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 0x57e898daaa5d39c2ac3ece99a30ca1058bbbb657083348057b44a3acd22c5f82. 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/73f53baa-0832-4e03-8cdd-03ba9b251c0d.json and https://artists.proofprofile.net/proofs/artist/73f53baa-0832-4e03-8cdd-03ba9b251c0d.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 0xeea7c11dc3c839b961ca7de371dec28137eee39f1d5e50241e3f2f926b40ebe8. 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/GBLFP2001256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d1b8fd264f6ee60c7556a10f29943fe593c37c0b8d0555815c80f1971bd99e. 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/GBLFP2072421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9389ebcc5167730127c91afe356713f1f5509c00421a78f8c45f7c9639b8e60. 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/GBLFP2093439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da7eec5d19b007431447d87ef72a9a8ea1c0206216d5040c67faba0a3e7075d. 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/QZS642228554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e650fb599c631104bc57f7828af2d5587d39792f38bc24838848e7e27737dce. 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/TCAGT2367407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c8ef991ffbe1ad658c69f052c83d009e0cf5a45cf252e36b20db00702be1f7. 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/TCAHB2383566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe892d83776c9e7630efd5557d297a95c6a6d767aae9dae4d4bed5180c2c0703a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHD2358263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba1a850bdc4f246918b9331678e40aeff44aa3aef5eb53a97880d01e3edf26. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHD2358270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c37ec42af525b20e1229253822cd0e07067feab4ca50cbee73835f2a0bfca4f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCAHE2302409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716e71bf775133ca7e7f3c7c90c3ea4292efd9de1fbd345b6d5d10cc6fc6053e. 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/TCAHM2390429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96338c135d3cd944e7f79f984e597cc0113fc879c572884cf8f9027dec42a25e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCAHP2307898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda341b7c75219618ad5ea74525dddd955e33e038bd64c3b7589198c8897cbda6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHP2317928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5b5e5d3f6b86e44638466ee44714f8ec295b378032bba747fe49dde6a060a7. 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/TCAHO2366112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0276f228c595579df314cccaae3e9ebe4d73837e8fb91b6b051fe1ed2b0a0df. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAJI2591182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe588485a73f871aa7e3aeb21fb8929de0df1d3f527825134f93d691c624114a3. 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/TCAJI2591382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f43654aba928b6bf54de03b37cd7f4478a30dcf3f4d3ea90e182833a3044fde. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QT5M22576802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7539ad8eb09d930f4f6a1032a441455e13bb54ba43fb1d0db6bf3de7a034a0. 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/GBE2D1000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b2b5871f4f9e0d28e576f565074cf58041e9dda2aec86b42c3a472bb7ff98d. 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/GBLFP1890204.
Pure Bassline Anthems - Mixed by DJ Q & Jamie Duggan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b9acec88732b2b4ffdbd8fbc78ea0d4a4899b9ff8077a331ac8d83c2d2c0b9. 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/GBDLM1800239.