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 0xbf004a3a6145dd3d46c728f1496a69b776503445b7c8dc91a44afce64d4e39fd. 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/a56955e4-c1cc-45ed-863d-e5b0a2a02f48.json and https://artists.proofprofile.net/proofs/artist/a56955e4-c1cc-45ed-863d-e5b0a2a02f48.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 0x2be56dc8411a82eaee9089b57ae10dcdb03aeb4326679e6bd6db13c87174d8a1. 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/QZTAZ2490691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e9e241d44150f0afed1030465f6844b65f92cb7ab4926243ce94895db81802. 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/QZTB22422502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef3594c45b8ceb6f2c94b5366752c8586364a39b27bb568931d145922f6804a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc066e460de909feb31a61b1a67dbb6229f8a4a0413d124734adc91f7f181139d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1619dcf41c0078d27c6f7f4a6d09ac0b001f60e5cbaa861982c307f2fa09d6a7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06702d186efa962283b37631df8cb3e6d78533e7244ad36120ab86c1c0b0d0a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/QZZ7T2481674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2362e88ebf43cde070b4d718560903e9e03e42a5aa9be43d3a7753f5de51c89. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15f093fde43019e94ebf6aa39844ab7bf71e83ad2bd871852e370d391dd40df. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff1493d285b696a0551ece46587190f7efc99a2bde9a0f43c12b83ccc896d8f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437036ce4d27e45a8bd1dd1d700f6e20f384220ba6422f4d8aae4ba722e23d13. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583fea6de82b206550519228ff1b8d8c509e70dee15453bb06ea9fc4b756aa4f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7T2481679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3218360d9565c0fae4ee242d64400e4bbb57fcd7a2be49eb881628c01d6bed. 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/QZZ7T2481680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2accea0a983416c49706851ac1a522e1e47bf897ea0e44db4c13938e188fd9a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7T2481681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e38a0c409e40614a64fa7a2f01fddcce5fdc08cf7fb84f9e96770447396765f. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZZ7T2481682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd281074fff989be4ffdd89c838f539ba18e8a8ea2d4fbfc7c77f997ead5edf25. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bc61993f3b78f03b7d1461c3cb3bfc5b73e5f1cdd88f19fa6aa819b4e34e11. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZZ7T2481684.
Strong Drinks and Stronger Women - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240da0179138ee8cd9f8efe19ecfe6b127545a6f1d371fd51c8af164743c2c18. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7T2481685.
This is How We Live - Extended Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8249d4e252ca5c51d306160bcc49e8cc8b2da65671bc00c94fddb13a024717. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZZ7T2481686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62765cf49eddc0345da4b7bb5f32929e9452efafc347aacfc9b226e8e201adb4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6F2541236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91db6a8ffd50878820106e523576858bad7269e73c432ea81647c605e680b42. 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/QZK6F2541237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc08320513641c57b4e9e57f10dd1f35a7c3ef6ce310b51b253868d9f037ede8. 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/QZK6F2541238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bc861f84761caa16a8bd2bfcfc51bdbc2e75b7819826c4a3c0821a6f68816d. 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/QZK6F2541239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca92cfb10392a56f7e890c7739f77013ff97ff62c7edadf55bf09aaaff8d6fe5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6F2541241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5317652f00bdb23a1aedf83053381ebc1165764b7be1211d9b72255704c84767. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZK6F2541242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0fb011f0e8eafb076edfd95def84718c22267684702afc5cd96f3e828ce2e5. 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/QZK6F2541243.