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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5342c363a48669ef992b805473b39d92ac0b696c26a1d30af39c570926a0c1d. 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/b29b63a6-278f-484b-8e93-538709028140.json and https://artists.proofprofile.net/proofs/artist/b29b63a6-278f-484b-8e93-538709028140.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0491321cdb3eeb80ba25cdcfe013bfc06d4ecea845bf5f052dbbefd693a1c70d. 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/QMLD61404310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137d316c01ed519075943369532abca08f4412b53a79e9de25e626a3d6176586. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMLD61404303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5df9c39f26d0c4579549568f7f881baa3947edf1fba7c474f921639e002444. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMLD61404305.
Blood of the Heartless (feat. Kung Fu Vampire, Lo Key, Mr. Grey & xshy361x)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60013ec32d14126bba7a2880ba788fc02f6450c32c46a9500c86c1722f9cdb0a. 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/USCGJ2356416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae935ecc6066f26cb6dd61f5bb7b526b7e4bd749a4720d85125da1f2f31beae. 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/USL4R2129959.
Blood On My Chucks (feat. Blaze Ya Dead Homie, The R.O.C. & Mr.Grey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad120b61745693451c48d402cb3c552c718c6da61afe4f3ffa2b8565a5379aa. 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/USL4Q2193024.
Lose It All (feat. Cabal, Lo Key & Mr. Grey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38660a1220f7fc91505d267b211205910ba1ef6927856f39fdd305d87542eeb. 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/USHM92246864.
Bad Gorillaz (feat. Gorilla Voltage, Mr. Grey & ClockworC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7775c4f1689ec1897e7c516195938f844904f9089acd92647539c449b47577. 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/USHM92246871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f516153cb0720bf5397633410067f0c5ca6876c0df6c0bcbf42d990fee0650. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCABZ1439264.
Knockturnal (Tunna Remix) [feat. Mac Mall, Koshir, Joe Cutter, Dirtbag Dan, Mars, Bunny Chiba & Mr. Grey]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e3724c1eb157013efc4d0c8277f2e90781e2bf66f6dbf5e4860e61fa563115. 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/TCABZ1439277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6261f03f5d9543ec69d5bf6c093dd10ac6e12d482c6f8369cad069a86c236a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM81878501.
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
Maniac (feat. Kid Crusher, Grewsum & Mr. Grey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86b6fdf4a36484038f96e0239378565149c28414d6a6b2122049c1f179b407e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USHM91343284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20fe17f734433b31d280fd954da6ba28cab3d0b52f92bf178c7f9e6432986cf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USA2P1869609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd534161a2ce59ead748fd523971ccc1ca5b432f3b56b75d371f99be46c00d522. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US4M31206211.