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 0x01d353b990bace73a1076abd04aa54d0c4c027c795e06b2f4c950dc4df215702. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52d0c559-5dfc-4da3-b107-a08876020527.json and https://artists.proofprofile.net/proofs/artist/52d0c559-5dfc-4da3-b107-a08876020527.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 0x4e75aab85b3c979645c7229ae06475f5e7c8d819f7037dce02a4c4d03687f6b9. 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/QZS7J2245803.
POR TI (with Harry Nach, Polimá Westcoast & Tripper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6ddf219f9e93eea1a8b2572874e002c41c03dc882d85c660c3a6b8d6eb93a1. 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/QZWA32200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901f932d7697e3459d663a6c748cd8cae968985aae5ba5078e58f2e19c5eeca5. 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/QZW9M2263733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03500e4ff6bdcc378beb6da8b244242fe1615f23192113f7aa68041d2cbce017. 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/USWL12303164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d721a25d03aa57ad4ed733eb7fcbae73c1e67128bc99a0e553e89c239cd71f. 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/BK4DA2308926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d834edcd1016c0a1fe27f2989d6c8e7880c9159bcb6a629d63ad50c4ae5d34e. 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/QZ5FN2012395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e003307e3bb3fce1894763d0d71b691b8f9c239cc3b504e96c7acacc8895a87. 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/QMFME2093099.
TU ME QUIERES? REMIXXX (feat. Lucky Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7bd709681a463a5e447abefaaf8ececa3fd3c6315b7f7447203b9c013291a0. 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/CLPP22300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7bd709681a463a5e447abefaaf8ececa3fd3c6315b7f7447203b9c013291a0. 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/CLPP22300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d103f3d9cee2b8f39dd044e1ab5f54cf947aaeb2f2682ddb614ed752653f0a. 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/QZQAY2111348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fe8067f60a53d30002d202804c69d09112bddf5e1286e5076c90be4dc3aec1. 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/CLAA22300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf56c855caa5ecb5551c818df4afe20b16d248bbd2d506e8d2d86d5155c63e. 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/QZW9N2256965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c99f2e1774c031363fd5ddca82ff71b8309817ee62e0992c49ef260404f9dd. 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/QM7282004738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2289706bc602f6021b3cdc68404091ed5e66a13c3948657e458fec35a95852. 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/QZWA32200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca49810a02de6e4dcef63209425153901570b6868a3bc7188901672d7d26989. 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/TCAFM2156098.
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 0xa4131f2fc590098dcef780a9ac3d708092ee5688ceb20f1383c83c48413b9c92. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZFZ42239723.