Chago may refer to: People Mathias Chago (born 1983), Cameroonian footballer Santiago Armada (1937–1995), Cuban artist and designer nicknamed Chago Santiago Rodríguez Masagó (c. 1809 – 1879), Domi
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 0xfad9f0418b3cc37bed08fb304a611b312628e67a093263c633a7bfdcc8268c91. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/073a8542-98b4-4f08-8254-134370413b12.json and https://artists.proofprofile.net/proofs/artist/073a8542-98b4-4f08-8254-134370413b12.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 0xa1729840d20a2fa6d59db54661d15c3a379fe6569ad7d09079241f4feb637aa5. 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/DGA052014610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff87c93ed36883bdd57780e6a6b6f70dbabf030ba0cd8713fa1c3968e535eac3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES71G2042177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1729840d20a2fa6d59db54661d15c3a379fe6569ad7d09079241f4feb637aa5. 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/DGA052014610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b3b521a486f7e341857858b16f681054066a4460af734c31556f4fbd3b589c. 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/FR2X42153357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fc95f3183eca373ace75a9d578e982ccd99ac15c6008cfdf06fd04aae7615c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR59R2104477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7056b870d4532d5f4e200519ccf832e97495d18eeb2682f4d6f6f53f59b3411e. 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/FRX452275848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93acdb9abee3f23b5f25508373a759e0def96983eb6b08a2e091d971f75fedc1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FRX452325612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e6a6738cb9065c0a7829fd7190225e18acd226cb43df445215dec983429587. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DGA062382160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949f663d6fdd95a6a870f6ee6359e31e78f667d560b30f84fc18d540213a49a5. 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/DGA052465456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93acdb9abee3f23b5f25508373a759e0def96983eb6b08a2e091d971f75fedc1. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX452325612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fcd83a703fe121162b80e36bceddce8095da3418436b67f64b76546ef78528. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR10S2483444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477223e2b6208d56025049a998e809e510b68bb898ce52f806e0fb244f9c629f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/FRX872427251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4afec66ef3aca3be65d5c496c74b04c6a1dff27f65ae2a8d4a2eac6d8b21fcd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA072488032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a8f680148432aca617f3d7d4c0d7d5eaf6acbbabff15b0305446ae6b1eeeea. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DGA0H2487219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bf8d18d50dcfc03c81cf3ab3c9240219991693b1b3aa625700341d81831e87. 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/FR10S2505413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f3bb737431cc6839cf1aefe802c17b57d600c9ebd2a8fd3e296418652a513. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FR96X2593530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefb7a58fd9fad685b84002b361c2020e4a7bd974a35c52b56a8242640fee9bd. 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/QZZ8A2525490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6135a51620dea99000687e6a12f5186c0850db9c2a9cce609669d050249911c7. 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/QZZ972438170.