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 0xd1ddb14c807b6fb385f1ba54839474b180c3fe8fe4d4c90bf3e4ea57bd6c58d1. 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/eb14720b-c658-4279-8e96-ede5633e2034.json and https://artists.proofprofile.net/proofs/artist/eb14720b-c658-4279-8e96-ede5633e2034.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 0xa34e52b02ebdf3b8eb90780a63b401d827ac3606ff1ba0c83416b597b0f97513. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZES92336455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28f31bf1553560a6763bf8e5876a132b6095c2ca53dbeb2fc384cd366bf3b2f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZES92343071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bdf34ae661a2dd293062d60bbc2d2c4e38e97adb812ad9604e8a98f133a967. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZES92394385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a29675c26263bc3f420b20468e00158d7dc91f0d121321f604170f6ac35527. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZES92344037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58148d9bb0f8a9d3288fa45ffc2a0bedc6cd5fb1622eda4898444e669e86cd7b. 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/QZES92345439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab74b8d93927bb5eb32fafc7bd6bc5b9a47adf209cec399f305c768763d93a54. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZES92344044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a479a5ea47dfa47b3abba1dd803b27675d05e47908948b02d3cc264d861fe8. 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/QZES92344038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ea00b6331e3d8e113d715fecd973924c5909bff9d98bcd729611a84de0265b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:26:47Z), 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/QZES92375042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60a86bfa3a02325da102ef3b451dae35c477cdd21837eaf3c6eb3aa83d6c578. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFK2342623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732fca1e99fbb24a6c60eb66c043d886d6249949fe1b366cbb66668886ba28d3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZWFV2449319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab7a398253d9c4a6147284b3243293b55e71529f19b8a09f252aef9389d4dcc. 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/QZK6N2566963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed41a1a559531e3f04f0a11f49d089855ed02c1385e292f0abf5e9b875334d1. 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/QZK6L2562909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f368d7e1652a201f46024cc807c92e1e9fa4c6412b79648a468b47b0dc54fa4. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZK6J2589334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f393050062b926301d3b427e6ec197419d0a852a4cded4458c1cf0b44dd00c. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:42:40Z), 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/QZK6J2596974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2274f8762756d22155751653e695fae9b329b50e8f90486aa7e3ce5e24f8deee. 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/QZK6H2535353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa6a191859f42f1d80af9351527cb2f88c6353c144e6d9f2fa92b30f50669ad. 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/QZK6H2538076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1714fc05039964bcb6dcef100acb31946b098ff638fa441a778a0dab48da1c5b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZK6H2575829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996037d3d44c4390252b14c94b825f5c1bd23db3f906698babe1b7f4011dcd1. 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/QZK6H2583412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec92fddd00c6e917cc7ad7ec6f879b40f7f666e784f83e814339684f7900aba. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6G2564603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5ada7bcaa438b996d683b3572a86ace326b6d79cd026bf12cc5351e9b54bc4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6G2561370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122a342727e1014185b2374f48a7a462bbee60e2fc665483a6a8b02200b44318. 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/QZMEP2503481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca8ba85239d5a2a6c7ec0727126b920b52c5f9438db07a47cc705b3c2babb64. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTB92546937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cab1e73bf7647d0561cbab608d0472259c4906e1afb13369592055768e8579. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB92553910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8dff3c8640e1a552debd9f8f96e07bd260cbfef6459df11ef4c45e48b8e39. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:21Z), 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/QZTB92598263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a1fc260ec8832aed4c227f8722db095eda193d71c6b197c71006ae0c81b7bf. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZAKB2478099.