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 0xa29dc1a015d102fd04971da8a5ce1ffeafc774c1558d93cbd6366b6d05fff61e. 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/e8d87fe8-0864-4a53-ae13-978cbb71cd86.json and https://artists.proofprofile.net/proofs/artist/e8d87fe8-0864-4a53-ae13-978cbb71cd86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Three Days Til Christmas (I Have Dreams)
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 0x35cf61b07a7c586119652ab003fbc0a419cbe2e5dd0770022c671649bfd8b615. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZWFS2445455.
Thank You So Much For Having The Courage To Help A Friend Change His Life For The Better
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c6cbe4d2079bd1a37cefaee2f5566627243216ea0940903b21c178078fad0c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2445457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ea41ffc07812230647314ebc799f6d4e22f87e41c6407699b3ff8bdc9f9345. 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/QZWFV2469319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41590d4b4df60d372c9e9e6bfeb89bceee5c31ac21b2a2956366d24a68e3335. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZWFV2469320.
An Apparatus For The Lack Thereof (Azalea)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a63e9f6b52628615db5051101f7a6f94736dfbbaba1952a16404a8310cd9c5e. 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/QZHN52585458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa749f7ec51fbc2de9c92026b53b9a5f84a7de8db5dae52c86f5916a79e8205b4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFM2406948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27616febaefa5ddf1ea24f2cff05f50ba7af214947ed2d54d02c78d7a4597d07. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFM2406949.
Virgin Sails (My Heart To Joy At The Same Tone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc425e1b270e8140ee030401469393cbbc74547a27b721b3868133b4c5fcb0b0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT3EZ2485302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063e8dcc816a66fda96295ccdddd07a9f9643c5caca0ae5dd63e7a057f0ca88e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT3EZ2485304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9f43a0d626df986b5fdd776de36e529a53249bcb15a3574009d4d842a72d02. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QT3EZ2485305.
No Funeral (Killing Yourself Is Killing Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b36c67ea281e9fd93ce2f110caae0fbf75ec7e9a2ae2818d63438193843489c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTAT2531127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd67a7be15cdedbc39f0cbab8ef77b590eaad29023f177dbfd552730e462b777. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTAT2531128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad9be83ba8d1bf49782598539b4982a0d29906a53f8a8fe71b34f4c80d2b17e. 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/QZTAT2531129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43a96019df9a96a74abb78b2a5e06b7ffaaa650af229ce6cf66f9bbce1bf307. 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/QZTAT2531130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05535b95eaccb00bd2ae3519cdc460ff668b37c375c03da076233bdb7008fc8b. 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/QZTAT2531131.