thumb|Saudade (1899), by Almeida Júnior Saudade (; ; ; Northeast Brazil: ). (; plural saudades) in Portuguese and Galician is an emotional state of melancholic or profoundly nostalgic longing for a b
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 0x3563e4324b5854fc5bfd1d0d6bdb8474cecd349f1496959500c14b170ea891e5. 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/a2f27116-4110-4f20-9661-c0db50d6705d.json and https://artists.proofprofile.net/proofs/artist/a2f27116-4110-4f20-9661-c0db50d6705d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Um Girassol da Cor do Seu Cabelo + nuvem - ao vivo
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 0x84bfdd7ea2436e88c94eeb934cc76bfe4235d69fda768269264577706c8e5367. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BX3CJ2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb5135387ff6a8cd81e3b9e7cb4335ed90255f342e8dce3144ab2943b20b190. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:59Z), 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/BR7HL2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb28676923ec7c983f31c046059a85cbc9daf1f7974294b3336282868a100f9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BR7HL2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad00dd9925d7a71ecbe4d1e52c6cd194aac2369a78660a4a7c175e41292bb26b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR7HL2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10289f1e2b7ea00b5578e51bbb0e3aa4dd11b0fa22df0ee30151e6f4b8faff8. 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/BR7HL2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932347a81004c4da87881efaad86f1664c2bf987531f214a6097b70bd9ee9e9e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:36:10Z), 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/BR7HL2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad00dd9925d7a71ecbe4d1e52c6cd194aac2369a78660a4a7c175e41292bb26b. 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/BR7HL2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae9d846ed9154465a587845717949cf3eae3171191c3bef532e93037c3582ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BR7HL2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb63e172f7598ae6023d99629101e0bbcfdfd43392408962abb2950135d717f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BR7HL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f7035ba036bd24acf185e336f762bd76bd7b485f017853944ea6fa25228956. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR7HL2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b05204e37c5306f1041458611e598138c5e78c2b2904afaf68aff464095e67b. 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/BR7HL2300008.