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 0x22958ce311fbfa6a414febddd9a69ceb56675ef2c84e1d2e089c1e72ae9de2f0. 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/71eb33c9-af68-4db7-b451-1f6c094d3c3e.json and https://artists.proofprofile.net/proofs/artist/71eb33c9-af68-4db7-b451-1f6c094d3c3e.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 0x70d46b4f93ebffd5cbd453b3571004849403345c785f8c99588bbec423449982. 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/USY282013124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64ffc08224342d25c045a39ad505dc3702631b90f2b7b82ecda07bb13801624. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USX9P2096997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0206d9b31051967d5ac0d6e52778826e2cbb598390112489e216d5fa00e1a4f. 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/USCGH2174450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deacc4a72deb75e4eeb14aaa789e79e40f81bf8a662892390a0ae896c6aebd2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:26:34Z), 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/US23A1533938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38466e4aa42e28ad007d08d19c7d3c4061b091f0f8a64fe8f673fdcd98785895. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US23A1536050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7716f6540afa79ff7860142d8e5d0a44614faebc606ea22ea6cb084186fac2a5. 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/US23A1536148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00d29f0f9375de2636715056cf9327c32c2952c1879d9fc52d763b1d7f836ad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US23A1536214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0762dc94d82900e93b3c7a44a56c8eb1442642d2473aff4aa869c184ec4ec76. 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/US23A1536382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b4731c45744c977bb9cdcb29baff4fe54b1b6a598dae4456a8305076c6ad77. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US23A1539126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ba5a7aad9fc38814584f4a80e50b82763fee9760169e5e465beb00ea1ea081. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:01:18Z), 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/US23A1539128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa953d00a5b28ea9127b1140bbcb0fafbc0601aa3b4b6f8327e7bd4dc967a7526. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:33Z), 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/US23A1542145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce643c5b6718a0459fb823974b7fd272e52f94ec81bc8c5c12aaf47e1551069e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/US23A1542322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97221008afc15551c29d81701b9b891898978ee3fa2d46108c170746081b05c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US23A1544073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39203de3e163f0eedd18958d0dcb70ddf86b63f4249cddac6f9b8e7a1c31d0e7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US23A1545309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aac43bcd0c5353e74eaa655857ee467b5316f0c64b9fc798c526b59c0958ce. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/US23A1550007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc8671b74142cb8313e99c9cbef6d3b3e2fd40fb2ad58c1102f20c08047827e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US23A1550008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84ea4645f26b3519e08bf0d2039d24f518be78f40a74c96fc1520f8e65b444d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US23A1553630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc09f4165854dd35740f082fc0133d4838d26d4824809b1860a5a36d5dc5d801. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/US23A1559181.