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 0xf40932731d6f1baec215c7e3872bc4d73109a70ff8c145a57b2a0c27aeb52f17. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55b9fc4f-5853-4404-b0b6-e39687843551.json and https://artists.proofprofile.net/proofs/artist/55b9fc4f-5853-4404-b0b6-e39687843551.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xac8a554829e4c0bbbfb44edb9c73dc41de632b22fd56cda31709f46c5516cb52. 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/QM6P42429410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fb3388ab9e9655ba646193c32f26e2649e4e6a37e19a916d0aed44a5ec9cab. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFME2354991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab42ffb796e34799cec7b9b6e620a7efa00233d33b74b772b9dbb2b4b57f209. 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/QMFME2354993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2aeb848dbda09b136a66eb4e4d99e6c72b7109341eee681f1a46cc1f9e4bee. 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/QMFME2354996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e588a3d1052119b159be0f1f181459513c1e5d94afe1a8af49ed2eaa245ebe. 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/QMFME2355006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3148afd7cd5212d69164d74093e402f97f490324100751de625e15b4a9397fef. 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/JPB601894058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2e78eafcc60f5b1ee82af7d628d5eff8adaa3d2be1c13cbd424bac03506d31. 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/JPB601894059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ebf8af11d08e11ea65f2b7c783780370577de5887277b55d214c1be1031247. 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/JPB601894060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287ffae94e71e0a525dae44a45f17ee8c12ae13010b99d16be4a34a11c85d74. 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/JPB601894062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9419115b0ee06304ce935613e82b6aeda587e4241809e89bc351197984f91d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPB601894063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb23d7e21e5828f382ea29fc9daea79f8ceb70ed9818814b1e86d68a183f271c. 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/JPB601894065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15385c15b5c2180b7580132d6c099a214aeae4724971550d0795c4b2c250220e. 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/JPB601894066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920adcf041d01f0663710c44d840d12e4e8db843d6532d51bed2d312d9474b25. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62420126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051dcfb77a97c40a3b9128d94176bc2a36b9529758efcbf1fac6cbc0e2154c68. 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/QMDA62420127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4fe4f941bc32286f21bdff750359c9a603fa2475a13f6d727a07cb8e2abbb2. 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/QMDA62420128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cae6a6ec2d20728133d07372b693ff31d603267e05d08960426ce5fe39e7406. 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/QMDA62420129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ae0adff2b714584e5b29863c8b60149af583dba01daf113b1e56308ad95289. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62420028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ec657802e7629fe30d0897cb991a71ac0fb00852b72202c6954d67c742051f. 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/QMBZ92441584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb773e626c0230c7b1d44fe0421379b873ed1d2ada75e599feb671bacc6fab300. 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/QM6P42444741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd9779dc8d7f8ef500bacd7f53d8c43e8f2011b49ed6ddf4d51b5b2013ec3a4. 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/QM4TX2422492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2aeb848dbda09b136a66eb4e4d99e6c72b7109341eee681f1a46cc1f9e4bee. 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/QMFME2354996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fb3388ab9e9655ba646193c32f26e2649e4e6a37e19a916d0aed44a5ec9cab. 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/QMFME2354991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe1caf794aa0feeeb493796a31296122017578926b7bbb30109497fa6277f9. 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/QM4TX2314591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1474e6b31a9c23e85952c3c18e96baa2e52967f572c637db4b36a4edca0d1. 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/QMDA72253778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fdb0193dd0ed5a6eb6c51a7f310047984d91a523c935a37a947055746f8534. 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/QM4TX2288371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c6dc1e72136bdb5ab793f20e6b8abbad60d4b185678ca100b2c057181e3f82. 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/QM4TX2240115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868bbb468fe3afa8908865b43428ad48541623346fa7fe838ab31ce47aa85671. 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/QMDA62165557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e21fe40ac44488287f52e681f25632291e16e8323331cd354084653bf0fae9b. 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/QMDA62107667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a39dc420b47c7a787d04d6d9a450a1cb8f86225697fd54aa70f583594643e2. 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/QMFME2110054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e4ab2c1d44e75a28ad2a24ef5e402cba19abf8cc0da2a926316cd0eacd22a5. 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/QM4TX2193180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08adc44c38ee2c74015551294855f72e1c5b63f5b2f11e8fc2d5c35f961750da. 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/QM4TX2105653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed567892685f8a2e3ce77777756b7401dc209a48c3e63e7534c38be935fce63. 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/JPB602087691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f2edcc31bb15ef4287403e8fe0edae797fb3483a2a9feac22c5b5d535b2acc. 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/JPB602075853.