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 0x42dbfc6f848fcfe0a2ac673a16e074893eba55ce308e77ee21823daf29542543. 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/83d2b56b-f402-416b-8cef-d5ad8fa69208.json and https://artists.proofprofile.net/proofs/artist/83d2b56b-f402-416b-8cef-d5ad8fa69208.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lopšinės. Miegokit, Sapnelį Sapnuokit...
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 0x6a41b9057fca252bd771d69625cadef0aa47f92694a5da0eb72dc442fcc4bf2f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USLZJ1828769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386882fe2b407e9e4a44feb00bff388aa7641ca12686c45ba90ee7b100435d9f. 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/USLZJ1828773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65e1b8b42fb4f5670083ec74acaf54a705cbb71691e8375fefcf7b2a3060005. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USLZJ1828777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c70b862eacde210fbcefd550d274cf2384c1776d0d0e9e2c847f545e4f4da1a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USLZJ1828778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5333313a74a991d51a231f144bad75b9034db207d1d197488a07cf467db3a378. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLZJ1828780.
A-a, Opapa Zuikis Vaiką Lingavo A-a, Opapa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3afbb705140ab5d59c7aefc27dd51729aed751e118f876aeca342510939ea5a. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/USLZJ1828785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1927966826f0b70bc181bd24c1cd63dd13da32681fd3de7caa18d1b8dcd7d532. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USLZJ1828787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3228e1b3c148b2aa4cb7d28f671c60f6893d1612b653a8715a86ad2788343689. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USLZJ1828789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aa729b9127366dda6a6bfb540e587b81792b919eeeff2fd4efe420ce35283a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USLZJ1828791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac0e14b0175f4aef2cbdf202b30e228df579d29c26311464d9fdecbd4c124ea. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USLZJ1828793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53da7ad8345dbefcd4b93ead18983695719c8bbc255700e7eafa96140b30282a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USLZJ1828796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10957ff59eba191e85f4d983a94c8d1ba67ae3e91ec6ad4d84206f6e0b1422e7. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USLZJ1828798.
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 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 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 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 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 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 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.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fdb18f8f903884721a5ecca2b400f7c3f72ab88b62208fe8171ec5bfdea4a3. 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/GBWUL2065882.