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 0xbfdff5e2c382e0024f8656c09fa3c52a5c5070ed327847f8b4cfafe799334707. 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/aed44176-c081-4bed-8444-ad8e0d8a0efc.json and https://artists.proofprofile.net/proofs/artist/aed44176-c081-4bed-8444-ad8e0d8a0efc.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 0x6f765b74319e5bd3ce85d6174a078f19a8cf360feca90e82c876696cd08b2f67. 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/QZES62019101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0155eced561c744dabf1cdacef99e3c8814ae75800f2098cca987bf8d637c2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:19:26Z), 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/QMGR32261896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e3e0f4281a69e03f62659a3d47fd169307e64699e51b842b444dbb1a0570e8. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:47:48Z), 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/QZK6Q2149016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd3a980695e31fb3ff87a6c432844c19f2692951f0a04e75d5ec9363f8c7bf. 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/QZK6Q2363787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f971c5d8e54edb15ab6c2b2e0a3982d96b9ef9e3935004d82047c2e83caf064. 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/QZK6Q2363790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd3a980695e31fb3ff87a6c432844c19f2692951f0a04e75d5ec9363f8c7bf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZK6Q2363787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78473e5ffdb0a8c53613a65f0a4614f779501e0bec731e58a27799a1e17689d. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:09:07Z), 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/QZK6Q2363788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc852b661deffa5af1fb63bd48ba17b69abd2e81755b88c227aafaa2e0f2dc0. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZK6Q2363789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15311b765bf1b0f9a4496e2663e029c7062b20d6b1b1a81d0de363bb6ef0d71f. 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/QZK6Q2363795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340850242ed8fe75f60aeeec7abbb21b40ba11196ba086fa475cd220021a1414. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAS2329283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340850242ed8fe75f60aeeec7abbb21b40ba11196ba086fa475cd220021a1414. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAS2329283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc21e0315f1472448d9c388be4e57bd0a81c2f68af20b1e055c53f4c0f2c32e5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:59Z), 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/QZTBC2344212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1947f5ee8e31a8c255f77a254df034a5fcaa706d1ef6050c8101d4e6d87942. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTBC2344214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c7aa8990c3aab8515ebb603dac39e30036f2aa382613de9ec35d87b001cd4d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTBC2344216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc21e0315f1472448d9c388be4e57bd0a81c2f68af20b1e055c53f4c0f2c32e5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:46:39Z), 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/QZTBC2344212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1947f5ee8e31a8c255f77a254df034a5fcaa706d1ef6050c8101d4e6d87942. 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/QZTBC2344214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c7aa8990c3aab8515ebb603dac39e30036f2aa382613de9ec35d87b001cd4d. 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/QZTBC2344216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41b0d9e81ba5d2f3edf29d50565f556e100021b88b149e11dba76feb92f9ced. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:42:53Z), 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/QZWFS2316428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41b0d9e81ba5d2f3edf29d50565f556e100021b88b149e11dba76feb92f9ced. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFS2316428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c21e495ba4eb375ff3b84ddb3c25275b861257e44c4e64e411ccec35a5b777d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB42472081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0877b20ad28ba6d734d4246a431957dfe73f0e8f0c2c9adb6a0d81f7d6bb80. 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/QZTAW2471212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c21e495ba4eb375ff3b84ddb3c25275b861257e44c4e64e411ccec35a5b777d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:48Z), 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/QZTB42472081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26539586e5a27d3a8334288bbbfea0e37ed164fb1b5415119f3a07ab232d9ca. 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/QT2UZ2450066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b54673137c4ee3d95a08756e5e4c470da93e3364a515b0da97de95535f4483. 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/QZDA72288444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63402a6ceb5952a9a3e1fdecbd6ffd63e85375d7cbba081b969b0f35246cb040. 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/QMBZ92566321.