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 0xc54921e32f2de3ec9b3aed72291cb902aa97a85786f8c56e06a9174046369ecf. 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/abf9dd23-847a-4898-b25e-edca3147bf43.json and https://artists.proofprofile.net/proofs/artist/abf9dd23-847a-4898-b25e-edca3147bf43.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 0x2f0937ebe97c7d28ba7a34a1da6e9a22ca4ff0274649b512d0fd646eaec1f54a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IT0311600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0937ebe97c7d28ba7a34a1da6e9a22ca4ff0274649b512d0fd646eaec1f54a. 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/IT0311600059.
Ego in Amsterdam 2016 Selected by Kharfi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db84907a80395ed91f8b79995b3ffcf90000c62f2e0c6c07d8ecf02866f999. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ITNYB1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135e92d4fc06e7f99ff4de3ec11eea47a1a2ec1a28b112696bd9d75c5ae8d754. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ITO951700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135e92d4fc06e7f99ff4de3ec11eea47a1a2ec1a28b112696bd9d75c5ae8d754. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ITO951700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2460ac1c30ecb4429f5215993d14c39675b249edb67509f002dbe2492a6e736c. 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/NLYK91800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd9f93e68578bb30c9ae77eb4476b12d262e60f974bf7141a64663bb4dd3d6d. 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/ITO951800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda071bcdc074c5d0da62498718dfaa0b96e13a9164302559f3fb691d47335dd3. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ITO951800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bf280a6f7de94293428f345d1199d8eb96843600ecf6fa5ad98beceb30d509. 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/ITO951800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7570cad0cfc60e7f5f8fa5c2f11ed1307c12def4c7c773e902458254c06357b. 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/ITO951800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d0c9019fee8e0cdd9cb10fde5fcb7d0ad135ee751ed48e26d65ba22ce53cb0. 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/ITO951800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ca12bc4f29cf1359aec2eceaae3a1e68c59fd497804c78aae6c95e9336064. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/ITO951800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0c523732a78aebf45fe9cafa061edcb756442148841ac770f7ef9e833844c6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLYK91900002.
Don't Waste My Time (feat. Jade Million)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7a6ad16e6dd6871c85e427b2b7e7bf56ee2e4ade29a373c758fc057ecbb355. 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/NLYK92100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf61a6d27ff773d9993e4a5153e9d2f56ea362e977137423c715d92b3c05146e. 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/BE5HB2100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d039327d21dc3b777bc1b195f1a74cc3eaef82b4adc3de8b302fc9b70f7537. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITHUR2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb96394f38bb0d7737b029b855fd6f939486679ef67c97cd836b70fc789321e. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/ITPXB2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2699e255020d832c186e236d92b08116f9caff6346d384515cfe88e118a75dbb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ITPXB2500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa20a7490c0183d9c9c1a0f16fd2e443fee7a82c047b17f77851bfdba2744e2d. 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/GBKPL1971157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ece57c7eac072debf4383e86ba52826cf06ce7aec015e4418ccb49e5aee695c. 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/NLYK92000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a4567a39f65acbcefe68940cff5c754e2660dfa8a13ac49dd8b113f0d93e32. 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/GBUM71905166.