Kolo may refer to: Places Poland Koło Koło, Łódź Voivodeship Koło, Lublin Voivodeship Koło, Lubusz Voivodeship Koło, Warsaw Other places Kamalanka, which was also known as Kolo, an ancient kingdom i
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 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 0x495a056d5a953a39357ef9475feaedc8adb18507b125039c1f5a3398840f1eee. 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/443ebd06-af08-4ba0-898e-4a21387d243e.json and https://artists.proofprofile.net/proofs/artist/443ebd06-af08-4ba0-898e-4a21387d243e.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 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 0x3d6f5f4a75a953ad403c4b5b4a886978bfebf29007ccb4f06f1653a9d27ff7b1. 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/QZNMW2326741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab74dc4dd414873456c3d9e9715081e667725bce4155b1151c3c1aeaec6be19. 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/QZNMW2307614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154e073f53d7c52d602f447cf3eb765be5183df1816b0a1c35fc560ee29b7287. 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/QZNMW2326742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff092046ac248ae6c0361bfd170d0ae2386c71d92b507680b139a89689baa138. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZNMW2326745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91557f054378b713440d4e8c2c4fabdd079842908e5df2c960b319b45afca06. 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/QZNMW2326748.
What It Means to See It All (Instrumental Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5280e0b1e8db6ca588288482a47b89df9cb3af78f4f5b36db88e1ca0b6d6e511. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZNMW2326744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6600b6b816a395681914f5c6a88bf1934ae8afd1053e4ce3949d0950aeeeb13. 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/QZLL92487883.
What It Means to See It All (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6f5f4a75a953ad403c4b5b4a886978bfebf29007ccb4f06f1653a9d27ff7b1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNMW2326741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ee764348c409d182611f40e7d47610338b8a970c46c34586845c1970ffbe6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZVEM1810741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fadc9ede643091ef288fbbf8a34abea481c9fd96471dc8a25a07f876f45479. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZVEM1810742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39b7478ba551bf1b98cd5cc4fe20121cd28faa4ab0f4f84aaebda6beb39431a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZVEM1810744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55282eff33f3797d6a1156571baf348ae2f253eb931ed5b35135cb90a9f82a31. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZVEM1810745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4994429502f66fd44b4507a43d5590bd4afd1b2e698a90ce4dcf26903204b00. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZVEM1810748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b76423c8ede9e480e87e240c2b60f8b01735016b6fb0364e71245b421a7029. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZVEM1810750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab619145f24d8a6e5806d5f9ead23073c1266c5b1cf589b8890f93a9eafa9b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZVEM1810751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119c49a18f29e4771446121943faf126e87227f6f17c3d624182f12bcdcd7470. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNMZ2297805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b5177dea2ef042d81c0527d3929efb4e3f6f461b2a50ba212cc96602b81274. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNMW2456037.
What It Means to See It All [Expanded Edition) (Clean]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a500a0b1b6c182211c67eb7258f0a870a232b11bd73e07d894f125ba17e5d48. 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/QZVEM2567324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb9abaea0e50489cb00ebb93c1778427ca81c30d8145c6e634330eb718b0c5. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QT4K42584378.
Cacos De Vidro (sample: Esperar pra Ver)
Diamantes, Lágrimas e Rostos para Esquecer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a9a3443cce2e32096488bb58fb9a1f257ce9a61a43c43bb420c2c638f2f568. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXA5K2500015.