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 0xc491527c1b9c71976d69630afa0d1a7a033336b7f662e071f103977fab17fa70. 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/21b6bd87-5018-4050-b60a-9df7f5abf121.json and https://artists.proofprofile.net/proofs/artist/21b6bd87-5018-4050-b60a-9df7f5abf121.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 0x12949aed79d3b167d7a45344d3a9a132dbef0bfed40f607aba8b9441ca92d0cb. 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/QZGH81900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d4e4701aa4ca7e7d7293d9f36cb105b2be125ebcfebc05ee8b6997a7997ecb. 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/QZGH81900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe29b8e64e7bba49ea2fe7edc8b27fe40eafb2fae2d591e6a336493b2706379e. 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/QMDA72151126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9121fa10384b484b898936ca9fa7edd84d6ff4fa94638e75c0cb75007c4d52a3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA72151128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe075a43e1595fd46487e421af1e85efb053ddcd8f6127e27acf08937cc86c60e. 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/QMDA72151129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d4e4701aa4ca7e7d7293d9f36cb105b2be125ebcfebc05ee8b6997a7997ecb. 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/QZGH81900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7cae9a7728a1141191cd61105b4b28a2ede1f3550372786ff49e36d0ecfd73. 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/QZGH81900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40075b9c4926b86827b2469fe14af6a2915fd50226a21f2ec1954e42a765372b. 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/QZGH81900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cefbfacdd4625936fa32cef324473e45d068750c2d8283d91149eb11a9d20db. 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/QZGH81900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced7d99f03608753142d17e89511b2e8d857ffdaf62793834e85add01d474f90. 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/QZGH81900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddcbaa06cd7143e1a433c641bd8863060d5d4a7c44763c57556145c70549387. 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/QZGH81900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7a0660c3818f75382536ad0a5b2d20906183b093533e02f0fd63870087e523. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZGH81900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481110eea615d79aa1b95245fee52a30b0c2080b5525b7b299e30b8b76904284. 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/QZGH81900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19258557a175fecb264c8750383a15ea93ab9bc56b8887dae1d8db178e31936b. 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/QZGH81900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2218407f9a6c92102949db9fd44d46d6da242a7e70181f32cea6d92480cd441a. 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/QZGH81900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2773a71aa77515a0f63ee793ffef30dbdf038f39340731c9eaf7b31a51c07cda. 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/TCAIA2494354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1941e5d990c4e3d9bd1b4a1731815b6100f2c2ac8a08c7779013cf4393c43601. 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/TCAFY2196831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e746235aa7537e879142c6aa798750f374363ad56225873d745f21a58adf757. 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/TCAFY2196821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d54a7b7e6728f85e33f5a11bfcf3cb40dd171a0803fa4fae2c308c4c68ac8b8. 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/TCAFY2196844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bca987028530b7c40d509e98eb46ff7ee31835964610afe395b08549993e4d. 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/TCAFY2196887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603c2a9fcab559abc4a9d355684fd7905bdf41e5d77456c0c633805677727150. 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/TCAFY2196898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32c3bfa6af0056136a4934e0b25efbf63400e8ab421a348883d6b262bf35ea3. 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/TCAFY2196934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdcbb3af75509d01c5e7b8238fb1bd1d05a304fcf90edf22cbd52519d64be69. 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/TCAFY2196982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a8a5630393e4ce075ae25a5af95247f2dedfb01d8b6984cfa74caee1ee9174. 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/TCAFZ2111895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ef8ec64b41f031b32c9dc9c56e4809eca9be628613cbde506211228b6e97e3. 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/QZMWW2163273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33c4bbf836cd6032577a2a58d69c1f96df6da0b035864662fd985d086ea99f2. 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/QZMWW2163276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2229a09cce3db33a3e1d29200e5ee75ccc30120abce3d5b6aad3ddbf6cfa8c. 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/QZMWW2163279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3749f5f5ae9e4f842e980794e5b953cf9d99ac9c05bf2c8d4170fd7b860465fd. 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/QZMWW2163280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c81bc860a011060d743ff3c66a824e520dcbe129f475306759953234be8699. 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/QZMWW2219182.
Larry Lobster 2.0 (feat. Anti Da Menace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8d5f4edd5867a64aa26e601b6f6222b79de5b0e60bf8934d6f3d7863ddaf7d. 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/QZMWW2219195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf67058718e4eef3099c2c958f027a71e0974088fd86637f8d282022b808a82. 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/GBUM71900575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654efb090d7c2610971c35578cd4fa6e25b5627b835d6d665207d8d53a7c870e. 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/QZNWV2041264.