1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf5ce484b713af4cded27c4a974d521e3e63d6b78a2dce1f45b189a977e786f74. 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/d0bf0b0c-c089-4dd0-99db-8a3758ce128b.json and https://artists.proofprofile.net/proofs/artist/d0bf0b0c-c089-4dd0-99db-8a3758ce128b.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 → block OTSBitcoinBlock must exist at that height 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 0x46fd8a91fd96c2bf99e01bf58c9a44733b4db4aaf108fbb363d7766943a94b41. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM91785706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e54e31b13c1dbf692ef6903c5a8b9e1b26d2dd4e29989ad6fada889dd606b82. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6J2052746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88363d33a4b61ae07c0b05e7ca9a2cf59d8b60ebe99cf15a1b230600d7c07491. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZHN42217176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a87985d57e6fb0ef507ee1a2aaff6266d0bc235e203549d368cfae29735f49. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN42217177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4691cf8b1b6550ff1e0b95f1ac9b16af8e9bd52fd61991c6ac9dd3265018e64f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN42217179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0151612ade9126f518d7838dd1625a526cdb48c48f06d0037b28190bf6e0acd5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN42217181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41898ddcb704ef1e799fea8cddb3805b3da83aa7fd0f2b691b610e32962ae63. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZHN42217182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82034dbfa9ca9b50392233d2bb78827d798cad84cc2265acf31bfebf1d63c203. 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/QZHN42217183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64bc374c4eb9efa4f666a0ad0042af487c0a662fd31d14acbb2561bea34e66d. 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/QZHN42217184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b7df9572bce3c706cdadd7a3455b52188d5590ef4ed42dce2a0385910fbd13. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN42217185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c6e8bd67bea28d5d019cdede7ad4f65c4ef96b32c1ebc4edfb84bc7143e1e. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZHN42217186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2731c1c092e0ccdcf2d584547c2e0dd32a9960f2653c048ad523cd7782b87e93. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN42217187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820efd23ebf3176f61fde3b5fa3a27807bf1a13fd8a75ad950ccdf9cc051d02b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN42217188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc1e26d67d28d2d453f8f95fad232df411e62b4cb4f3c26aa9a40802ccadd39. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN42217189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77203c9990abb38592ca695c19f46fc7f3fc62ad2e6332cdc3f2d629ced3d0d8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:56Z), 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/QZHN42217190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0fdedb0801b2729ddcb257cf6a2a2ade87856338509aa39495ca979317c061. 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/QZHN42217192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2141df08dba81e3007ae235948ec6f588ae68319c060be5d10acc8d8c490f95. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN42217193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b0a0b7696c05ebee905f0381c513b1a3c023037bad614196b38459212ca453. 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/QZHN42217195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51be5de497a0b59d311611ab26a7c76bc60bc12fd563c9cdfd3aaa2b8f450fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN42217197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1cc62ea2983ee309c463eea237ba07f93203bf60a9f10f875a89ec2ce0a268. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZHN42217198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c12caf47d9c40130d89a8891577120226c60524a384face2c1ba748f141f17d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN42217201.