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 0xe3e4485f6012495dce82c61240f8fd178c7257095f6ba15f0f796f12917dc1e0. 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/e64f0786-7173-40bf-aa80-9438d625e9f3.json and https://artists.proofprofile.net/proofs/artist/e64f0786-7173-40bf-aa80-9438d625e9f3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802f7c1bbd9154d0cf106497a0de61ff3fd0515b008322bdb2bd28e2e7ba9e46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/LVA051400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbfd9cb5dedaccd093060da894744013d2bd6af918295adfc825bed0db850db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/LVA051401657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea168c4e35326b4b6d3a4faedeeccb0e65bf8c53faeed2fd413aa8481223d691. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/LVA051400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599122bd9818b2641b1e7016e0bc171f9ddb99d60932cfa6a69e1fc5bafcbfc0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/LVA051400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8115eea7b72838e8c6a449a1097940526a5352fc5c4ea2ada3a37ee294da61b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/LVA051400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1bc7b4b65061147f086de13c4f61dceced9f129f90414d6f4a192672adbf23. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/LVA051400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48439171e7d6dcc2c6a2206ee5db6066a9562899bd9ae6011bf04c9a0a0dd99f. 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/LVA051400126.
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 0xd8651f52ebe3368871be2cbab64d5e38e536b30011bfea21009f5d0824bbaa14. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/LVA051401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943af7c04a543006f08d6f66729acc0855fddb23f84aa093c020c797bcc24216. 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/LVA051400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261dac536a1d01d6f60ed66de224203f824c4b7c8429d7438ae57db7bd42990d. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/LVA051400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa020dbe59d476ed24d069cc95a67662780a105012c658c7e3afc420bbf368464. 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/LVA051402090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adf04e3dd839cd0645b3ffb3042a5a6a30bc69c8b70e6910d8c9185c720a576. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMBZ91663036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a8594037d97f9cf536bda2e4eee394ed35fdf07aaf4ef87b9bee9385c4c1da. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMBZ91663887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c59b748fedb80ae3b6870605fb82498bf4ad5e37622bb1a90f04478dc8aff9. 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/LVA100600350.
Jauniešu Koru Koncerts Skonto Stadionā (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4bb3fd477d3a0330b2001f407b54333feb887c9a8edde2d128195893c102e. 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/LVA100300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ed79126f8fbb5b5aca060f3af7084ddd0d3c8f2010c0a9434e97562e62d457. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/LVA051402202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df92e0c9c17d07cbf36dcefc68f5a1f093178d752c21d2119aed9ba2beb8943. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QMBZ91663879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497f78058b35b4cd90838d7f20f5937e8644805f38f6d34c3d60a52e34080d68. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QMBZ91663884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50fcadb7914c8a1de3bcaf76f7b60942c928b7b19d660e8f4d934a3f32f282b. 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/QMBZ91663889.
Latviešu Tautas Mūzikas Kolekcija / Skaistākās Dziesmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa975d9e8cf5f02effe190d8d0a1b6f82c42bab708dd53a67c6e28755df0629. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/LVA171400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba88c7a33b49bbc6e4bc5dd106c32fabd4962d0af24dd61439aaf67c75ac15c. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QMBZ91329474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef61cc8a331b9753f6742dd1be5977f83b2197b7c7371fed6630e3916f5800d7. 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/LVA100600353.