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 0x70219960dbc790843b5f7877c2150d75dd2e47f6cb42bcef558a66868d7a83ad. 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/8c4857fb-40fc-4aca-8657-ae3d9d6910d8.json and https://artists.proofprofile.net/proofs/artist/8c4857fb-40fc-4aca-8657-ae3d9d6910d8.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 0x5dc4e61747ca0cf014d31b689f0d10f799554cbba67be6233cb14c09de2b4f6a. 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/HUA611603962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd090252d1925a136d354fc8a609e89c905a880e3e81302598ba2035f841688f0. 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/HUA611603963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f9c394cb8e74cb10516cebb227b2e76bd680a919fdb4d3bd99d7e272630c8b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:44:41Z), 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/HUA611603964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92cddec730e20602e19f1dd194ca2298171a1a3ca2931dece75fc421994d23b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:30:16Z), 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/HUA611603968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224e3fd789edefaeee3da48709595d4da4c85e86c2104da9a804653de057d7da. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:08Z), 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/HUA611603950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7924ba223d62849e698f4f1d7d2eb0d1330f94de62f209425bfeae944cdf96. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/HUA611603952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4612f1854895725995b0f6b5abea9e5d36fd8a7dcca8a54abc3390a2955f0e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/HUA611603954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e93ffed1cb73195bc67221d4f2dda09e8be437ccf6f672d39eafbe1daeb4ae. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/HUA611603955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9686d63706a98d5cd3ddcd7f759b16369a9e22cab14dbbaaec1ed227eec18d0. 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/HUA611603958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5b53a01262f3502cbd50e9a8f653682fa09581a85be6a0f48662f8f49d9329. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:23:13Z), 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/HUA611700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e3f32ad9499572f2f74f20012172d14b67e38bfbec620a25c7749077920340. 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/HUA611700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda639deb537d42ee7956fcc713e5b123f28bfa0f35e3f30ed65e0ff9a2f0709b. 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/HUA611700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0da98f373b141869b5fac60a281ff620d5010f44602fcab3781aa30d58bb9e1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:03Z), 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/HUA611700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa19ce7d5d3888d5fbd753a9676a06066723862dab301ccd6423eb71c8256ba. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:05:37Z), 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/HUA611700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dcc5f392e9b13ba8a39aafb47f12a02797825aaf0a136bc4ab66a6b329f4a0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:44Z), 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/HUA611700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5af7348ea419b22343dfdc6579488b7e04fe4496a10eade4cb58d75513cd2f1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:04Z), 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/HUA611802231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab90a89bf5ce2d3b0ec451bfdb19f937a605232da37f66dbc9ae8f86ffef3d. 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/HUA611902994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cdb1b840be4f5269b1ee5cc2bf86dbed8eadd0b79cbefb2e901fb22e677a0c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/HUA611902996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b27b04c60b04e166b66349bcef5279cc62886b444065f6f4c3681f5fbaa2a2d. 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/HUA611902998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908c8102c66b379681fe51503f3d0346802aecba3866f889407722d22cb03a30. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/HUA612022417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8367e4672220046e1268af511c2f6edf28d2dfd4109128fd4044e52efad013ba. 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/HUA612022418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2439d8bde20e93ea54c679a503d285dde6ef4eb33f38e037d7770a7d825e7a. 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/HUA612200925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cded058ddc8fa41806ab8a0e176cf88bbe331276ad3fb72521f4492179d4c3. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/HUA612202625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638d421f56c664049bf468c0944bf1606cfad9d5f0c7a62fb77a3c6439c1419e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:23:53Z), 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/HUA612300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30082e148721300bd87b72f0a20209e2ca457bd28b26bc1d5a8ad42ce83323c3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:58Z), 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/HUA612400945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6493d756029c583e8056e8732b03dc8cf1632ad8b3f1177e8dd01dd05c08f0. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/HUA612400946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c21b3d7e1e64649273afe7ce910b183344215bad92d59f9d88da667f33b3b17. 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/HUA612400947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73da56465f7639bfe8d38ccfaf7f80f90e4e79285521ad2d9d1f842868f97769. 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/HUA612400948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb50d168f25fc8a883c0c3160ea9291a031dc7482274aa270a91c155e6a0bfc. 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/HUA612400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46537f91fa14916f32e50aebf0b6201a3657fe51819f44b7f670664d5415a3ea. 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/HUA612400950.