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 0x8f3ccfb916f28abdf6c07f87e790a25c5810e17b95b4ba0e8293165b83bf5f50. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08b00f3f-7529-4831-92eb-d1ebd74b0d34.json and https://artists.proofprofile.net/proofs/artist/08b00f3f-7529-4831-92eb-d1ebd74b0d34.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 0x9b6a5401a79836f7cc00b9c2c40827f1cf72d3c8fcefbf58bec57567465674fd. 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/QZNWR2359974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e0fd4546c1917f0e48106a668dbedc47c2199f32e60b683c9b35ca04e64cd4. 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/QZNWR2359968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f67cdad5be90aead91cc2e79fb7a68b8eb792b803ee39e6afa87aae3f1c81e6. 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/QZNWR2359969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9aad5d6873e7f09a5bfa1a4a373fda22451d88224d793e7ff1a32a5dc0a9ea. 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/QZNWR2359970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8abef5e42aa4e6ba97aa4962d1ad8282c251ee650a09c4c88922f123ddd2a48. 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/QZNWR2359971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fab7a12fa590e14c9d2be4e7d5cf175cf2bdc52aeb633e617d9f1dd03aa7a7f. 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/QZNWR2359972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232ec100229707bf58e6aafa1ffa59db228fb56281e8d890bed1a2bae06407f. 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/QZNWR2359973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6a5401a79836f7cc00b9c2c40827f1cf72d3c8fcefbf58bec57567465674fd. 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/QZNWR2359974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba97d9868bf4301678f8eed3e915d0b7657ab10328bd913d7f0bcb7ec6d2b5a. 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/QZNWR2359975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab4fb2a7a73af95a762f7c20ed5fca92d42c06d6cf29073e7c7ae0c21c7407f. 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/QZNWR2359976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd454e742f68968bb3d72d457b94b881f81722fe12fca6e4bd95f3529eb6f375d. 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/QZNWR2359977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc5fce2eba7070e7d4bc351bd6bd79682b58223c97da609a557603c014c6e11. 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/QZNWR2359978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c1cf83650f3e9a338b3e17c17eb1aab6bdf082af561c6abe6fb0ab855e6a3a. 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/QZNWR2359979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b73f16f9e38ce388d5c2dc22c8ad8c3a26ef774905260a622eaa424265334. 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/QZNWR2359980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa085af7858170ed7b3ea2d2e0b9bb138af67ddf22c33ac519011918641653ee. 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/QZDA72392606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55d6b68b541fee838a96637d480f515bef5f7deb123433bc451d7455b29df05. 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/QZDA72392607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd96c19465fccf2b146f1bfad4e5557eff03026bd22f6eb1ed78aad03f87d7. 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/QZDA72392608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11488d036c112e91f80d0d2d3a2c067b625bc44ad67e4a622a58f42dac17b26. 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/QZDA72392609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b5cd14dcf9cb44667f3ff26af450ffb4b508be3f7658909b88794c3f39314f. 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/QZDA72392610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a0b10604f1d0a28b1e6c7349df0c43cb5b3c7a7d07663e4c223bc48a0d7642. 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/QZFYX2396998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36189be3f9308919e8443fdc25e45543fc3ee64c445e4d310fd82f1689ed7acb. 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/QZDA72392611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6c0b06fc973fbc7cc7ed11f951be65dbbd459ec736ad9caab383b369f6ce03. 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/QZDA72392612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87242a22df864f7fd69a128379d5678f6313459167f23fe74834030640813205. 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/US38Y2408483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab1efcb5005dc3f29885e7296873afab97cac3df8c0ed50ec15650076d427d7. 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/US38Y2308519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caf2419dfdc90eba370b9ac01f41012219dbb87fb7eefe43f4e376e68d495b9. 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/QZTB22291458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3fe7ba65d48a8c6438e5fc2cd17d2cf680fa846dd4342759f10303bd6072c8. 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/QZNWU2224524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf627cbd9c09b31baa1334c5d0becbc43ace41c53f2d841503233a0231a9539f. 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/QZES92212160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b8a78d6c252b51c88864ba2a561f27140636528f07a75e7c8f3e7ad33e50b. 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/QZES92212162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cf354367953a0c4621fde0a7083bdf0ce4c07ce3e3d0c7d6d751050ae641ff. 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/QZNWX2147560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbe4ef0bfac2aeab9c32ebe1cf13310d704daf32d1d5556fe25fdc9ad264a5d. 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/TCAFK2172895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9018f851050bbb63e41c9eff43795e27699bc47582a113c734c6b4f5826a6ab. 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/US38Y2417414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4b0dca0951189d840da79385faf599325631deb31b5299c3f8b66ef38b0a0c. 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/US38Y2417415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36de7f2707f5bdf82420411e4089b0477345693eb90ae889390eb28efeca1bac. 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/US38Y2417417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53619060e6d495c0bbc8686389ba794a9ba3fabcc39ac7f2cf9d9ff728fd4a7. 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/US38Y2418309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b4daad4b3a77cf2b2ca0f8a2856c23ab86e2c16b9021a13f266de0f78af65e. 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/US38Y2417419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9502a22a6483c95c062abde1d01b3c6a3680d18acacbf733fffb7d4ad0d3cd. 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/US38Y2417422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c36809a2f894a9b062741f5aaba8218e59fa9f397ad3163c3c3f3f8557279a. 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/US38Y2414144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550830b49c16f1d9b8ecd0a5bf992411dddbbce519d454d35d4389f0180ef54f. 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/US38Y2418307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781b67d963594974c41c7ed5598bdfa669c31b5f7caacef6e728946c24fbd204. 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/US38Y2418310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46699832a6aff7261e84dd45d0922f0c8297b6933a76e3c3239b2bb0679798d2. 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/US38Y2418311.