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 0x0fcab086af420205e33f78ffa54952252de87ef69961e3210ddd2730bf435bce. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73834241-992d-4edb-9e67-aa5e6a36d93e.json and https://artists.proofprofile.net/proofs/artist/73834241-992d-4edb-9e67-aa5e6a36d93e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ten (Iš spektaklio “Geltonų plytų kelias”)
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 0xe388da0c8fa031fa623049e10604dc68e96bcbda2cc66ea0110c0bb4e59a6257. 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/LTA891500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1bc48422713a72b724445c97cf6d452b7ce3346864c17bc1390d3f4ecab951. 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/LTA890100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4820bcd5acadaad5d5d73c73681cf767a2e3ddeffe3570cd15a62fd78d7ceec6. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/LTA890100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad79f3b27e25fec99d4ae35da1d05317e0f1e26d20470c4d563b4882aa4049e4. 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/LTA890100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dd2fa00623c9294d5ea9bd3518501560809a469da3d5e5fdf95d246395aa07. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/LTA890100025.
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 0x64e625d596dc229d50026f61079b9940f0cb206ef2fbdfffd069f5efcc2bfe0a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/LTA892400001.
Raganos Gingemos daina (Iš spektaklio „Geltonų plytų kelias”).
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba7d8b4bd51517ef5c2535d594b099b91ab3e4d99f836c9bfc5f0cce7df084a. 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/LTA891500009.
Vėjas ir vaivorykštė (Iš spektaklio „Laimingasis Hansas“)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475501396cf7c9f0686f109a5be3f5ff9e95412fb277ca1aee99244660e9ae00. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/LTA891500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c195f3856aece53c2a0824cac52133ff43def61633189447e89778fed3cbbf. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/LTA321500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a98df81f4659c838e1d3ab441f3d70a8e38c402653110c55079f3947c74b5f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/LTA890100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570b7205d98b77d3b8aaf2f6068df84bb2ffdfeed95fa5fe4d960f033b35270f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/LTA890100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bf4f8460ee7b7907a22a2a87692e0b859a177bcd20d102506a98c8d5b0f736. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/LTA890100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e0250255a7ca7eac514c3327d0ce368c3e3cf1113638f5390c28387271ec88. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/LTA890100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4872e73335d597cdf0a2d0c5a0891bc5b7a7ac5a1f7c580c336ae9ac3b32b05e. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/LTA890100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745e79da5936d3c7fc0a0022c8460c6515fa4ccee982245af7e8f0252519f441. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/LTA890100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18bae705e809bbc6ffc06c606938336ed1919a074fe101ce6fb3ae0e6b9f732. 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/LTA890100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f7c9418a5d202358edb034605d7311dee6b8d869f83d1924958f9db413150d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/LTA890100026.