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 0xf3f59f0ea9320cba2d6f0eb0e2bdb117b75c60bc4c1a91efd4083d498971c063. 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/26777cd0-aca2-4aed-8cd8-a98b13cc4252.json and https://artists.proofprofile.net/proofs/artist/26777cd0-aca2-4aed-8cd8-a98b13cc4252.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 0x083041caee1c9efbbcd264f02aefc3224e0ed9a03fc3497a8b042b8460c83bca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA052226835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1d620d5b57589895999839d85b85163c1c973d1cb6345630986aff9267650a. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/FRX762228888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef50567ddfd3a079af30543e48591ff3f124f4fd78ce26bbb99ea831eeefd2cf. 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/FRX762214866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202eceaea1294026c864569e434bd5f0409516df3552791ca8cdfaeefaf1a4b0. 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/FRX762214867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc288fd6b37335d573ace73b2daa59cdbcc2d67400472300eeb78e23963b0431c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX762214868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0009a123a5b294e4d6319e6639a5b568b29c1d9ad382baaa82b361c1f87d71. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/FRX872302600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a7a46b957376ceffae4f4484ed5287d02977d00c4e7d96a3e26e19a08b9458. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:52Z), 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/TCAHE2352407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd327aceea009cd81ecbca170dc09651895920435bd27d8480d5ec1c96fa503e5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR96X2487786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805f4d1835cb6cc5e92de5cb2580a3a5d8c2f55d0df263ec03aaa2dafbdc373f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX202403326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d49403bad08d04004b697374462fd65914a5ec3176a6daca9a1227fe5e2fef0. 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/TCAIH2440632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6529a091e4a0afb834cc3e4cada6da05ebf42f7b356c3963e61ce305dc8c4357. 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/TCAIG2440665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a45f0130aebe6aca7870924362857a5d9d73076e62abbdd485549e3437d9978. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAIG2440673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba181d563d3f93a3dda296b45f543cd3f974e89fdb6643112cb14243ad175ce3. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/TCAIH2440681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1495fdc56abb32c01549c4f6e3e37d41c7bb479df0e510649ca789fb51f15578. 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/DGA0S2487272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb366b87fe8fff11d5c30506242ac9157c787a80b45c1f6652aae2e1e640358d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:00:18Z), 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/TCAJK2505444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e2fd10ac7d2a01316b94381102e879c9a5c59bd789b7c8dfff84fdbfb822c1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:15Z), 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/QT65W2510900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5633a6b166b04ab3a3bc53f07f5353afac7711599ac208360dad28700d2ef112. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA062545574.