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 0x3c299bf85b4e6cd9e8eed354c548ebcde96e0298187abdbde3a817d551885d38. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02b81617-79c3-43c8-9060-71afe5bc6a3c.json and https://artists.proofprofile.net/proofs/artist/02b81617-79c3-43c8-9060-71afe5bc6a3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ทุ่งหญ้าแห่งท้องทะเล (Sea Field)
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 0xd6e5db8eec66116a76eb18ce6cafe229da252cd23c201305ffe204c3499e9504. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/THSOH2309295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c045ab17561daeee532bd2dc2417f60518cf76550aab79db83fad40d9a10be. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:16Z), 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/THSOH2309297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612af5bf4a8ac40ae9438ad426f9d0be7ec14252f391818456f13c8254328af1. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:46Z), 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/THSOH2309298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bb1f8a28e3ba7aed1b19bc9986158ddef0e85ecd2cec422a9de4949d249a98. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/THSOH2309301.
The Naerunchara river ริมฝั่งน้ำเนรัญชรา
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98120a949e25856e3b87651b686340acbcc7f70c7bdaca408d9b9edfdaee8b80. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:18Z), 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/THSOH2309304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159731ad69b8c8bafb6fba738f29bce0d079cf53dc78f103e719c02594fb6a0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/THSOH2309305.
ริมฝั่งน้ำเนรัญชรา (The Naerunchara River)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4ad06597d217d177a7ffdaee82ee79e658d263d32267f894bfb55f47e500e2. 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/THSOH2309306.
มหาอุบาสิกานามสุชาดา (Suchada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72856a5d5f4f27222103f72268c66612551159680665a6b73ead388c1bf46d3a. 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/THSOH2309307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a6eb590df629d95663f8b35b5fd330007ebdad9c8cf5cba281ce39d436734. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/THSOH2309308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c579e843016abd8f198eb2ba5230db3f599a6ea2545652e2653200550cc559. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:10:05Z), 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/THSOH2309281.