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 0x131f17c15821b4ad8aa0bdbaa5aca46e5c31ac350f2612017327f6f62a392a16. 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/28743cf6-8939-4b7a-89a4-4bd20c9ae825.json and https://artists.proofprofile.net/proofs/artist/28743cf6-8939-4b7a-89a4-4bd20c9ae825.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 0x75cfe6c036b8781b07bc04d4d8f19e52c0b305d0b405f80a0fda78671bb16a3d. 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/QZTB92218676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0bb1cde7696bf0c9a78ded7317dabed6ca482c7923dfe734bf2a647dc96427. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZES52319159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509e4a11689c69a0413973c4867e1cc7f0f28a1012d31709edac99358d5de28d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZK6Q2361406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacce8d22fd4fd49937ba58fca1413017417629d2d56e78291be7a2d453ae638d. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/QZFZ62442381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5175a05964d40e70c04e1c0e8adb5b6e90f59ba4a4ce3474bf8500ad41175f16. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA52594468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027733284b8a5de42f5ab80369bbfd42df2768a8e1d3fce2e9f3faa614612ff8. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZDA52594469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233a70fdc249d78cfa402c6318c54ff2a122813a8e307c1e549724deac311456. 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/QZDA52594471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9088a2355cfc028aa6d8adaab95f0470a49c62cc1a0a1564d07367146808862e. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAJK2571817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140592a517cc935fbdbce3c2650126e4f047cff0358327006f5bb0ea879338b2. 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/USUYG1517604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140592a517cc935fbdbce3c2650126e4f047cff0358327006f5bb0ea879338b2. 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/USUYG1517604.
All Sides (feat. Gas Gang Saint, T.Cike, Blueflag 1900, Dray Day, Mad North, T Boe & Blue Benji)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f45b3b936cef56c0c577cb12cf1a00f79b595db132f791b40722f61b4adece. 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/USUYG1514224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b37ec7d954d5bf4e86d168081c0f5e308462a841f519f89ab19be80af9ad12. 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/USUYG1514226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a2501bc7bbffd2d831be6f6e7c0ffeed55124ec4b6cd864408d6e138b4a624. 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/QZNWQ2398942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558d7ec828d811927f2d212aca61f306a124ae2bf97087335d3d0a11c6cddca8. 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/QZFZ42331527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3732b7b3844fb3dbf7c40d2a6fc8c94c4bd023866d88ec2a283b0f9469ac01. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USUYG1521848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71feff7fc14a968822265dce2d1955928873d65b45bb022399b4acd5b5154d93. 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/TLVEM2400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f179a1abad48abdb22f668caf51399e580b9b09af89304673f9dd9134676bb. 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/USUYG1552345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6d9e3ecb3f4b386f32b6e37c9decaa99dda7c9c12720a18932e318fc1f1e9c. 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/USUYG1552346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3afcfe3b3a183aee6be2885d8428057957297fdebc897c427a50b1f36977fd. 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/USUYG1552347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2e552d3667ae5d81bd7226df33e3c53604cfac17e5d68cd3dbb530613c7835. 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/USUYG1552348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae314acb2b43410857e0bd5934bd63fb90386609acd7be61c57500bc7682565d. 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/USUYG1552349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8f9dd222efd4c781b3b55b02a33cdd4f3a5e38220ff4591bb25fb264d51f2d. 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/USUYG1552350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb537552e041da1f0191abd4f2990346d69f556a23d4e6891f041e4befd224779. 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/USUYG1552351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2341caf843317a39e24838da21090bed877692b59c5d19eae938de15124bc8f. 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/USUYG1552352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aac2058b2b0e5772b398f00ff1dc2268282d428ffd573c3fdb5e7373021ab5. 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/USUYG1552353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee0195732fec67ce4397d563c237192597cf93fc88e570d62cd50425c612c7. 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/USUYG1552354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafedb84a9cfc9d79dd372f87d76059e2e3eb39b8d7d102f1af87642698659f78. 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/USUYG1545641.