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 0x34039c90967fa999f4d54f98a79fb2d4506cf8f64717940bf65639d4d1f2397c. 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/94ee8e4f-7d48-422b-9892-25e3f43ced83.json and https://artists.proofprofile.net/proofs/artist/94ee8e4f-7d48-422b-9892-25e3f43ced83.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 0xed689f7ed87aded9893c04dfa256db145caf539ee847d79c6fba7c782f69dd79. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USP3J0802452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c94a5b7b8522e43cc0783790c63014f45f083ba2eecd443fafcf6c02c3ccb90. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USP3J0801181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e6a4888c653503c7d8916d82a3ef5597d0f8e9eed8cec389901d846098e8f8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USP3J0801182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdef198af7b6322425e0097d5ac361c460dcaff72296607df659d9e96d61b241. 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/USP3J0801183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4d57eebd84cf9442ada1c5ddeb723d185ea2813fa277f36ef1a55b418756e2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USP3J0801184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc357e0c56fd83453772917254e278560645ba55fb84ab511661dc0600a8d696. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USP3J0801185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50328e920f725d3340c2b5c148213c7016c807e17d045acacadbe267bb3395dc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USP3J0801186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8123aaa94fb5314cb0ea9477901dc07ebde574bb334a0a90ce27a12641d9d57d. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:32Z), 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/USP3J0801187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c2b7b99d6347240d704e79e9a11aa8e5dd72469476db50721728ee18cc514. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:16Z), 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/USP3J0801188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaa355ace4d4162bdc9eabdbcd2bbee268e83436bfc79b1bb5d7f1e877bb3f7. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/USP3J0801189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fec0729b2d1fa5c6fbc0996a1655406789e71a35920448b9bdbc3f7be870c6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USP3J0801190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f77868f08d5cab851f5b22661ca4db1b98d8af3428b549dcb28d85694a2683. 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/USP3J0801082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c94a5b7b8522e43cc0783790c63014f45f083ba2eecd443fafcf6c02c3ccb90. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:42:44Z), 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/USP3J0801181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd4a9896a128d8fe574c080618e435f7d73dbb928f04b52e0cf6438fa65ee1d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:46:05Z), 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/USP3J0802405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5cd16f39cf2d85dd9305bcffb5f814d37635b05c4db57bf436ca48ce05b7dd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USP3J0802437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ea7ee88046f8b8ca699b1eed4688834e7d78d60214e378dffa02660fc3ecee. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:51:33Z), 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/USP3J0802373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8397a803793318947db8689dc39965aa3558174d828be2109e6eb34c86e4d6. 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/USP3J0802381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5276487cb277e3802fd82294c8b3b2362287addd479c2cfa6f83223a1d23cfa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USP3J0802755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed689f7ed87aded9893c04dfa256db145caf539ee847d79c6fba7c782f69dd79. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USP3J0802452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6560bc13d7ba8dff51194746a560889940cf6fe26ef6e059bcf29862d5d2947d. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:55:56Z), 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/USP3J0801083.