Laika ( ; , ; – 3 November 1957) was a Soviet space dog who was one of the first animals in space and the first to orbit the Earth. A stray mongrel from the streets of Moscow, she flew aboard the Spu
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 0xefefff7d84cc42b05034f2a987f79bccea1579109f5aca7113c9ccd22ff1159c. 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/24a8be4d-019c-4cb4-b937-c93d4ee7488f.json and https://artists.proofprofile.net/proofs/artist/24a8be4d-019c-4cb4-b937-c93d4ee7488f.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 0x4479a4016d5ca42a52452e941c79ad527965393b6af20ee3149b573dbde4e968. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GBBNZ9400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1987f87ef2eda69ac918ac3a515d839f60fc5ee16955c4651d5092b20f0edd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GBBNZ9400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f148b599b6aa1666274e33bdb4506d4208730cae1c14a86194e73532608bccb. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T08:13:46Z), 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/GBBNZ9700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a84e335eee24d67dc8757a7e15bdfadbe78703338d4827a245e95b4839d4ef. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/GBBNZ9700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84852c8528a7da8963a828fdd8a06b088c802810d22e1544e6b7e34dd956b77f. 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/GBBNZ9700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f331fd1da7701d77fb1ce9e194af0f408952111fdb66625bcfb8b9e3fc3374b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBBNZ9700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b057aa7313966d40b511e5419437f06f3b0788cb5f91d919f870e04a17d888. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBBNZ9700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19378b6b74aa3a6a67991692a4d0be5445390dc3220dd78719f0e45c37674ed. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBBNZ9700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b01d4171f7a68ba907842b5297529ea079e326d2f025b913119b39d1f62277. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GBBNZ9700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93db1b6041b60e778d2affe6b1ab1c55e58b4a8e4a8473995bfd233db897b668. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBBNZ9900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cbfda76991e9e3112718a04d62531493bce911633e42078dca9c5aa332726b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBBNZ9900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a18833bba84d6e0c90415cd5d1c9e202cc14c0bdb21f977678f2bc98d1b0e7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBBNZ9900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0fcb57421146c9c18db7fb146a4377d82db7014310a21cff7609f33b53a7fc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBBNZ0300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060e2460deb5c81ef0edcbae5368f3ca156ecdbb6dc91608583e6bb3b78b4149. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBBNZ0300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4a8469af373c146cdd30092fda51b56f8e2602c323cfe07b4851517ae20318. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBBNZ9900040.