XXIII Vispārējie latviešu dziesmu svētki
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 0xbd750d726d7721388ef5c63438ec7e365a849fb16427a74348a1fe9712504ffb. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41edb7ef-d921-4f87-a8b9-33c414720fb1.json and https://artists.proofprofile.net/proofs/artist/41edb7ef-d921-4f87-a8b9-33c414720fb1.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 0xb7fe2973c28de9838f97188df5edce81759475c0474bb32cbf0d29645d2b21b6. 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/USA370580437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40cde9df526e5a16e97739ac78bce9d3ea2707368d3bf6e05766c296b623d62. 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/USA370580420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7859399cbc3c842b0928a937d522049a84d87682bab1251da2d2d2dc5859992b. 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/USA370580438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ab3c119f690cc9704645f35b44bdc7c3c2753e70398e3fcabd63eb1401b668. 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/USA370580421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14efe27b8a30b65cedeb84bff063adc7bb7e4b71bdf623eeee3d54f454464059. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USA370580423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c10460fa99069ade9e4e699bd6e46f738e7b92ed137a5dafa6ea1d04d2b974c. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USA370580425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2a255602391049fe75e26fd19c36dd2da7fdf2df8b2b1f1ed70e8379faa22f. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USA370580443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05b6d6d1fb92052da4ad10bf599d755b8422cd911ddd5ee097fdf59428c5f85. 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/USA370580426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913c7965223acb1def2c7f65d21a1abe1ce7818d610c04a74957b24a927848f0. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USA370580445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a3de1db88767d3c68494a408e2fb85a7db56d6c67b6f25110784f640aabc58. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA370580446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af57c4d0e68697745b47265538f6595d3438edb6d55d36c0c44c38664bf4df1. 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/USA370580430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4a38cb51013026d88773ae0d575497efcdd8eeb6075b51df870c1a3a8ec489. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USA370580448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea293cda14d6148171d74e5d8acdf885bef2df972d9b55d74f9ae4f36ae27fa. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USA370580449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe633280c4bb32e94002ae8ba6ebf7bb3aa867fceac4179c26eae2bebbd9e668. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USA370580450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ee632b7da508af91606f2ec8254b3a3bdd05ff579919b6f6b9b476a6432790. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USA370580451.