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 0x51a7b46690c7b9fad7997eabd1f06d04dd158ae34e274052e3ae2cc022ddad80. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bdafaa5-bfee-4510-b414-9bff05cebaba.json and https://artists.proofprofile.net/proofs/artist/1bdafaa5-bfee-4510-b414-9bff05cebaba.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 0xdad05aa32dd7a89c9689fa6f701d27bd75be13f0c9ca7bd6ebc66a65f3e5fc84. 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/QZES82410562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c5c8d3bd6db96e4d8333bdfe15dd4e258bdb1571f3a17fbab64ed66a06fcf8. 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/QZHN52467854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc596059f30dd3de054067dbb387f7191c5ff3f067b61ec4ff3d2ddefa018444f. 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/QZTB92363769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b74113c3da5bf2d538781be0995cd98cf7700960421e8cfc2bafbeee12a6e0c. 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/QZMER2330183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf834b62aa32351bd5596221664ee5e6e9443a22fe9ed1a266860d041889548d. 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/QZFZ22118367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471e4beee575398797375a71300514256204c5f71f54f7e34859726a8683106a. 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/QZFZ42126675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5ee7a21a2f50afac48ca33d9acef780b2ffeea97c031ba071df3615c9493d4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ42126681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e59fd678fcd2e4c995873fb6154d5852036e306201b6817a03759c70778fb02. 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/QZFZ42126683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf795adf9955651afb13b18048d62f0b3211cb12397b1bd7f8a2ffdc44a68e760. 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/QZFZ42017465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79341086591fd7a652ebf7edd1bc1a9968c5161f67926cc83e114249603d1d0. 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/QZDA52535941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e3e4ad83193ac514c9922d4f84ce73c23d4f6c6c1e6c741c85965e34439635. 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/QT3EY2456639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab1de721e6215b60d0de7749c2fe31b7d4adf2e1cf04ccbf8bb5164782273e2. 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/QZTBA2418482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d79cf2f0bace4aba3e0bf2786fc0bd5a141ffd4a8d1004dc0adcc1741f7b70. 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/QZTAX2435247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7683b1123514570ac341489429032d22780026b48236b1b17b9f6e9560be93b. 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/QZK6G2480395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ee27cfd273bbe5ca455d93b35668abe8da1682f1802d27a9cdce979e1234ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ2436208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a438a5a71a4eb4d6b9ddd98b4c6236f004495424569c8c21f4cdc3db1e475. 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/QZHN52461399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62156da95b9cd83cecbcb25f125c98a0365bdc5d2e6fed068ca3436a197c103a. 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/QM4TW2435337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b016e699dff2b395b06acb2d7681e307254d6b26d81ec01696375cf970bec12. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ22464990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c726967f2a81369943c7585e2a35da81b452559adffc0e43b9523df5047c4d. 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/QZWFQ2345290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab4a71e714222e2a9b2416cb10cfc1a478625e3fae5faabb758aa16dc6bc435. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFMG2368342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ba0d81ddae16bc4c21adbbd758176d58593c6afba9765db0ab0e2e99b33c95. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMANG2216616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e4f1d717ab408ca1dc370dd7eb91e67b48a5de644b03150b4b5b09aff099f. 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/CA5KR2397607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c0397a73b02c2106a9bc7160dad0b2cf96c06327901c6965ca57611170985. 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/QZHNB2383644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584c04a1721c03e990aaf3cbee932845b18e1e5022aa710fdeb0f4607fa66bde. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42388190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a3781704dbb1715d40e3e538963392ea891124c97c162a16cf4da373e7fc75. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2354819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce01d03f957e57c450f9b66ab6c9e6596c1c55c5d2709b47a5b355dda268545. 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/QZK6N2364006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042e5c3b1e12774d8faf7fd716b43d001edc2ab1c444fc2667c42733402accd. 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/QZHNA2366443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb2e5a52e92a08ea831dc85df3c24ad19eae07d2fdd1e6ba1556eaedbe68b5a. 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/QM4TX2372738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca260fdabd39fe2fcc3ae5e1a98f3e84aec531922aa87d495af09ee3d93928d4. 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/QZFZ72343197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6889c36c8d27de799dbbdbdc4606f16428f440a0b7db188f2590d5b55bb790. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB32245480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6cd31e103e94ef72f2b15064cb44b8c17921ece483f85bb799ea31094796f8. 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/QZMEP2297459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447ed968b642df93e2d8bb4013df7238eb73ba6bab1ef74238a1a02dff8c839e. 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/QZK6H2287308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d82c7b706c499503c595636d955e1ffb9340628e7a33ade74bbe6d9da2122a7. 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/QZMHN2218872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb724b53dd825bfee4694c26468e10e2bce7b7ea1c10b9bf95072a4dce8049d30. 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/QZK6K2244785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18ac06d5ccc6ccbdab8aa4169d63050e49ca36603662fdb78ebb24f6247e6b4. 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/QZK6G2509566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a9320625d0c62a87724482626643072800d57bab6eb497027907b3f73caf3c. 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/QZHN62564428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c9b51bbb85b29ee09d86ddf57fda6ed30727ae13f5e812743c1d7bcd994e8. 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/QZHN82514534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9197a9f8be33f1d7153825e3737f9d109714bf0d65ce0c953d2bc34c1c32a06. 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/QZHN82514536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557e0a0e0a775e93cdbbabdb7c97eb63170d41d68a8969a0464b2e58ed4fb790. 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/QZHNB2584198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3e32a3f5d68e5c7a278876906aa80bc4a5a90a2c9bc1221e9d3aee1860c7d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN82514538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6889c36c8d27de799dbbdbdc4606f16428f440a0b7db188f2590d5b55bb790. 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/QZTB32245480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3769dd428247e0d7fd7c8eb90bef91084b869bc8dac079e62a97e2b67ee2f03f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAT2382375.