Year 454 (CDLIV) was a common year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Aetius and Studius (or, less frequently, year 1207 Ab urbe cond
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 0xa3aa9832ed65c5bae07d4c1a65d00ffc03e90fdb80f44a10cef6292eff3973da. 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/1b8b2bf8-5ee4-4b6c-b422-f416696ccf7d.json and https://artists.proofprofile.net/proofs/artist/1b8b2bf8-5ee4-4b6c-b422-f416696ccf7d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8731a2c6c5b07e743886245b8aaec63034d7393e5cc4643a363ff5c76109432. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBLFP2260259.
Melt My Eyez See Your Future (The Extended Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeb8539aa37e250229de23633169d8f7667ff4787dcab4e280e6ea28ea3e662. 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/USC4R2211735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a00631cae5ff9bc192ff553e4ce8b29ebe945a56e7a0db180540054b1867155. 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/QZVEM2322272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeb8539aa37e250229de23633169d8f7667ff4787dcab4e280e6ea28ea3e662. 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/USC4R2211735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51ca05d46cf4a945bc8a21b6722c56489f120a0f917711be58db499bf2e7f29. 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/QZHN52354046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26669d42c415e48601d8d118f7f6bd4103d10a59e3f67ed9b92407f45dd57922. 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/GB5952300447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474b5f87c5ce5cd9ec8536538a2ed5365dc88156de8711008e2b118884d97fba. 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/NL8RL2500939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b2fce7bd08a0d625a0ce3486f86a7c3736ba097c929a3492afbbb91aaa5fac. 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/USZ4V2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d9a67af2c11a1b0613a9083925311dcb37a99e9b7220bab17d20fc965f6851. 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/USC4R2447760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eab57c00b13ebc3efc39977d146700534725f9e77de2cb6017a0a946cbc08d8. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZDA42445816.
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