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 0x717ed343ecd8e804bd8e2b1467dedc1b52ffac7daef4a5dd065aed1d3cbd16ac. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e7ed201-d275-4688-9af1-94014763a7c0.json and https://artists.proofprofile.net/proofs/artist/3e7ed201-d275-4688-9af1-94014763a7c0.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 0x7f6c21e31899f00566cbe6cff5982bc6450539e30eff60ad1a3ec231b4344d72. 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/QZGLS2468146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa4a6697162e4c0d834808a5c9c387501184ee4651498de8d3bfb9d4a88da8b. 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/BXIV82314407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58346679931dd00fbf84ab9b487a378504a85064c630c550af39ea37d574990. 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/QZNJY2329441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5023a4b7a2d3b695160deec956ebd4b304121dd87aaf03da20b2c0738867bc49. 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/BXIV82339004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd825fe4172b062d5d52bf3f6b495608be4c274f85f86ab14107d2b29276026d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXIV82332068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8c97b7317ed97519ce5adbf212864923a742d4367c26ee717aa1bddd3a5479. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXIV82345919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82747f30c68b97560346bc5e9dabd99d46854a66eb9151d01a5c77bde2c279ba. 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/BXIV82339187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dd9b99cee95144177f2f1b906a76849ecc5a77cdac51f21bac61991ba2b41d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BXIV82483066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b060d5593a4c3b1ca862d7dd407d63e05b6bf3427814bc41811f8cc99ebfdab. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXIV82475978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96d65ded00d15c4ce71342da5579f21551437f06142d6d4b398a2c184a09f2d. 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/BXIV82477037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a73d28754dc2953ab4f06d3fc13cd37dda659fd9b5e2173e1edb1787241f70. 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/QZNWS2502723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64de2dfa31e9cc05576bbc3ba00d1b518139542501f69171d569e5f097f23bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA22537773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55b048c105b19a5b4675b3ba46ee54e20aa708052c289a6d7daeef8720883ec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBMA22537775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41066abaea79f076ea3d2d9f97fb5ce4dcbf271bd9f83240aff4776c6e7db6af. 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/GBMA22537780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dc59c4f8d78db7ea4a0da43e1e748b77ec5520d8b5f5bf82e6cfb80530232c. 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/GBMA22537786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0959ce709fc5ba2d1c1aece9cfc2422120196d36ea8bb1f8306276a30e1491cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GXHAF2508467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542542581ae6c709e2c12b9d37ff315512f9fd9a6ae78eb032a3cdedfacda3f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GXH2J2559226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a560f0e95c942920d2e505bf767a8071f9b32161c8ccb101766ec74365b9b4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB82519342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ac8a3e2e4f44282212e08ccd255e7aca39cc6e511936e65479f0959ee30a3b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB82519343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a73d28754dc2953ab4f06d3fc13cd37dda659fd9b5e2173e1edb1787241f70. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZNWS2502723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab03e1b58c9aa4679ea62cac7e076cd664b03f43f4ff8d0189a501f395b995. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZDA42510838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8ebd355d9f73a7002ddebc22a3edb025652a5247a8056ca0cd90ea5dd2c255. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB82519344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26795590921c12bb3310791d7514a4042ce7b475299f47b2541be7114dd44c2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTB82519345.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65bebfa42c7ca23e5f6620ba9629fd647675df9313e28c870cba4cad92ea76. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB82519346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ed162a382ff2327a852e131c8cf9c5858715ce117b1576f4b0c56b1c0012ad. 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/QZTB82519347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd24790712eb354b93e9a0a68ef85015ea9a8fda9a49be9577fabc1e82fa634. 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/QZK6Q2575674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34510a25e98268d6446c0a7a86bd90e33bd6b36713d649b0963136383832f937. 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/QZK6Q2575675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7200671bd3bf249433ba22d8f9c0f368a47a79cf8d7ba5ede6bb3a82f1051e08. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6Q2575677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82daedb698ab85efa80e763817ca44aaf866d2abd95bb8ef1e27c6ac549e84e4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6Q2575678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d795697ead5dca2b3daca172f543521bade9097863d2625f6dad4c6d33d2ccb. 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/QZK6Q2575680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fe4440cb2f508b169c53678cee6ba5024e8d93d4dfe7e6cf705c57e3b26951. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6Q2575696.