1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x26b6e1df331db482c10bc934956b92efae8deab04219e3613a89b5803d2936ac. 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/004c33be-bfd4-4ef3-aef7-f86ab67ffc7b.json and https://artists.proofprofile.net/proofs/artist/004c33be-bfd4-4ef3-aef7-f86ab67ffc7b.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 → block OTSBitcoinBlock must exist at that height 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 0xcdeef500a7738729f80b935b3542f96ba14e6ee3ee8fe5549f2167be2a710291. 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/QZWDD2366334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34359642a58ed07f696bf93a6d72caa91c91ff1d979626c80b05d51a10245f3a. 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/QZTV32449932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbacd5fd1917e8fe6b397c91bef4314038d022b7f3a7ef839b78aa098dc4626. 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/BXIV82412037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3e154de1484238601f76c8d43d692079b43a77a439bc2a9bb1b1c4bede8a16. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:00:49Z), 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/BXIV82441451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56ec57545046712b54e722ec61b17dc57521aeaddf964883fedcd54ac62f161. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTRX2506313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254ba6fbea9344d3eeaf737c39e96a897466f079d789f258cd0ea1438e23de48. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTV32344578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b77a174410b655d31707e14675eea4e2d8e61a6bbefdbfe000119f7c094dfe9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWV32411163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9c2fb8f1e8dd4de836585eb39c4697c04df56b3b8431be82bed32b47202abf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZZ8A2394856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a43c9513ba7f4ee8b1740c93ecdc2481c7e0015f74cff99af1cbad3ece3998. 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/QZZEB2306103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d46eb149be84f19339c6d96ebc2f198961b22361c0a18570fed0c4bfe07101. 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/QZWDE2312736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73694e6bfdcd146a42a01639aa5ae3c55f21324a2fa670ea28610f5f3d62115. 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/QZZ8A2481591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b77a174410b655d31707e14675eea4e2d8e61a6bbefdbfe000119f7c094dfe9. 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/QZWV32411163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b9cd21305743c0b696c6f6d3b5d64035aadefb57d910b27ac11950369d3ffa. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXIV82371600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069ef78f963adbbf6c3a99057de2b60de96f813adf23f604acaafbc1b67e9454. 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/QZGLS2392525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d380ac4d07801e5f8ad11aee7e32a862064ab235325a47c29abba6114a49bb. 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/QZWDD2599818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d88a5262e48532c21eb71f41de0b258258a9a3817c3396acd215addefc70890. 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/BXIV82399978.