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 0xa07c12ddd5163f771f54cba04af824e29248ead415905799b02e3cdb8fffdc19. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1eca2f7c-cdf4-4137-8291-63ca25338d3e.json and https://artists.proofprofile.net/proofs/artist/1eca2f7c-cdf4-4137-8291-63ca25338d3e.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 0xdb5a0388908f5feab052d156b390f8d5bd036d4eb0437370cf13e7a48e6b483a. 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/LVL152301239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed755ef273be90d2bd04f1ad51c545743dc9716b344b3e0ad73fab2acfad3eb. 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/LVL152301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3606ba94d481fb24c99d94353475718f0b6ff979f5cbc4bc3e37450cbc94e2. 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/LVL152301233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1de663d61f1a251e4f30e27379fbb07cd3098317e6bb21b075d2fe1bba4159. 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/LVL152301238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1878c3e51c98731373dd8ce34741b2fd6999be2f435e6164b2f2c0b698d2582. 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/LVL152301232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90f27d8af13b0affc7923c8f9d83647ff20e7d28a5a43e0023edf552fa67091. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/LVL152301228.
Guntara Rača Jubilejas koncerts "Tikai Tā!" Arēnā Rīga 1.daļa
GUNTARS RAČS Dziesmu oriģinālie instrumentālie pavadījumi
Guntars Račs. Dzimis Liepājā - Koncerts Manai Pilsētai 1.daļa
Vislabākās Latviešu Dziesmas Bērniem 2. daļa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339341643fadf0c155669c542454e6c65b65cd8e62de6aa2b6ce8e7c8cc9a292. 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/LVL151601674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc31178dccc9d7141312113edeecce268d062af10407744b80c3bcfafa032f9. 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/LVL151601672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d10e5bb5245907311b97fff41082d2231e0bc552e3b51b7cfce3f34df5c5e8. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/LVL151601671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247249439202ebfdfc5c5209f1bad38006c1283435773bc19688b646c8f44f48. 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/LVL151601670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550a0af7802834bd074bd59d467dbf1f43773d4fdc0992ba50b36e33690083bd. 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/LVL151601669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5026fb9e6624f44add413d9954bb431e1c7dec49ebc93009061bf7d0de6d401. 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/LVL151601663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66d59b7724c2817732c38ea9a739c1523953a2ed2d74517814065aa056c1a88. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVL151601668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279ad0b8184d27c5c1a0f9fcd64672b0ab66f0296fbc878fd14c52b0588304fd. 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/LVL151601667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62379a73fd87336f632028e5e6bfd9fb4ec1b25efe7921cb862e57f3051ce1. 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/LVL151601666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50f02c12f006a7426d54a1310253d5466af3fb6b5bc908ff1d8d8edfaf8cff5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVA101000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e24f9489faf07f055cb03b0696289972d4c3aa5defa920c7af928085a65892e. 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/LVA101200271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945ba96d7f0db07e8cfbf1f927cc97192feaeaa8df433865c08ffdc6c2120ca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVL151602388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf693a33c195196b34d5ab816b60cf213418885f86159effa472bfa8c9bc2d0b1. 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/LVL152400417.
Vienu soli (dejojamā dziesma) [Mart Inc. Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adb1fa57fcd1797de65bd82f5350a40639cd0f35f68772e3fa3f4eec2ffc943. 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/LVL152104808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a9e7a1a80e1d14c0e8ee0b515e08df3b8e0428bba9c8bb36bc5d1cf1bb47c3. 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/US6R21225724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2347b41fbfa2b3d22e7d3b515ec71333cec995f12c5e8208bb4e90dc3dea5d0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVL151703454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33589a345d7b034c3adb8daf47913a937640f1691b682ea3ab80502d4194c171. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/LVL151703455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ba303274df810e7182a2f6b9c82a8ded20497cfe09d02da829babb32322176. 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/LVL151703456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a3ec9a9dacb35afe9d2b4689a0d10bbf019c1a3a9652843cc6f93d79a6da7a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVL151703457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffbeb85d59c34bed7df88a6720ffb745f51de090cb4e3ac6ea9209fa326945b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVL151703460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860c5d6a7c98f35d10ec79f233415e2d0d366e6d567699a81b20f8f6efd67bba. 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/LVL151703461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44befed797841cf1609bafb227789a0d97c4659a9ca17713edefabf18081c3f4. 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/LVL151703466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6f847224f0d27bf603402335bd5757e237fb35288877ed722bb97d0257f445. 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/LVL151703467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72146f90554367e6ff67a5330111c63cf8981e3c8b2c73d76991a9b2e50375a5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:38:53Z), 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/LVL151703468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7368b793e88e6400ec6e726a66ea102ddea4ef954eea7090e95f7e567358a508. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/LVL151703469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8c1e1e799dcaa7a108df2d56d8e12415c0be3b0ce254efdc8e4476e5f08fc0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LVL152003078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b82eeb4a9708636b14d95044000d6c86b7f371bf9eb4c4fc6295511dbdf58b8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVL152300456.