Negu Gorriak (Basque for "Red Winters" or "Severe/Harsh Winters") were an underground group from the Basque Country. Their musical style combines various styles such as hardcore punk, hip-hop, ska, an
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 0xc37cb4b9ab0ce071b0eec22997c59d33fc55ca303caf99a725f282bb7fafbd85. 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/ca796bcb-8d18-42de-bf8a-e31282bcc675.json and https://artists.proofprofile.net/proofs/artist/ca796bcb-8d18-42de-bf8a-e31282bcc675.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 0xb34e468dcaf7901c55de8c1861757218d51fc833ade44bf2bfe1fdbd62319717. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/ES5591100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70452516dc7772366a219a3bfaece88ffea8c5ce73144dfc2af3daf790420b6. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ES5591100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb086549ad66128064a1d7cf7bab5a483461448c5da5a62e5e433e5c2811d8460. 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/ES5591100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995923d854d9310aa7009a4034e16e8ce9ea600907eff0030eadc99c0a8c59bb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:32Z), 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/ES5591100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41096fe89e9793a57d58af36f6f84c58c9dba97611b20ba34cd16c8c2d45793. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5591100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b673fe2e1ac1669c6d98d92b315b9972ec57130ef1cbf0ec50fdf963a5c766. 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/ES5591100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6e6a6a6d576abf1473bcbe60bb8aa02dae93da95113f35605c819b91c76894. 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/ES5591100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594e24311ca466d4b6dd9ed01df79d65806494a25b359f8f5fe34e6167d2a529. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES5591100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf1e146ccff61b698c8028a2782b2b0e3b687afaf5ec83d30298facd9a876dd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5591100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6dd777b18b4de93798f361b8a25d93f46f28df0424f1f0e39c5b4afc115981. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:05Z), 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/ES5591100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef40860bc4456ea521b80201784ec67597bed52cfb645bc2acc15764d7b5851. 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/ES5591100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09726b72210a94e620219617ca4ea81ddfe06a3cca005e0bdb23d5d7eacca249. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:12:14Z), 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/ES5591100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beff0f25280b505332b2c6cc272a47c6965516722193ce55698997de7b62f3c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5591100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432271a41ca670494ad089ae2506a0866892b97373d01b39841b8a2ece94077. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:24:17Z), 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/ES5591100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa806fa0d6a7efca25da9f3b9133c1b61214e75490a22e25f908f048fee80decb. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/ES5591100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01246ef9adac227421fb3fc127574581bcafbcd9b56a90eb72cf2c7444404953. 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/ES5591100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816b059bd299ab8528da3db305652a052c7b116707423c7408491910ab39ae1e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:24Z), 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/ES5591100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63b1f9ad6797522d2027f495f8f8e99f700491652ca537da3bd8da8cd912dda. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ES5591100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce14b54bfb416bfdf1df076f9aef8b15f78e76232e7e40114cb86a19e34f4cf5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES5591100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afe0c26153b4ef8dfac6b7c2c343679a61444b1cde2e38c2863a10d915cce26. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ES5591100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f91956376577420f2b9acb9c182722dffe9b52cfc6d984bbe4166909e19957. 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/ES5591100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac64e8433aacdf2fa227cc2f2f858f94ecff35ef8e42c7692624a312350a14a2. 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/ES5591100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c7e0119f572bfd37d05864d6ad3fadf1ead3f3e0970b18cc277873e9576c82. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:59:18Z), 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/ES5591100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a773a3c7cc34eaf35cc4430ba359e9472d0e92ffc6e36001a92ee1d92e9d68c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ES5591100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e44bc9d9ed6188f3fb3c2b9cb4f1c15289f43cf364272ea8efee2d299b0ef1. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ES5591100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543b6693615b15db415831493f6a3e84074f58129196caac1f4eb6472a4cd9fe. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ES5591100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1fad9d0fbd505e8ea130401bd507f4144863f4a0d06f905df42cd775dbedab. 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/ES5591100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f208003cfe5fbe55b331143ee37d2bc959073176198bac53d11391bbcdb363. 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/ES5591100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd7c4806f78505b182cab57e35bb02420d3efe6fd0617e309d12d3337551698. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ES5591100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be60442a0965eee9db2a7075332a9067754dd42c2d1011f030e35e288875c76. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ES5591100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f886a9fe6709d9b2f6604ccdee9e9d19241cc144a5ec78d4360efa54b18ce. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:24:43Z), 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/ES5591100162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf407d4c5e77365c0107755a91b4bda2cf2814c0ced491f9ed2ab7649d746ad4f. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ES5591100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d61af4fa08882e9d217c0546729814168cfc207a4480cab6947e77ef9c6968. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:47Z), 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/ES5591100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef0ff9d7a3359857609f17bcb64febb11650f336e99da291a7a514054e6aa88. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:12:40Z), 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/ES5591100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0093b9b5494b3119b08b02a2b6c8f6cc7355ed08fe6a2b4235a851b9ce6a7c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES5591100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72792a1b54f425d8cf34573f626cd47f7d7b6782d01658a4f77a342eeb61c232. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES5591100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8633d358d602ae9e59f303af96aebc20094ce82d2cab2fe4c738062d0d136570. 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/ES5591100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba281d69b58f6db9d6aeee8f82b5e0d1a78d6ac846d0f69dc4fc8454ef381d8. 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/ES6720500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3f70111f461822ddd89bac02c4914aca511bfe88275fd0aa5adddf5ecaf8e4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ES6720500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf5d4c7a76dbe79a1a6616b0aecf2fc27af0c2b4aa28195a8c192b2736be7a8. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ES6720500661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531b7e4be2b39134a58d504ba7df943b328b47882ff4efcad5a2dd28beba65b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES6720500663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c83899a3a4fe1c1b508f02412d3502aa0e938d31b2f910122bd1fce8a435c. 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/ES6720500666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ff438e15a83542f8088de0d76690be8707ca9552ce0684a148cda2204a75c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5591100186.