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 0x2b5c8888485e01b8016bb4267e4d077b839b733d227e71a2a03151d4e79ef8c2. 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/4823848e-d8be-41ac-8833-0de4e5d48497.json and https://artists.proofprofile.net/proofs/artist/4823848e-d8be-41ac-8833-0de4e5d48497.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 0x566ac04debcab44bd092bd6a6ed66bf6af627045c36c073ec05f68a28800fd47. 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/AUGBT2487475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077bf22675b8dde50770d482388c0cf894a84a4f34271ae4e0998948448ea370. 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/AUGBT2487479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3cae9d1eefbeee3db079302bf0c7a0f61db8fd7e8621edc96d5dc36ac293f4. 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/AUGBT2487483.
Main Theme - Lofi (From "The Legend of Valkyrie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3072ebfa147647df63292b324a2f04920ef39824199891e3a474954be741db6. 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/AUGBT2487485.
Main Theme - Lofi (From "Libble Rabble")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83825853a4e535f98b29933075bb908d8bebcf8a16c212493d3068a867477293. 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/AUGBT2487488.
Ingame music - Lofi (From "HOPPING MAPPY")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302f8353dffc9c52fe5edf907c6dddea0a986cde9083a322806bf16b7d4f0ddb. 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/AUGBT2487489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81914e891b44f90ccdfcdb1c342ded103ff8d7d005871eff05d69feb1fcbfa4f. 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/AUGBT2487491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3abf460be35c6d97b3884368c8c537afdfd6af6a0389ccb8e50b6a2aedbe04. 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/AUGBT2487492.
Galactic Dancing Big Band Jazz - Lofi (From "GALAGA'88")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcdf9841dd00eb6e2e41e2068c899ada3aa66199e3e90c2fb74ab0206513b43. 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/AUGBT2487493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19688ae50323375400e98e6a2c71e981a27862d2e4fe82c28818414f667edf92. 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/AUGBT2487494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7316b23a33055c8a13c32130ef19a314783011be54a2e89aae565a199f540581. 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/AUGBT2499360.
A Technique Passed Down - Lofi (From "Shenmue")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e61d2f4c47d950a133c6ba9c1b8c6db4fc32e6cd98dc666601ab6a7a117f1cc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUGBT2499332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308afe5a225aff53cce2f670416ecd22cff180b53546f90e368118418d938f2. 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/AUGBT2499334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dec7e3fabd5272e37b17bc204e3ac0ffb8c3263174a870a1731863428698471. 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/AUGBT2499336.
Nozomi's Confession - Lofi (From "Shenmue")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a265d7a758d71b44767245eebc782f5b476351813174773eaa3bb0e1ec2a0b. 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/AUGBT2499355.
Memories of Distant Days - Lofi (From "Shenmue")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf210da9d830ba6ce273d83dd7b89ac53254906e61ea04b57d5220e780a2a018. 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/AUGBT2499339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf686974e99c36d44c3b722f0f0e66be23e6004a62d90f86b475623b7415359c3. 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/AUGBT2499356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305d2adc078c9d7f80452bc0f7e81f03fbd36f72ddb248e53647c8fb20b4463f. 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/AUGBT2499357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc45c9cb082f784458519055c11331fda4e16cef440e8674c58b5b2c194b2933. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/AUGBT2499359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd81d6c84ade661455574dfecd18df0ba0c86b78a2ec354beca89815e2f8d386. 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/AUGBT2499325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff76babf9fbb47297707ff797d9130a2e7d2f9592666d1f5a08a26df69be9a. 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/AUMEV2508831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990eaef69d357f9d2b544e75a97055e4ab45521f7c82ff11632b83b4fabb42af. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2508827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7650f4730dea70cb65998c2caf59427c7cccd63e627d10bb8538e3d1e6018b. 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/AUMEV2508832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678c9a60bd504632d3cbf09150e03cf8d14a3185c78834d836a32df372427422. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2508828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99597f825a7ceed372e3cd496dfc976d81833fb2114e4ddb22ae1e3ea663b22d. 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/AUMEV2508829.