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 0x371c1288c89951992bcd8a9d7a2c0d9c017cd78a05335499c31445619c3df588. 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/783de6ed-bed4-42cf-929e-538a71e71f57.json and https://artists.proofprofile.net/proofs/artist/783de6ed-bed4-42cf-929e-538a71e71f57.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 0x74352d00ecca52b52e84d41c6ddb2672debde3582870dd1642e5bc5795516397. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JP92N2339668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8525d2104f97e543820b268b36162cc1d954968de5b85661362360d27fd3a6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:32:26Z), 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/JP92N2359545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8015ad76612b7cdafac6219ac39f7ba4cbc819faef1f89855a557200e5f97354. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/JP92N2422812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbc6c6c0e39e9094b0fe345c64d62dcf1c72a0dbd6bda801b7c8714cdfd2d35. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JP92N2506306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac4da4cd84f4cd81f1f70d69e8af09b2f18c7d587809cdbc47f308e8b05a3a8. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/JP92N2506538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee78a16fe1b656ccb4620f23fe8b16dc9db04c5d97d8a5ecb2e882d3c974407. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JP92N2506539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbc6c6c0e39e9094b0fe345c64d62dcf1c72a0dbd6bda801b7c8714cdfd2d35. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/JP92N2506306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0087f688251e8bfb43ec53783ce84aec67db57d169085f2328cd34fb4383df. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JP92N2506540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a28f322c72f6a0641ae6e7ed1ac910ce5b35c3f01cbfc18b7e23e75e37a48b1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JP92N2506541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3173eeca46f47ed3b08dfd8e7c55d66f20b33686e3dd9e82ce7caa32432ce296. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/JP92N2506542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380608f69d31afef5e940bf18fe69aaf717b238856cda8bf0b78c5ab8751c034. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:04Z), 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/JP92N2506543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc846c7d9fce71540437287222d86f33c16f6d6f516d558ca163dc56a993f8f0f. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/JP92N2506544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977da36b8326fe86f274a8f84428044289fa1791545608a56e411ba091a5872. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JP92N2506545.