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 0xf18dfe52d75b150da6ed7352f8937ce9e790819ac6f3b61590d5d3cf4d664e8d. 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/aed000b7-3aa9-4e8e-87a6-0e55636d629a.json and https://artists.proofprofile.net/proofs/artist/aed000b7-3aa9-4e8e-87a6-0e55636d629a.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 0x12c286581ed4d5d16e5f94d9693f87c762afbd1cae016ca52f90f9d365d96ca6. 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/DGA0H2352642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd96c158e3a1705a044ef6ea67f7e9aeddc3e3165470c32559fd5cf2a27d436. 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/FR2X42423163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ae8716506bfebe9e614787c501e0f7ce14e99505918a925def505a2eed110d. 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/FR2X42423164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57cfcb179d3614e855ab4c7fc65213de5a4a532898997168ab7b657c98751a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2X42423167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed575beea5befbface357f58c2d7fb9f6e4bc693a024c4942097f28bddadd328. 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/FR2X42423169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eda71b35dca6ccd9e145fe43ad0876f07ad47ea3b32180817418a371a5f9db4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR2X42423165.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f6a4fb276f31b2e16ee2625eb9d5d756ad3b6063558e7fed52e500d6daf6a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR2X42423166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfb625407bd4007faa8dc36fc6b095bec9807e499e4666dd97cb198a9c650f5. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FR2X42423168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615573ea0d7a185c202c8c2575b43a2933bd162e4ce43613cc985e73c2880454. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR2X42423171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8343753b0e9690e7673068a0d080c7614fc260041f8828bd9c1eef18b6560c71. 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/QMDA62166236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7164f11d462a93551dc654e61fa62bc7d307bb2b327451dc1a3370d7fa0eff4c. 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/QMDA62166241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8cc067a9916000fc45e8c3daccdf1a39154dab484243d9bcf960eb6e760355. 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/QMDA62166242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c06852ac3ae92f2562d6173956b421b3e19db79ae7dbe9d17388b6fe90a9c88. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMDA62166239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d9e2eb6c0f2dfd2cfc71fd15469baacccac1a3dcd9c02041a8316a5ca65c2c. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/RUA1D2013792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494386d23e0dd9fc2565b7fd7c1d99003daff7ddb1b4d166f1e06a207fe6702f. 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/RUA1D2005660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83c0c8baab39ed29b3bc5e71a7f8768d3fd895a8bdd265d5d9529791e7d85c9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:26Z), 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/RUA1D2005668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35ff388b4c1f9105c3981d8f8126c454a776eea8aa16eb96582fbeb1a33a282. 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/RUA1D1826572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b08e87a5b83a117c8713e26805a6d9953b0ee7fd302eaab78df54761bc020. 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/RUA1D1826570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1cb5f258e46441b20344cba3dae710fdc91e471e0a395efe958db9afcbed3b. 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/RUA1D1826571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925ad16c6eb54dae24a5fff19d98c7712d1a5a7dd93d4fe8e715d040910f3c14. 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/RUA1D1826574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54acd930883d35ae5f4deca681aafa2d8c0fca99a4ffaf33dd82b10e32a4978f. 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/RUA1D1826573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d900fdc5d04e9146f0acca3be8b5401e5518e26dbfb9ad115723fd92c15932e. 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/RUA1D1826576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd897627526d6c12169c04031fd819be82160197957e33310d1384f3297b2938. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/RUA1D1826568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781035d68247ccaf70d0593a11ffdcbfab6233757dbd22a0f3f0e271a6dec38a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/RUA1D1826575.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae12697a963bf5608a9b6e354679b6e7d3bb3a1e8253b61acef50af78257a7b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/RUA1D1826569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff3e5c8f7010cc622df1a0d0635b7e2098aa06848c218a9f60b701288f318ea. 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/RUA1D1926287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b3fb165757dfc3ac2808d5e24003f2d166fdbe6718a37f5ec0b93c537e4e48. 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/RUA1D1901822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d6d8c637a02a0628f3b6d571080a462032156317a6a2000853c89c55510d47. 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/RUA1D1901824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d6d48c720cdc9c8ad502af06f52097f13ead77839c1249219909255449dff. 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/RUA1D1901825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1719d166a4b364a71b8f8c29d8ddf01dced726716b547e4fec10d53ea55042c4. 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/RUA1D1901829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc889fd02285a19661849e8b15d514c60c4ed0e6dd81a1f55c111503606d4908. 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/RUA1D1901827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a646b3b6c597477cca5e6801db89cd03bb7372636b12a742a415a1485247ab0. 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/RUA1D1901826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe93ceecbc32f27d93945eb524d9c233691923e0a7519269a9a7378933a6743. 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/RUA1D1901828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad34edd0d6de7d6e03b278c241b26e93a3c1f1f006084f135eb2e37d617fd89. 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/RUA1D1901821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065ba759132c1e26b09541a4a11292c0d10713709a31386e4a38e013ca20cc62. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/RUA1D1901823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1653e2a9cdd938d14cfe3f449a8e34ad72d55c8daa4d38baa13d22442e3517. 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/RUA1D1906837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87be9b59e865ed8627f379608c70396f2666da0c160aa3a430bffc245f9fce3b. 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/RUA1D1906833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71ced589b9b16359606cac4938b4231f6ab9e68c2e36428cdfc551068dfe3fe. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/RUA1D1906835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b14dfd3f42575230364c9ed83d3860e92e1a0670eecdb7bfa8c00bedfa3bdf. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/RUA1D1906831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dab7e8e097319bb4110023fcee5c44b9c2fe783316d2a4e306b6b9fe80b68c. 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/RUAGT2463686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0520430e1e7fe937b780522989061abf17e5e944424a061b77e50e5a29507b5. 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/QMBZ91953434.