thumb| Physiognomy of the melancholic temperament (drawing by Thomas Holloway made for Johann Kaspar Lavater's Essays on Physiognomy, ) Melancholia or melancholy (; from )Burton, Bk. I, p. 147 is a c
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 0x9de85ab61a7198ce4a55b367cd2ca565aaf62b89a9a158d3e6fe8df30cb9af15. 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/3b43e628-99cd-4a73-b97c-ed48da050533.json and https://artists.proofprofile.net/proofs/artist/3b43e628-99cd-4a73-b97c-ed48da050533.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 0xc51e7faecd1d4cf9868d612f5f39cc1b6b8d2cfff610ba77dd96692f68088f2b. 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/ITB002000646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a2d87899e6838fe13e648fe66b4ae6d3d23b38667db2060060dcf8c9e4520. 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/ITB002000667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d58939a4d91af1a488c054ba8351f9ede376f799bb1e5a1c6c8083e01239ab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITB002000670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c850756d1e70fb9a6df53ab4dc6b00bf8a4a5975a6d6b304e13efae31604733. 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/ITB002000672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8784cc5c3f0f7a2106dd0d2e383e26b41a65a5ea075326bc9b05a3e88782b453. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ITVTY2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e81e7efe63ad1e2928ba014df5278ad2b4fbf762ee34f81548e6863920f6ae3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITVTY2200005.
LMMA (Lose My Mind Again) [prod. Planet Funk]
LMMA (Lose My Mind Again) - Prod. Planet Funk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6be3dc49c28386395455f0a6d139a161fad7f5b55887ec8dfe1cc44a066a1d. 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/ITDW02200012.