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 0x819475034fce12d212c27c1b09834f05b7b144a3bb69dbb3ffb7fe1e11bca4b9. 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/17fc81f6-aedb-4c9f-8cee-2217a8ceeb18.json and https://artists.proofprofile.net/proofs/artist/17fc81f6-aedb-4c9f-8cee-2217a8ceeb18.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 0xcab93b6b58fafed90bc4c1d9c39ad915d23cf611673f1959b7fc4ed23a3dbd15. 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/KRMIM2476487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222ce5ab525ba31b87cf8c29a11c8b2a0985a4ea2436ee1bf6ccd58b116107ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRMIM2476488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8395f284a73e9c85ef76a8c189b72bffe33d5ad2ef975a17cd3434876c7cf2a. 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/KRMIM2451388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2e806c2876dda0d097a46790e2a923eaa1c80b15d7d02f1eee3dd640f5f415. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2428829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7edf9f31070f111598a164b5b47d7820780361e03482efd4faaacef6cbaaf3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRNAR2335431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf998ef8541632d4a2f36850ad1a6d954ad3a85b14984ae3cb0a95507fd830edf. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/KRNAR2335430.
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 0xcdcec11bb319a3509b295046affad173362113746a730c0f378bef27e73c9026. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/KRNAR2335432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b58b9b4175c185a852e952eab3ff3c7fbf4ae4701e426417586a3bbe6d1bfd5. 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/KRMIM2359820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939fff58787bbc1ef6f22073d78a7b6cefa3ea40c9ebecf00b1b6162cc1a58ce. 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/KRMIM2359821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf032d2a6a59065df51210e0477cf574b6e054e47811e00c46ad077a62395f2cc. 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/KRMIM2359822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4678c365c01499be393b573afde16bb1b0ea2478da3c0622cfc3d63e8fc429. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/KRMIM2345500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf24568086aa0795f9cfcdc1a9e072d1f365ef7d5e134c805fa0af83307b066. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/KRMIM2359823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39abfe592fae2c0c8430c50d2e167231cc72064b64d14aafda0e4c93b478e0f1. 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/KRE022200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1b3026653e0325fcaf86ab9fb6f1976581c48eaa81f00de61761586df08db9. 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/KRMIM2202403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345825d6fcc7fda75ee61c4ceb70cbbbd3c3c8ef3b117969825499a6d95ee4e. 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/KRMIM2143527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7854415af498ce7b8ad69e0d62471da8cf57e9805c3007a03002c4d025e35f60. 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/KRMIM2126474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963ecaf7fa0cd819cbd9b0dd229e2780e828ff41f7b2b14d28fc1a56331cd6ea. 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/KRMIM2113265.
Questions from our night (feat. Soombee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80963aa838239449e0ff16916d2e184cb6281ae3008c000e0faf2865684d91aa. 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/KRNAR2206551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0b924895bc5a17eac3a290349fb5a4e64dac7aaa83216dea4e96ca904921b7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2032911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfb1e3dc3ddc5c9b1c22e80c033649104f1f9cbf5bbc2eb3ea84755e5ce414e. 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/KRMIM2032916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bd05db96df5cec7ef0012e66aa74ed15ef4ef53e5968c1b0698ed95d5ed350. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/KRMIM2032910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9c7255560ee88370259f6583fb61f2851db318d9479405f0db67ac5d4c7e19. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRMIM2413823.