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 0x18e090320ecbcaf9292645805ce1e41b9c4cbd3fa274f1b3242a27eae14da881. 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/0a7342eb-dfd2-478a-b5bc-7fa2e8dfe963.json and https://artists.proofprofile.net/proofs/artist/0a7342eb-dfd2-478a-b5bc-7fa2e8dfe963.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lofi Girl – chill beats for LEGO building
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 0xa5414b498e305255661fcd6058c29a14b9958e13cbdb0ecd0dae1207c6200735. 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/UKZGC2306956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86956184cf57d4d7c6aa994d1e3e706d55d3a8211a05401bb2c7e1b94059fd64. 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/GBKQU2204505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f26d547cbeb03e38dd8548c651029829bd7525b96730bc6a08f51cc31d445b. 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/UKZGC2306576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9877df20afc9b70d56011d533abe24e0244e24fbc4a14dc1b0c9938cfcd14325. 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/GBLV62030598.
Lofi Girl x Chess.com - Chill beats to play chess to
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0d1f2df1e6e8737f8f959051b8d5b57e62ba6e85a62f23e0f78b7caf1ac8f. 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/UKZGC2309071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9c91ece68b09dedab8065eda6dff529a10dcf601f9c777c033be3ff6f4e898. 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/TCAEZ2059181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6458df93db7d75dc48c5716f967bc6cc1d469b4e0e5f85b9b52cca2c4362e3fd. 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/UKZGC2407668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86956184cf57d4d7c6aa994d1e3e706d55d3a8211a05401bb2c7e1b94059fd64. 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/GBKQU2204505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79729fcd946c11aebbe97e4419a1ae89ac58fae47d928f4e8a3b450d1d191de. 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/GBKQU2144254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcba0fbfccdd6a6f2a3cb82204d5a708a2fc8b0b170395084999c90d1c2feb7e. 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/GBKQU2144259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbed555797f11d6d01e5609ab5df5f52d0ed5050e0a3fe5a3b8a36fa61ff131. 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/USANG2458171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbebaae097629d81b941e7cdfebb3f3f2a6fe73f1ed39d0ed9b07e638e61116. 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/US3DF2493659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fbfc2dadd0e9ad5b902e789f156ee58ac773926cbf54ceaa3b13155dbee1b1. 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/QMANG2240435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905667d2da66bfb615f9e4e24683e25e6577e61609533a7458be7e4fbbb10104. 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/GBLV62204905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1049517fc9c16fc3681b16626e97a4be25de40f5eda8cac101978ba8bcacb. 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/GBKQU2094059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3052fa1252a113503520f040366d695278b093dd3961d16e7623f8267377674. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEH742419013.
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