Choco or Chocó may refer to: Geography and culture El Chocó, a region in western Colombia and adjacent parts of Panama and Ecuador Chocó–Darién moist forests Pacific/Chocó natural region Chocó Depart
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 0xa349aa76132533d7e100de56148ced56c3080bf70715d66c6b615f9ca1ab2c75. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/757a5c74-db47-4699-83fa-cb58e878524a.json and https://artists.proofprofile.net/proofs/artist/757a5c74-db47-4699-83fa-cb58e878524a.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 0x724032781b1b6b24b1ac4152a3a8f592ae31d96537ad998c42c49d23605909ad. 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/TCAGR2205637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f6a0b9381e0adac18a4425bbfbe77e125fec647a8779a3a4ac48e1efc1edf9. 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/QZGLS2440379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7296e6b70fa882b7b3e8ecdef2a779fd8576db9ce85af6f6cbf00ea3640e2e68. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US7VG2452492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ec8ba050ee1efe1c96f374e652bc31d9dde557348f77e9ca8ee7fefb3eb636. 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/QZKDT2300514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5116cd7e00f24c6c4ef4c454c4e78b8b83dcc7ad57da5ac1b2d61ddbb6335d5. 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/QZKDT2300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c76f54f7af1517bd04196d9b89d99e7e295ea61172d55e596218f35d145613. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZKDT2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccf8f13b3995f968cec702886d675a38cb1aeeb197ff611a4a7887b315685d0. 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/QZTB42220779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1c921a964e401a9b44ae6e0a8278e2cb60a060b888284d15b317eebc9128bb. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZKDT2201168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eef196e5d57a52ba14165c9eeca87ab9c201af9e678ea4f6bd70bbd6c6fce34. 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/QZKDT2201074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d88c3bebbf9ea37ee6cb3792c8a6fb839640e5478b6dd6210140a9d7d2ec64. 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/QZKDT2200991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc7e2f5d497ad4c5cfaa6af7c8bfe3c6059feef1696a27a90c3d13d8f0aa354. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZKDT2200860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb456c150bed08cdc91636fd2b97762ae1a1acb872a537edc281901a7b20ca7. 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/QZMEP2230078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de2439c68956ed69348ad171940dd2b93cbbadd520b1aee038bf7d3cb241bd. 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/QZHNB2212216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167647991ef42ce57c8158abcc2e3faf101e3603ebff1e76a5e313b3db678fab. 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/QZHN42280572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e02d842c5145eb1c1686be7fafd08beab81d8948f038e0c6a191d4e2db3b0a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAGD2212572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd566225cad24296d73d17699b5371c907638ba2b7948d09d00dc745758ca53a. 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/QZES52284490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce77192ac6a37d86e91262a7033840106c8d664c935f6c7d59815a6c52470621. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZXYG2402876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c983c21aaf0e2761a04116b3d00bf5b21ea8d69c3d2dc8fe465655fd027203d. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZXYG2402877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7f971b418476a53429cc50b9825c25a833915c8f9428123aab5fb526707a8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZXYG2402879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dc0e7979bb251358dda40cc596e48c5dcab0f864cfdd5b609a20810852756e. 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/QZXYG2402880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c93c65cc1bd293fd9fe8a0ec5c22d004c60b1bef391dff8bf4715956f5e019. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNJY2493922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f20889a045b8c7470ad1afc6388f2b2c57abeff4e5ff18ea6825c1d7d774c62. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZNJW2423971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f829b34a3e77d18508eb4534c826e994ed7dc9f7d69c3b8a5eaba3a63e0ae6. 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/QZZ7X2418002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd503eefb08c69bbdfeca6c51024e787f948033df04118394d47ffadbd046f9b6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZWFF2431741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5629c94c6c566e9158ee52f9c3c82e6c74ff44d76df2517d3f890c4aee54e8fa. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/TCAGR2205618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724032781b1b6b24b1ac4152a3a8f592ae31d96537ad998c42c49d23605909ad. 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/TCAGR2205637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790298662b855ac5dfc5c7659372f7d3bb9bfebe25a55cc165f46ed67284d913. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCAGR2205651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4530fe1256e6a4bec0a7c3cefc37a224b62ca42c3d2329965bdf61b6cb6e8eba. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/TCAGR2205655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf37dbc4038db0bee183ae877d5cfb7770d94177ceb08f04bd0b8de85a9a408e. 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/TCAGR2205663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bc6baaa99d57dd0302145faa76870060b4c72dc37f31045617001f6ed887d5. 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/TCAGR2205682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86c89708690149301636aaed1824a839656f6f218bfc6e6a1ca21fc32378f1c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAGR2205685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7883c9e46de671d76a894019d5eead419694f36e22ba0d1512e80e5cd2360e60. 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/QZN882531973.