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 0xbcad43f2496f64366190179ac5b9afdd37e49b6522c2b091d2c7ef91026ebcb8. 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/cc3a1deb-28ee-4b99-8583-fa76396848ea.json and https://artists.proofprofile.net/proofs/artist/cc3a1deb-28ee-4b99-8583-fa76396848ea.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 0x1ac93fb6079a2992e11c911f3b0f13882c9e08ffa364a8e2cfac7f084aea77a1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6F2287903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81325db4dc34218e3fe664191ad063d59e9d9d3a301931a604c4d7f3c3f657f7. 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/QZNWW2284750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3179cdfdb2ab990254e5775cb6a66a1e4f3793ed07be17fb8742b5dd01618c4c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB42262873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a7d1df7ca835462126cadd3c6b4c5423480172eb817dbb345decc59577218c. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QZFYX2347302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0359056345770b8007da9c00fed36c6b9c202993210d982f50fa55294d98f1ba. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZK6Q2351260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb770fa0dd5e527f3c30fc4c78666ed400b254b4d8482209a5e5bb8ffccdaa2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:07:12Z), 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/QZK6Q2351261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5335434d6489ae53fe7c7a3e60507ef772d573399205d2bb64d0424735c74f9. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZK6Q2351262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f98714eaaebe20511197651584850e8299a7e221e1936e836ab8f4d17fc5789. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZK6Q2351263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20acbae5a31f81246e3b2602cbe30978d5ced2fd3d7f3ea9c47e169ad592d777. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZK6Q2351264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4eb60cbcb5c911de665a227bd2fb8e0a2b6ac0eced4df606e25af6e99b2965. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:14:18Z), 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/QZK6Q2351265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df723f87fae778bc2106d482fae376906e9e7ade249c81413e5638f59d07d2c. 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/QZK6Q2351266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf19249ec58a3a6df0ed8531d42c91aaf1c115b0bcfd91dab8e946ab64b832c3. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:44:12Z), 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/QZK6Q2351267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3394a9be976dc1656f016d5149528ca897ecdba404519e91fff5964b0e43f93. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6Q2351268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeb82f7b7dce6c29e8af4770677fa65c9002f4f4dc1b6a683bf5362e015fb76. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZK6Q2351269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc8597b19b76db3d50b8461d24c1dba27f3201b117720eb00fcf6502d862263. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6Q2351270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a75e304c229e06d7247896340a10e0451fa8028c53f818085c2bb5f47836a42. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZK6Q2351271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d67fa22e8dc11db6afe9a96b9c8f025438c48f53feb2d1cd6ef45d54b21891. 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/QZK6Q2351272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d2aaa95e748e57b0e119ef7798463422458b1c23f5b3475c2f755c8311c8b0. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:48:42Z), 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/QZK6Q2351273.
Kingdom (Tales from the Hierocosm Vol. 1)