Reptar is a fictional character from the American animated television series Rugrats. He is a green Tyrannosaurus-like kaiju (and sometimes appears in red-violet and lilac) with rounded and blue spike
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 0xa03b9e63c8199848b1d8b19ca0d616d2422a33a4c8e0aa583597c32eb394bf9e. 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/c620c873-cdb4-40fe-932b-25ec9e672c93.json and https://artists.proofprofile.net/proofs/artist/c620c873-cdb4-40fe-932b-25ec9e672c93.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 0x6fb0dd1a6d1066511b1f91cbc9752c7bc151a131446794ce76a8b390463f3feb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USVR91168801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc44d2c875cb6db250210561ab26b2250969dc168592a9861a18d0b94c0892c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USVR91168802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e97b7cb29efcb1eb5024d8e9d0808501e94d31cfc8dd31f1af22b43cf4ad68. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USVR91168805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1380f0ded135d8665ffacd13a04e118ebf2def58ff9eed7a3b210615da86d284. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBJET1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52d8d81f97aaa8c618f184025ddcee07a0af07ea79133e4f6b998383c2a26ca. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBJET1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a914d7ac3aa4672e45eead8274cd461283ad819046823751aa656a369ea8cc0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USVR91272501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53892d894769043a36e741fecd9a7dcf0cc4c9286a6e782a8717d76f4893a41. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USVR91272506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026e3d3e846187e558c9001e48c71930cc81b251100703a8b7e231c844954bb6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USVR91272510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3adcaf3b5db0cc9371e5245fe5c6025775fa68f9da0e13b15f19673a0c905a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USVR91272512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098e4714ae8fe0ceb3b4278d93109210707529b574816dda0f18e61e7b25b27a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/GBJET1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b4d7228c89fb3756a8477f9a542f6679b38d626adaf1ba5d948a423a653075. 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/USJZA1516002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc01c3c9eb51c7bb4cda0edb8fed1061230d2da5ae8090c491938b084d5f968f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USJZA1516006.