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 0x044f0c941df3c7d0ca507442073d48afd2a25c9979e57c552d44f559cf880d95. 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/88979df0-7772-44fe-8093-5633bdcc0ef1.json and https://artists.proofprofile.net/proofs/artist/88979df0-7772-44fe-8093-5633bdcc0ef1.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 0x8d32e54a4caf01a8fed1c8a1986848d89ee5996e9e1e9a90867b04ba59cd80f7. 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/QZES52436289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d14739672bd2f6ffbfb7251dec87ffab6bfabd1e2b7b071780547e0321e5b7. 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/QZTAT2342070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e9fd127883cbdca6fb7c8858979f84e7b5f05974b38f3b7374b12c03c0427. 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/QZNWV2307419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379bfbcb5341a426ac1c482012e263838c78fc9455fe4dcaa13ea0706f12b80b. 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/QZNWV2309449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a398014db05968d24922b39513bd70e51b9c5f7b453c397ff5833c432b6fd55. 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/QZHN42300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b88577bf7bcfaeda2e22ce5520ac1c5b6c891aeaed57d83ca420d748a470aa. 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/AUGBT2232803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5189a8d4fb58303f38e7fa9f14c85017cd307bc7b4d9e422319922498be8be. 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/QZRP52221328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb2d1babac96aae387f2dae0c6c649a89f8b461d907335207fbc28be2c2fe26. 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/QZNWU2275674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814084487d2daccbbbda66ffbc1b9347881f02e9e81dd5bb511e25b3a4161e0c. 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/QZMEN2237717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4a2654982e0ef333eef09c08dc3b4f478503af5f8c6393497ff9adaf98029c. 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/QZK6K2257073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f371b3d6f2eee80405607db467dc3453bad5dd1cc07c5e22193a2790699738c. 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/QZHNB2275520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d16aeb48c45fb12139f3e65529517ee08b9354f10d01fec89e6d0576fc402f5. 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/QZHN82227971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c63a4d9ce51721129a4c0ea19ed52cf1db63ab129a312e9f238947ed5ab732. 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/AUMEV2236169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d56cbf397db0327f8e5cd8178c543e7b056fc5bc23a84af2bed0ce4e4a59c0. 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/QZES52200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d82417a79f3b3c9a573d4edc0ebd7b3bfc869c6adfc93be5af23da8a5bb78d. 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/AUMEV2292991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fe6b898d8426e8286e369e8c248c69587c0c31bb771140793e7fec56d196d7. 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/AUMEV2292986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f3809e1b8b6204861611b40be1358f333ee1ec2c888f409616d6e529ac90cd. 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/QZTAT2157939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65aebdc3f2602b33b8a1fc3047184420f97ecfac4602e1b98f6700109d79ad3. 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/AUMEV2172018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c087dbcab00dfe5a0ea9f183acf20cbc546dc7f71e52de574169a048a96b89. 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/AUMEV2172019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7356ef757074fd9646b2392fe81ce1b35edcc131c4110844b507808bc066d6ff. 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/AUMEV2172020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3987a6a18a760a7525367ba53b5332a1bc5ab5340d654589abfeb570779229. 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/AUMEV2172021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666dc8f156648c749b31f57d1d78723b8551accc6cb7f547fc7c84ce489c2546. 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/QZMEN2114438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef3e11da1516f5100d73c8f110e75c9b9fee6671f3568c01d72361241f73185. 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/QZMEM2172541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba2a3927afc5980efa062eb4ed153447cc14ec7ba7e0353257936e18c2dd7a. 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/QZMEM2102664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde7938198bc100db61bd54c35002da4354c202f363d3654cd4ea27c9cded838. 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/QZK6H2193352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4f1e8fe06d9d210a01fbe95e3e8704f3cffe21008ae943796ac66c1fdfed6e. 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/AUMEV2150145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b9867d3ed7910be1c59b21e9fef0dbd68f7ccabfb7562e4074eadddc0f8d98. 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/QZHN72191820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6639aa312a338e997a13d75500d8ebb79db718ecb7d3e148abb23ae890c17a5. 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/QZHN72191821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb06cf1d1fc5e959eb0f57351701dd6879fc2df7e57a9f80231f8dd9546dfdc. 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/QZHN72191822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236d48e1e38bd7bb26e791d1304e40704f5b6ddc2ff53d6a65d101852b02bf50. 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/QZHN72191823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f1a2b32cea9f1d2a07925994350413df8eec1889aed1edc9b15a7c8c6a85b6. 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/QZHN52156999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcfea1e9db7b90e78cc893a50c4f382378b9d69cb9fc132fc3c543da082406c. 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/QZHN52157000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a675e3980ce2f8cdbd1d480f3313872b8d8544d19e1725fdee1ab25c1af4f97. 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/QZHN52157001.