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 0x797ea85421bb1536e95eb72ae7c375a7eb214035f53f3147a1a175cf86cc2dce. 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/84de0653-8507-4f09-a9fe-a5b8a086ecaa.json and https://artists.proofprofile.net/proofs/artist/84de0653-8507-4f09-a9fe-a5b8a086ecaa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Briela Ojeda * Flotando Juntos * Cloud Sounds
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 0x43fc3b35d0396e2b7681510c4ef3b69a9bcb9d54ca5297d846024e914c23c531. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM4TX2463369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75546fe98ed5dfa5f492c52d011b0ebd1c26026690aac4bf7f9be63f5914a5d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/UKXN22487528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf0fb8122dfb6b6167c6df62bd71e52b7ddb2610bcb400a77ab5863cc46a8dd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/UKXN22487525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d85bdfb96304c41afe66cdb0694ce8345149e3b22969045a3ec7b8f13f8cd7. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBMA22387837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf542965a822ef381d2fb687f81d970db1e17530b0b2f5e02c47f14184bca5438. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX53U2377313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2975d02b50f95483beda8948ee041ebfdf19f2ed1412beb057ab409444ccc1. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:50Z), 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/GX53U2377312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f24f584f75054594007c20be4b8614d87e18f78ec324fd6fbea4d6636b4b9d6. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:07Z), 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/GX53U2377309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457ecc1e599b62c1b93cf2a29994258c7d8ac7a7925c276282b1aaa6c519f76e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN32355074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c01fbe539da5e39566cd1d129e17d74d2884a1b7a9cf73fed2d4f5cb681e95f. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:19:09Z), 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/GXF9Q2428265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d7f508d4f2b70d41782fb0eb8e13e3b103a495b4d539775493b1c3dd82dd5a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF9Q2428266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72fca0fda2e37fbf0fd9eb1397be14392e5740eb92ef6414a299675a2333114. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GXF9Q2428264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7822e0d44887bc296c4b476d6b1bd6673387002669a42a731244d4e2f3db4d2. 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/GXF9Q2583791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451a5846e9bc76e397b842b92d603d62b5cbc67369f342ab4c73832a3cfddea2. 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/GXF9Q2583790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cf681acec5498f5845b6c26b30d32a30fa485d6871750383e8061ba146ea5c. 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/GXF9Q2583789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f1f7229c333192a0ac30a444d63afafa1039086632d2b2c4c15c8efe5dcba. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:48:28Z), 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/GBMA22517478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da138c0e31d3b097098d4d954f807c43a7eab24502b22037e7e5836258904dd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBMA22593653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e66181ffcc82a9da4b2c28eac3dc794dd374f302574b6f1f5d20f1f2b83504. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:41Z), 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/GBMA22593654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8cbcee402948ffda94af970c321d04d3661fabfd547a5f5f8e8eab6a829897. 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/GBMA22593656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75cb2f4cf0ba769848c6d264a244496710037e9d534a7cb69e32c7979a7ef2a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBMA22593655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9524068617413d913cd3cf664838c1717d206467b598caa8e96e308188b3114c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GXHG92524384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe080811e7d1b791ed7600d474859f352b0d7b190ca35a72e2e48a00fdfbf5c1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GXHG92524386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dfd368610f14d6667160bc5573b18687bb78429a47c372ec82a710486c5a2e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:32:26Z), 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/GXHG92524387.