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 0xb6c032632c2a660ebdee3be97b0567698f184bd773471f79c4a0ec9f505de5d4. 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/0f7b26b1-d35a-486b-be0a-36d01d64e5e6.json and https://artists.proofprofile.net/proofs/artist/0f7b26b1-d35a-486b-be0a-36d01d64e5e6.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 0x4151e42780fa18749cec8f9fec4f573bc5cc20d0008d373b40fdf41db64fcf1c. 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/USHM82003346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc74f04d33745131124e851bce2c06fc0c6bc7e6778b1b3102cc66016f630a4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USL4Q2052561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399670ecca4bce6989d5163d2df0c8ad9017fa31664c28c72e454daabfca7aa4. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QMBZ92092373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02493805b5bff218aa86549265d1e781946ab105f7cd09709e5bf15905840e24. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QMBZ92092376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa3906144bc2bd9f9b0e2982e8cd9c86ca33c3fec372a666ce074f26317cb29. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/USL4Q2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ad48b1acae14920ac99d43baa274916e09178fa1554bfabb891b7905b2f132. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBUM72204107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969b001a949eea872ad56c89ca8744819a47d315a4d91009409f8f446587021a. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USA2P2357841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821d2ac90ae7db2caafc7fbabfdff2ee6d694c11bd735c7244e57cb6443b896a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USA2P2357844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439f4c1c73495b420c09a3cae34ed0be41e4ab76dac1e3baf8deed588b5fc5c4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USA2P2344868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2a36039a0816deca80bef1fddd7ac80b434afa7531a67b8b9525b48e8d7e3d. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/USA2P2357845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292645c80fad6ca6ede439bb917399d21b79763e352599931b781488e4aee287. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/USA2P2357846.
KOJO (feat. Mulest Vankay, Treble Deep & Thebelebe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79f73df61eecdacca29a7a154700397db8d7b018a27d94efbc42a66bbeb29cd. 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/ZA56E2305995.
Daily 2K (feat. Dolly Ditebogo, Treble Deep & Thebelebe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f04c61be98b681d075976d8f96d05ce0dc4d04a40eb0349a32eca42d2d2fb9. 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/ZA56E2421984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03d116b7710ae2435f7598843734439e2a5648b751ece6bb1c510e5c8ad404b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/ZA56E2422533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9376a8b56358da16cbf730a9d5a5a2b516fb0d989dc8929db77eccbbb46422. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USA2P2412847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889c5f3ca825f2c429eea9036412814d0e5008d9becb1560fd8a71c6e1740072. 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/FRX762105487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68da54368ae4a41c71695066f9699ce04dac3cd18b8c682757bb3c19a25f507. 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/NLRD51968831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab041ffa2767085f4f07bf0be10261e2f64b8070a3906ceda1a8e2519555c7fe. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZZ662322756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb5c86be9897044e215127d39fcb04bf70a8fefb68167104480c570c8d3c34f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZQ4X2200312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb5c86be9897044e215127d39fcb04bf70a8fefb68167104480c570c8d3c34f. 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/QZQ4X2200312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c82c822cb90731fe62190a9e4210032af7b1176e77c9ae2c476a2d08e4512ea. 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/USLD91767270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c82c822cb90731fe62190a9e4210032af7b1176e77c9ae2c476a2d08e4512ea. 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/USLD91767270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ad48b1acae14920ac99d43baa274916e09178fa1554bfabb891b7905b2f132. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM72204107.