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 0x528bdb8141a9dd958c2479651cfb48cb10f1f144cf0e2ef2f06d80c1a598405f. 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/4fc8077c-455f-4036-83b4-7534a626072e.json and https://artists.proofprofile.net/proofs/artist/4fc8077c-455f-4036-83b4-7534a626072e.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 0xff79ba6ce1ba06f935170ec94fc73cd353580a3067443d49847df04244eaf5a2. 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/USQY51186556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbea25eb860143129a8688e3b0c4d0ef6a9c2878a41090e62ad3df2a3f755b7. 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/USQY51186557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07fd0c352c18fa7bc84063aa95fb665a9537873076f4d17883f5dc6be4050f9. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USQY51186559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4406854d84f2508a9950cddb78f2505b9dd66f09d6008cac3742f57b979037. 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/USQY51186560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43154e819739c468e12025e57f1daa6554fff9919651c64f126e5a6a018dc9c2. 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/USQY51186561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a34524057494b2f11005d296997ff458be56889f8182a810b7daeedc4ed27d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USQY51186562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6ad5a38bdcdf3c48bb263c3bc3af8867c108b00c8bdbb8fc508f05b612716f. 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/USQY51186565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5630c799c6828ebfe717ca5c8238c06099697d07dd0c72ae54e99a269a7b39b4. 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/USQY51186566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c46048af5b3dcbd8944eabe0b2aca60e981f49035d666349ac3ec7b8bc799. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQY51186567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d65022a14b596aefea6f5f260c51b2687346c4c0a9c0c85c0f3b12150c8d8d. 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/USQY51186568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bea57f7e865f06c0457218de3209a2c6b55979b10281584a3099da5720580b. 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/USQY51186570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ec2484a71499d3d4937242cd081b3247d9076a25639f58389d0c7f018f9bb6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQY51186571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdf1ddd5326fd3e34c26b365123ceec2b8788b774c4610c18b356bf6934dcf0. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USQY51186572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e92ce40c85104700ebd8e49320dd5b9a42423f48bdd706a10399c0d1978657. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USQY51186573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784568ad7ffef60e205f8f2cfee6d7820487f11ba520f980190bdb1b42a92f4d. 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/USQY51186575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a76a5429a8405137c1f22b2d8b87ba2eb62a7b589905486425a00d099972f. 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/USHKR0940301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92ce6dc9c9678367791f42b60fc2b633c7ae97d2e1268694a1512df43d0c648. 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/USHKR0940305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec262ce83b86a4ef6e95d817f94cdd01b21acfcd8b1582d19f22e9dd1ee9601b. 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/USHKR0940317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5262da3f18df436f7aafe89623bfdf27feb9ca3cbe2b4dd8f3f1d29c1fcafa4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHKR0940318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f67a4621f74b91c9c6f9c0151bcf7d086cfd6194556e4ccc1e0abcbec7e6ee. 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/TCABR1300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ca7c932f76e9dba2302b6ee0185676bfae3f43e2c63cdd5c3f22ad15f004fe. 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/TCABQ1325669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d0bd9e3b386fad65273bcf319222b1609d91f2dfc75a44ac50adddd3f9793. 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/TCABQ1325676.
Cali Bounce (feat. Big Tone, June Summers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c45e2421906cb2bd3b1083fc35cc5ca1979ec1ed18b2f16e2cc88b7086813. 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/USA2P1603695.