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 0x9d94ffd7da080f6a3bb13f5fd3af443e628141ca3a290d1161008679f959c5d9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adbdb7bf-6d6f-4183-919f-581df34d15ba.json and https://artists.proofprofile.net/proofs/artist/adbdb7bf-6d6f-4183-919f-581df34d15ba.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 0x9ae2fcc07f5ef46dd904ecd2266a508b888aba08874a1906b8b85dcde5d41a71. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/MX2620475128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c24311713ffd8b2146d69a632df109494a1c7d4f81c6be8b80e1fbf2301a74b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:29:26Z), 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/MX2620475130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e435fc4a477cff2c2f811d927116712a1dfeaa536e9edf447d2131d7cf95a0b. 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/MX2620475132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94965f366f432d37634087b38ee596ab0f1e02d88ecba3a530d8bfda915586e1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MX2620475133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf003734c822d1d68a9eabd2fb02be13f3ae167fc44c7ea0ade606a6066ab229. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/MX2620475135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44942ee0b765f170c51681f4459366f2f58eddf043c858eafb3d82841f59bb3. 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/MX2620475144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c569b9c0537a964e1807f0b98077a361c7b8621d71ff0c0f28530677f3b77. 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/MX2620675205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f852f4757ec9b287b706134c49de2c5c9ffc5f8f6f8dea5e777d3aca3ec4cd. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:25Z), 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/MX2620675206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ad89e47fdf114ec02bad3b86af46826a300da4fcf8f017dca37d7aa9a304c. 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/MX2620675207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dde5b5460b02fd3425410de8e8c279c6420a72a47d43b54d1862005e125ba7. 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/MX2620675216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f852f4757ec9b287b706134c49de2c5c9ffc5f8f6f8dea5e777d3aca3ec4cd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MX2620675206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ad89e47fdf114ec02bad3b86af46826a300da4fcf8f017dca37d7aa9a304c. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/MX2620675207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843fc2ed9532fa676ed608367ff81bb502348679d1f8c1f580e8367a2125cffa. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/MX2620675208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd11beed4be8eac9014d7dffa29b8ac014b32622e96551d1ebcec8114c8ca02. 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/MX2620675210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78051221b099126ccf091ad6e8f43747ebc1fb33c5a7115f75d8b31379484ef1. 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/MX2620675211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501821f0ca5287e19b6243146664bca723b705a7b1a6c0e9d3ab5223c7be72d2. 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/MX2620675212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dde5b5460b02fd3425410de8e8c279c6420a72a47d43b54d1862005e125ba7. 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/MX2620675216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4997128ed2c53612a0df9350c6527eab7cafe0c7993cc20777bef2412745a8d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:24:30Z), 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/MX2620675219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b96d846523414ab6145f448bfdd3a587dcfb25335a577ab2b836cba7a23003. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:27Z), 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/MX2620775190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70eb6bc496142470c398e1f786d4c8e5d3f39a61310f54367c604966f61963b. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/MX2620775196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b034711bd0e61b60a28ce5cf600f98ae7bd446276659f43b287b6f46a95f93a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:26Z), 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/MX2620775197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90359cb38cc74165b2b736ef03293abc1702dc61d84195e2b59487fb89dcaf0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MX2620775200.
Los Recuerdos Están Hechos de Esto, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae2fcc07f5ef46dd904ecd2266a508b888aba08874a1906b8b85dcde5d41a71. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MX2620475128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e435fc4a477cff2c2f811d927116712a1dfeaa536e9edf447d2131d7cf95a0b. 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/MX2620475132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94965f366f432d37634087b38ee596ab0f1e02d88ecba3a530d8bfda915586e1. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:09:32Z), 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/MX2620475133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf003734c822d1d68a9eabd2fb02be13f3ae167fc44c7ea0ade606a6066ab229. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MX2620475135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe729cd3c9c94850ee175df94c0d7119e7de0e40319ac15d19ee3d549380b12d8. 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/MX2620475138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bf8675cd1116233f011e27efaae0db97948f84e50f46b343fd7183c1294061. 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/MX2620475139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aa0b2d6d6a3ac2eab3d663ab795bdb287ef598839aeb91ab9a7148cd501781. 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/MX2620475141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e4cda9279503c6eb1b5c36189421e6cb2a7339a1141d4742f720c87abfd3fb. 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/MX2620475143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e4e5f3498d092bb4b160c9c597be47d3d59bfcf747b6b85c01e2bf6166345. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:34Z), 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/MX2620475108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa23a7dd553d157d386861f9de2150d0464f352d4ec59d7f88c9eb1c65cd2e5. 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/MX2620475110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b3a2b3315e51f4931723872e4336b311cf05d68f9a7e58d14cba454b613cfe. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:02Z), 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/MX2620475111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c43b4952945d82d5c8e2b4dd24f61d960bb5bc109aa19b27e45a5b05afd98. 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/MX2620475112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df8207611c0cab805835352a9e4ba024be671b6645e5d876fef1167f9bce7c8. 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/MX2620475117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb17e2449e471ecbd2be1cfb2c6457599afeb6dda236c2b88462da249823b1be. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:17Z), 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/MX2620475118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cf801b8f7edd897efcd84359559913e4d65ef6dc62148e1e8d0e016f38c755. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MX2620475120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e02da3c80aae54e53e75f2995e59a542ebe32abbc5dccd31de9ebde924d9290. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:39Z), 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/MX2620475122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c2291b7ded334d9ff94cfa3263f4342fc6dba4f717598e4017afba6ea3eaaa. 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/MX2620475124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31984903d22c6fc961c4b57f912b157c924c67ed35ef421b398212e82c3ae8f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MX2620475107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e4e5f3498d092bb4b160c9c597be47d3d59bfcf747b6b85c01e2bf6166345. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MX2620475108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eafdf366d3b436ab783e7c00ea7819d2826d25e4558b47092210726b71226bd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/MX2620475113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cf801b8f7edd897efcd84359559913e4d65ef6dc62148e1e8d0e016f38c755. 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/MX2620475120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e02da3c80aae54e53e75f2995e59a542ebe32abbc5dccd31de9ebde924d9290. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/MX2620475122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c2291b7ded334d9ff94cfa3263f4342fc6dba4f717598e4017afba6ea3eaaa. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:49:03Z), 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/MX2620475124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf06257a5482d76d703a8448fd777e9ddb5f5b4fc945be2828df0d56e170baf. 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/MX2620775189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b96d846523414ab6145f448bfdd3a587dcfb25335a577ab2b836cba7a23003. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MX2620775190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc6dcaf61067688a58a76a27c0e2119b2fdeb64f0b38e317dd8e20442899e8c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/MX2620775192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90359cb38cc74165b2b736ef03293abc1702dc61d84195e2b59487fb89dcaf0. 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/MX2620775200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17640b6b72d7a857453ea69aa0ea1ea3148c81c8bc4c824e3d5ec968e2908447. 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/MX2620775202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1502f79b5c9a5af6bff33e9e5e9ecb8da34a31a7126cb96f70d1db132cddc81. 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/MX2620776745.
Los Recuerdos Están Hechos de Esto Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c2d50b7ad30497f19f7f095dea037ee21968f2dc586213ef1ab13f28f82a1b. 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/MX2621376509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ef58f54545298eceb51c1541bbcaf252ff3f1c963262f8b5f6dd02761790bc. 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/MX2620776733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcca75f20e72dd181c744df91eb4f53bbc87d08294eb99d414c28d8aa93006a5. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/MX2620776749.
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