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 0xe1ab4d48a672d7ced0070ee21afabafe8d8874f87f7ad3b40e1eec894d0179ff. 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/d2e49222-4c0c-43fc-9586-73d7b13a13cc.json and https://artists.proofprofile.net/proofs/artist/d2e49222-4c0c-43fc-9586-73d7b13a13cc.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 0xc740303918c6e9c54ecc445d1237ab71beda624c720cea78958c27c7d6ccb08f. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USCGH2502145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a4008d7794457d704d033ff845f1937ed673523b3960aca3d89b916da27fac. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:03:34Z), 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/USCGH2502147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fd6a23b2cc2470f4dcac2b30289b386487e0a6016b8fb801287cbce61a7679. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:52:16Z), 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/USCGH2502149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42717669c45ddee1befcebc7b0e59da0bffeab919dacb825994f2e16db808447. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:34Z), 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/USCGH2502150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1deda7c8c47530d508f2a9105114e933a0ff1b41bcc44e18fe92f876f90d822. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:09Z), 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/USCGH2502151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01494dabf98b2e71bfff8b8b49067e6944da90aed18b4b3e119ff4a9d05b226. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCGH2502154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029fe2445357f81bf79e9d088f912e11753cdf6b7b3738b36eb5a3783bfb91f9. 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/USCGH2588988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4a7c81906db2add7f872ea3d25d2b17bc5937d6c98988e1b3d40c837a59dce. 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/QZES72586000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573be88bf53600f6ba0bb55c4b503e0bb4fac64871680b3348d855fd22706f13. 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/QZES72586001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c21ebd7d8a8a9f51291eaa6d61b4ba480ac9003aaee3bd30077e1be2e8d7c79. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:32:36Z), 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/QZES72586002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513df1bb3cc833405de97edc0aad96de2fab7bb742c23f958f50054e3ade2bad. 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/QZES72586006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2df4a16a6c62cf75654a2b4d006e3d0974713aef3bee3c3b2f82c196d13cc6. 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/QZHN32553743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c76249e856263be58662febf9c3b3860885fd2d827a261b67b4108e799c5058. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN32553749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd725256cb8fe38a4f0e10e0e4219cfcf8d3a6439b3bfa73ad5b4319af4df18a7. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:44:01Z), 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/QZHNA2583846.
Hollow Eyes, Hollow Skin, Hollow Heart, Hollow Grin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcf3497d665acd7e366a57378b7ca4b0c41f0e16a5caf36ca46bbd0a560e0f7. 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/QZHNA2583847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bc15a983d6be193d97ad6dfaa7ea0635735c12f2e9a39e1d9a04f941bb8dde. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNA2583848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3d2d1fdcd4a5b5460fe24fb10fa6d1919cde1510010943c57be4dc402516ea. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZHNA2583849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ffc07ddffa8c41a9f1a533ec83a4e667eafef1c8d3326b31224b56ee001627. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:07:15Z), 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/QZHNA2583851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e3567aa9e4040aadf57c2b07d324965121da1dec8e6e21994b837cd0e325b4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:40Z), 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/QZHNA2583852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2944ab4e0aba15d5b70682f9942379f64ca17925d65b2181730319eb8cef2e. 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/QZHNA2583857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cac804fcd201213daa3a87ceb1bedbc5e0a26223d49922230661bbecdc558e. 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/QZK6P2594562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc733a5b60676f1ddbb532b29f1e10fa4891ab669ce0e1e832d5212e751f1fd4d. 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/QZNWX2564091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe901dd98b3b64d9736705afed5ad4da74837ae8f90031c1d1b236bb17e44cb9a. 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/QZNWX2564093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd599fb68b8ab57824b2cc9abf90798043e5c89f674005edd5f77cff5278fb8e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWX2564096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1642a2eca96111c711bc8157f702df364e31be1cda892d3f3b6472b08e828dd. 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/QZNWX2564097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddfe58dfc88b8af3bb7afe2c9544bc870343d44ee6f5bd3ca7e290607b4a5ba. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:24:53Z), 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/QZNWX2564100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4150eea909d81546bf20e4e4d924e259db753f1ebda54c45832bf82cf9b0348. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWX2564103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafdf3b1c16b58cb93d89c48b802d34492adfcc8cc9a904859cf80cb047fccb8. 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/QZRP42581799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519d90836037d9f369d88b85e0734ad6c2bf73e90a9da0bfe2bcf459c5631281. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZRP42581800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a57e6ae1f764a4e34a3a3140f9f54ea65f86b59dc4ad1117b466ca6cdcf4b09. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:39Z), 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/QZRP42581809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c19f651a0f49b0eaf0d99e79e041d7ab647cf54c5b89dea3d0276b42da1524. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T05:02:10Z), 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/QZRP42581813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e06eaabecce3a1862d4c3a7e7ece0ee11c509346e7a83b76f665d25c5fd01a1. 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/QZRP42581816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d37238edd59cd4bc7582236cc15a404b10bb7557af0b8fc853b1695e5d90c8. 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/QZTB62546954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef2dee8449eaab92d7db347ec47c9fda1bf497fb6d67bda0a93c91a7eda1c8a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:19:38Z), 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/QZZ7Q2557685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c69229cab3399c63f12b39f8f4d7bc1c18d1dc2896f5fa744ae336169084ce. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QT3EY2595307.