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 0xb503534289c8cb50d0d008495491e8e2a8c95809c8f50a2e9a7e398e99b0d651. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/936c867e-b7b0-4aac-84d4-8dc998f2efea.json and https://artists.proofprofile.net/proofs/artist/936c867e-b7b0-4aac-84d4-8dc998f2efea.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 0x587677a0d496f1a20505e1e06786ee215cdd3b719c418e4aaf455191e9af1a67. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZPEW2577648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6f1d29afcdc14f01f3d8039ec5209b5594d42207b8cee5cf229df774d7bd72. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATBK71201207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26170316bf3d6273943759ce9f17b6f0aa73c26d483bb9e67ae4423a2633e8b6. 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/ATBK71201208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f9dc90edef93904d57d12e57d60e9edf083a7a09e8e30f977f67eac7643bbc. 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/ATBK71201209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d893d60babe5e8cb10ced87d8fb5f82ac1ed1c022d8027c38feb0ecf929536. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ATBK71201210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035dd3dddbf1a8e46ba94486e104d47bdf1458346896f0dc64abd6230608a6e1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ATBK71201211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa985ae05b3471fd1e74dd9f878e4273e23ae4189dbc58752940a441b5b911a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ATBK71201212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4dc9d523a1a21d70e0dfadaae59b8015d1261830c0bce6c45d9e7aeaafaa13. 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/ATBK71201213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54310c7417dbe12ffdbdf28c84ae889cfb8388a5dae55343ec20887e102b9df9. 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/ATBK71201214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723d0da79778407dd4ee591c3c33b0d5edd24e64516ebcf597d9ff0c103e4977. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ATBK71201215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370a90b490429aa26c140a10782044c78f4d524e7e01e9e3f7fe246c305e73df. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ATBK71201338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ae5b5431fbf3c5831139793604a6a213f84d06219edace635e134b9f8dc3f. 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/ATBK71201339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1bcf7486d5ede687ce9e4845ae495ff22632fdc5638af10e7edc24b0877229. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ATBK71201851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0280f119c2e8f1fd27af897ce92b7905fec51f7c2614ae225ea3aaa0a62d6589. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:54Z), 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/ATBK71201852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb3c08d5a7613875ab612fce9642e42a054860472d85e495bd279590db284c2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATBK71201853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01a269c268b128525b5709b2f7fde2cfa1484e119ab41ab4e54e859555fa303. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATBK71201854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7240f0da667402debf999c499a37c2d259a80f8f2cb5cea459f4441d83a12e3b. 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/ATBK71201855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b42b15ca9929e8004a8c4ecf8908557a311d7e57d6dbf1c35b09dce5f8e84c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:31:35Z), 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/ATBK71206107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e4f87324b766c68f4245bd47a5a29c4760827ac952f00306a3357fa0fb065a. 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/ATBK71206108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24113123fb5c38e170a9e993510967424c964be16ffca54e693928122187891. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ATBK71206109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d92ee133685362812ca7a5fc59b1f0f55e373264fb91e01bc938bdc8e9c4de. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATBK71206110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43267e6480a905476bdd6c60b7f55c82d4fd8704a675ae8b7046a89e88a5add0. 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/ATBK71206111.