Mato Grosso (, ; ; ) is one of the states of Brazil, the third largest by area, located in the Central-West region.Note: also once spelled "Matto Grosso". The town of Matto Grosso was formerly called
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 0x2f9c8cd4f394085d438f9746d1991bff0993e80c2143e96cbc8f216abc758aee. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f473d8ab-c6a0-4170-97cd-5cd85e01cf83.json and https://artists.proofprofile.net/proofs/artist/f473d8ab-c6a0-4170-97cd-5cd85e01cf83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maailman Rytmit - Amerikan Alkuperäislauluja
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 0x8aee0ff034cc61395c058d1396abe0b963227f0b13aab268124f837ad592cc2c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITS040600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97caddb049fce9ec35198b42e680b8f0840869cc795bacbdb8c7e63970472bf9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITS040600140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc176c4f98600647bb7e2fad50b0d4a2083290b2cb9b15809d39a6146eb98e6cb. 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/ITS040600141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92513a1cea30b304b4f1ab750e3f9448ac071187a66836ec2d45bf1b5d0eef7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITS040600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1969a5d8ef2e98cb5cb25f9568a7b6c24e6b4904368f8325d29e725d371c5be5. 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/ITS040600144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff328c2ba22284d875a3ee0c5c9fe5532646d6c3081e9638a2b0ed39eb6c0055. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITS040600145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754607bd882536aa33fba17ece4df2d709e84eeb7dd0f3ca4bceda97680d9d7c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITS040600146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb046592da2948fe6574db666264278fa5904fb424ad6508f0af508a5242971a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITS040600148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98305383c37e6af53bef14260428f3d20ebba44a1bc83f43475528355445aa75. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITS040600151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb308ea7aeae706091730c0a913e6d1feef5836e3bd3dedeef716bd2f3d5b4fc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ITS040600139.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d08387268bdc8b8c031b72e630249430bbfc58d7271f63fd906153bf2bebd2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITS040600143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd8e67393f07df5f028f972239384a961aa8c8450dd374d4dea4d2b7ae0012. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITS040600147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9786d4c55948c670151ff86971670a6492cfba9bbe911f5d86a1ec528ef5b9b3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/ITS040600149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a11e0d91d32b5f5d7b868ca0945c629d4f42de11097dbf598e9fd0f85d6653. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITS040600150.