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 0x40128b6e61a66a52ce7bec8e2a2609ff0a03bedd7e12cd161e9a94d8099a7668. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00885b84-31a3-4540-8983-8aebd09b30ce.json and https://artists.proofprofile.net/proofs/artist/00885b84-31a3-4540-8983-8aebd09b30ce.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 0x7077e141ad3e62e92fe1a8257cd08b656316832aab6fc7ae7ea68643d2b3126e. 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/QZNJV2195665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28ca732ca7032ff42ddf6e7a6e19407114c6c9ccd498dc146ca5e0490dbe7d9. 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/NLRD52018925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ebb0863fc08896d815fed20059030845e605fb6d5fd1314cf303f4bcf6a508. 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/QM4TW2199542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea2c4ae5f92669d23686b6d6b8923e95934cceecb295f5986cad1140963c5e6. 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/QZGLM2020032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93eb9465af711b8f8c02b29f5904a17d2df5cf26d7f6caf67711494a950d6d96. 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/QZNJW2403546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6202268b9c0e302fd035fb794bc0008b49450ca0d1f49e9315758330215341. 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/GBRKQ2454163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c3fe50b2c9aa451b1cf06146dd1d1cc863cf5ebb389e507c12e3c33b39ebc. 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/COAF42393126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb311e8da5f85dddf5d249349fb44ad574038498478b3b5bffd0b3ee7e7a69375. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDD2390731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda46651e40812505e357e7d48a43584c06c81f4caee12dff213c7eca930837. 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/QZ5FN2341103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2048e76dd37143a1f073a7671787ccc2f18b86a4a28ebb94e296aa2d854b20a. 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/ES47E2008944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf8242185084fe143a0591e16856f07d4afb1b0b78a082a5f5ba76a8e876eaf. 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/GBRKQ2153234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55355c30c1abf5678e5abd5bdbf377ceb5175ffd2d71633488b7fc09e2aea5c. 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/QMFME2138789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd15c01a7b72cc31c4afe4ddd3933399987bd626aedcdc20776500a9b9ab9d6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZ5FN2047942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff2c1fc4cb5a26cd5b6353a5d52f1f384f6a0c9d3bec06308aa6481ad09e14c. 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/QMGR32002145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b2e604c17dfa5fac37680a1f69af6012263a5be436978af4cecba319a9af2d. 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/QZTAT2277972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2f0f5c6b4d578b3c31ad9d97cfc7a7fd61b30f1360e06da067a905c7023f9d. 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/QZTAT2277973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe97c7133fb9e61ad60c66fdd02b8f9f709c9e7367d0e2039b6c095bad22ccce. 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/QZTAT2277974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f36107ea378e56c03e9285efeba793cc2c24311d01b1907118168f432d85e03. 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/QZTAT2277975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc4e980e2bf8be7bd843dcbeffcefaf8a9c73494ccbdf1fd68443deb8cdee53. 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/QZTAT2277976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e508e360cc3810bffded74eaa80cdc3393603c94f28da4eb8d036edaba455f. 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/QZTAT2277977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de23b39531bdbfa235da0d5cd88071ee0ee19c15b60fe21b07b60e6fbd075f3. 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/QZNJX2304189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ade09f28b8ee9e150d1d1ab601bbcbd5febcc8f5db4cefb542e24ab74f405f5. 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/US7VG2087056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f00bb63cf03da69f5924b8b49fc8641d4996ac863fbecf7528d740e2e0e4f8. 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/UKXN22232808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7d28d4eb49b14bd5f19493eae6325cad4023b1ca25ca6f4c2a99cec1d6202c. 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/ES75E2411932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9a1ba91d1cf3449bf53d7969face5df8c3d3bfa916db7ddbf1c7771e129f9a. 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/NL8RL2441485.