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 0xc764644ad7b781100c42c635b883a41b5c426128fb0e67fd4ab73a486ef196cc. 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/d6e685af-bb0e-4e7d-bea3-13238ffb0fac.json and https://artists.proofprofile.net/proofs/artist/d6e685af-bb0e-4e7d-bea3-13238ffb0fac.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 0x69fa675d790d01c2c60b99f840ce80cc4ef240e611433e038b3cc85292fdddca. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZHZ32015493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfbd00d4eb460c5d73a67e0149edef09ae7d5829d39ea95fc3ff28ba6f20cc0. 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/BXPFY2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb602b2e88b717bdfc7f948998f8976adda1c90f77272687f2c280a17d5059b4. 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/BXPFY2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5904306532c68c4bf8f20a06d72844418e0230b16c3ea9362546c01b6888530. 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/BXPFY2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2af3bb2dae17b5c16c1110f4302be6124c271ae59c324ac6a9b8b935a70d8a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BXPFY2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a4e383b4c1e44724b3419df2a2f3c5d888ca19b2f50afcd1f20ca36566d9f8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXPFY2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880f8590b6f1f55fe6dc8049e016b775e4b3106c729a0701044f1620dca2184b. 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/BXPFY2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42101970fd9d3973e0317380bf0cf1c2ce4667715d4a0e84b7dda58d8c6b3691. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/BXPFY2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c46341bd6063796c297ffbc08ccb32939e8feace8bea2e5033baa5370da84. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/BKQAN2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddcba6862fc0c01a4d807eaf1ea08cd15615c922d1b50c28c09a81dbc9ffff4. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BKQAN2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccaff6105f6f3ddb0679d4bd1ec9e217d149e96490bd9fc9b67af161acf96d0. 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/QZNMV2525216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26f2fb46fc71f6f33183f62048f0a2d0480b96eefbc366a6ee3b0cfd3e08451. 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/BXJ3W2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3816304bcaf88bddd654827fdcde708c66c296e26646149aa2c2d89272764683. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BRY4R2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3816304bcaf88bddd654827fdcde708c66c296e26646149aa2c2d89272764683. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/BRY4R2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06000b97427615629d5277f5ce3a3c49d58167d564db850002cc91b9860754a0. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BXK1W2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fd32e13e2c856e7652a82796cb6af4b8e54af88e11aaf9434bb592e6b6e711. 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/BXK1W2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06000b97427615629d5277f5ce3a3c49d58167d564db850002cc91b9860754a0. 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/BXK1W2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5950db51ef16e09c04ab59ef45eccd7121430f9f01d2af6ee7a0559ae687e364. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BKPPF2300007.
FERME LA BOUCHE (feat. Leall, Akilla & JXNV$)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba77df444ceab66a6dd9b9016d7a371234443d96243b2170a2fee2525c145466. 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/BK3FI2400015.