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 0xce01e3f5e01a4a37983cf72c9b76ac21dc6ad7746f39e6f5246f4e32affe1eaa. 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/047215af-c803-45af-8d13-09af33ad0942.json and https://artists.proofprofile.net/proofs/artist/047215af-c803-45af-8d13-09af33ad0942.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 0xa7619f46e44175b3027944be561eb696ea2b3c905727bb9c3c40661902ee6f39. 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/TCABG1214644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004f09ed1350eda0c1a20c85a26b648e49b7d1113ccbbcf63714db323c22e516. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TCABG1214645.
Knock You Down (feat. the Jacka, Fed X & Ampichino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb2454e451b5455169bc46f32af9572f52934df7c795765c5d257d300082dc1. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCABG1214646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013c80b75bd5f542c2240df51c0e456b47b56f7ee1ab911d4acf67000776eb86. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCABG1214647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa69911dffb0cf7571feb09efe9bf73714a612813753f8726ec510eaabdced0e. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/TCABG1214648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c13d5c7fed4ef1d6b9a92ba422ef5e04682ccfb69b6fcf12ef60d8bb1e127b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABG1214651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e7c475b7b783f219de673b040840072ad8bf5c172a2398c3b23da86968daca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABG1214653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934eca808501cceda810267fb61f71cc58dc721e3f757c34e97c08dc82e956f9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCABG1214655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee85bd2cecf693a25d4563299b469c04d76e4a6a68fb0ae65822f01d71b2ef5. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TCABG1214658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3072d3619d5a215e58f8a0d401e874f41d3627d1e92833aa7aa4e2b1ee217d6b. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/TCABG1214659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ee2b58beec66a57176824d90feb0bca48e01be5ff200db471df6dae2a0ba90. 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/TCABG1214662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc687ff12fe405106b3eff8381cc80e72aaa720aacf2c8f696a815cebc0b9f1. 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/TCABG1214664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f79ac1cd9b9c14eb3412d50b4af0c3c5fd30298c43f58cd4aa331844c70b86. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCABG1214666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc393ae7fcc88e7698cae920cb5aeee653357ec7954f0822fddd472638f4269f. 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/TCABG1214671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f98a46123af8dbaeff9c956cd7ae04151e2bbc12b9acbbcab06f011e1f84f46. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USBAE1203545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71120fa2f6fc065a8c65761cde70b35fe9ece53ac7840c49539372970106a323. 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/USBAE1203546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b7196ffe4a5cdaa12fc073662a6a517e1bcf61dd1863a8d3e47dd760a9601. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USBAE1203547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb87fc3dc839d99ff792a781837badd0271fbd59f5661b8adf4aab4b9aa98c0a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USBAE1203548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3030fa365becd851add382771927dc58cca9577c0963a1a927ca4b0877f6830. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USBAE1203549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9870698bc131fda06ac05a1db412149bfd4d820cc7d6467d58b7680f09cdd7. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USBAE1203550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57bd2361464d1f710ba83b3741eb1bef7b25460680b76b70ecbc06764baaa5f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USBAE1203551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f764f0728580d4dca2442ae150b8116e94b63241e0d3537ea0a2b24440da12f. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USBAE1203552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee1ba9fb7e37ca7c16b8d5c20f2944df2ca9c099e0dd5f74fd6ba9719e6b19. 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/USBAE1203553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33c3555969464e67bdc0adacff5ee45a1fc2a82e2debd3b431a8f830e439bc1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USBAE1203554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bd39eb789b366501462b38c6d5c5cd771fb703022250dc752afe50ac2d6bae. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USBAE1203555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6034dce746f9e252fe718430b85bee22a1fba2f8cd545027fa99811c1398bd. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USBAE1203556.