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 0x411135a580c84cf30418f036a92c39fbe2baaebf14e23c5ddf15ecb25755831e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9f73318-2267-4c58-8694-4d81940707dd.json and https://artists.proofprofile.net/proofs/artist/c9f73318-2267-4c58-8694-4d81940707dd.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 0xabe4fecad73e9988ba5f9428f4662fd691b5bf6f303058ddca9a59eca57ddc1a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USHM22138548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464e549f786b4658cf3d47321ed36dda295195766760012093546756eff2d5f8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM22138552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec4ebde75d23b7c9405807b93304096006a59cc2bcbc342ee5f14b4f5afac1a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USHM22138553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c097e611e8a8fc1b342e9777471f65d46c05549b096f8f4e3d5d027cdde44d7. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USHM22138554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9574ef0578c79211d39aab88212c6d5bef96fcd007410adcf7319f78047aa2. 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/USHM22138556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9bcb151d6a35961064d76dc74aa2d19b2297835ba0d5b18315a7038b3c38cd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM22138557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d581954c941da2c00142f7f0d20d055ce251a848d8aa732ff3fb2b3fb7046f9. 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/USHM82182006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b5529b4bdc1856ab5e45f3f1bdac300a55e6042b175b6cc25d5adb80e48b2d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM82182007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b947ad70db280ef461729360f505611a83ce314cf035e86430989a38701c24b. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USHM82182008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e5dc9bbffe67e87f0effcbb5c9b9bce9b68c19c359da5cd139c90d4e948b9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:24:04Z), 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/USHM82182009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbc45ce5d269f551ddf60afc5662e2b5411da123789f6e04429112c954a7d59. 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/USHM82182014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c31ddf8d4fc544ad79aa6663825e4300df7776edf810b9b1c7d1350e0ed8cf0. 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/USL4R2228210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bef40d4c19ae173e743405ee025b3b0fae75a205976d5a5e15ea8890f772fb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:18:35Z), 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/USL4Q2312761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed0dfbde180b7c787c74f5e89437bfe17706d7f8bfe3fc568c85cb266669ac. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USL4Q2312762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e40720a672c80097f43f571cde37dc1aebe628f6109755b1a5b36c25e159f6e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:33Z), 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/USL4Q2312763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b400c853da26c9188afc5b3d50cc3bf3c0061dce7c822d8b616cbd940ba70d7. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USL4Q2312765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3af000482efb374c3738d62513b0d66e621b6b20afefbb5b7f09d0db03410c. 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/USL4Q2312767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ed961aec27ab6a1574698a3531da278d8f63dee2616f5baa3328cf61e95502. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:25:25Z), 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/USL4Q2312772.