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 0x5aca7d8b793da5155639e0f1a48d5a4cbfa67280ecfff3be9effe587f4e765e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ab59e5e-f98a-4f6f-a420-edd643dcf079.json and https://artists.proofprofile.net/proofs/artist/4ab59e5e-f98a-4f6f-a420-edd643dcf079.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 0x44dbbafb7c57083afbdb1683edae722cf873b431a470a7465e61cff65bcf791b. 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/QZFZ32037415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32b9b42044a221bbd340f0e62234a6b30c540f60e475711071dc94bca700a8c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ32037421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af0e45cb4252d0678e291b22fb2d22a3d3778c67f030ca327fb18543f287180. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWX2053223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b0dcf0f50f97f629cf88996b43299faed06d87340fe9da134834dbbd12700. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:02:48Z), 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/QZNWX2053227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9db8fbb3db87638309e2c865d72b134ec699abae9203bee0c934a4ec99ed364. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:41Z), 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/QZNWX2053229.
between worlds (cloud9 intro) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0fb02ae9e41a7624dc4d50031f67fa47dd57d0c287f1fac8809a05e1884421. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:19:13Z), 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/QZHNA2136249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19471c1c51ca58cd2b598fa5029f6bb772c57886e62c72763bf658c2a26c5f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:57:45Z), 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/QZK6M2170466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351cad2d2938eab32c977f425495daa213099645681e6ed573a13adb4af3c0d1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:38:14Z), 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/QZK6M2170467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72de364d0d2dc13bc65425ded82f91b93662bda39c614eb36f79a3182f7fb64. 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/QZK6F2354412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7163e1bc240643b2f29a3aa5d51b0817bc646bdd10aea53d69eb7312b6719a. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/QZK6K2335764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7edae8a0227ffdeae85475ddeff3f0df729c68f84520f3c03ea098bf6b8c457. 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/QZK6F2354415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb7f78388b695f0e28a3a175d954e7230a120b3b6b4cb85089f81e0a14fd2aa. 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/QZK6F2367544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b4b910591829b6f53579e286ce7f58729163ae02ebffb702c1b0197129cdab. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6F2367545.