a877972a2df724834efe5e2bd4eb83d5598e1c5bebee3e30d. 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/NLC288400196.
4 Films (Een Filmster Blijft Voor Eeuwig Leven...) - Live (1987)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc75ed6013ed5eb888809e6bf9f123ecd2b220c4f0406b3b4d2335a492de10. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLA318790011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982e977deb076de52065ac6fde7b8f60d7d288b8c8fb1f8db9fa118baa9ac6c9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NLA318790013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4c87708a0f75f1ffb5379bc8cff22c1d05707679c30e6994fb03594c507811. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/NLA318790014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f88cf31c940b44201db507e9355645a1198214a6b1a02cc70e4cad6d03200bb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:25:33Z), 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/NLA318790015.
België (Is Er Leven Op Pluto?) - Live (1982)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8488fc452699b721d74a9e1d6d46040d427bdae429b1bdcc84e9ad4f083482a8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:38Z), 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/NLA318790017.
Sinterklaas (Wie Kent Hem Niet?) - Live (1982)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027906721cab46c4909a06e1388717f410f2014f3f683fe958a788cc28297413. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:39:23Z), 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/NLA318790018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656b12dd3af085075cc01f399556bebd4de28c54a9d1ee1926e141c3ba3af40e. 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/NLA318790023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75331442528a2b995aa18f9c822cf977c13729ed9ca11da5005d5f6e62d75bd. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:26:03Z), 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/NLA318790025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14c594e5cf51c040414b4c42108915601693314c133d83a787cb7ab965cc1e7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NLA318800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9e4a251032544834d80569a6d79818364e14796b6d80c94f8f2d72bab4ec56. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:00:53Z), 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/NLUM70600750.
Tegenwoordig Wordt Weer Helemaal Als Vroeger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946aedc57c194100fb37b541adbf0a2c39caf0792064c4167fb55444929ee261. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/NLA318800022.
Een Eigen Huis (Alles Kan Een Mens Gelukkig maken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aba014a17cd73c62df3f2638337aa9160fd10a3c2bf066dc05c326b7b737b0. 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/NLA318800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5abf75fe642e6b9df855309d851c6dcab1b9efaf8248ed7c3334deccc9cd2fb. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NLA318900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da4e00b7605e40957cabd063804672e76669c66a8be5b674a9af08d6d722b7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/XX0000010639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90f01f46e9dffd2298f5081f2a9a4a5c59e3b77b060c71b82f250511ad3dd74. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/XX0000010649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd1225fb737a061536605c0cc5b2ebbf006f5eb283b3130d1cf1ae4fe871e27. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/XX0000010652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d35972f6bd96ba2e6b6ba81f8675e400c8857c0f6250d5a88f6e5759177604. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/NLA318900164.
Belgie (Is er leven op Pluto ...) - Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e19c79baea3660b294670b3888bcc1fbc7a3bef6efffeba77d3af3a77025ee. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC281200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d7623289dfca0e55bd83bd0db1e2df5d7aecc75224a20e25b82be1b4185a03. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:47:57Z), 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/NLC281200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5af7c08db3cb27f6f0692be05209d5b58b233c4c7ec6bfa3ff76332a4050fd6. 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/NLC288200011.