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 0x633571bbfc835ba6ccaeb10672113f5bb7d2f6dbac8efa104bd4c94f6f067215. 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/8dfaf31d-befa-4b57-82d9-fd9d46ca6c6c.json and https://artists.proofprofile.net/proofs/artist/8dfaf31d-befa-4b57-82d9-fd9d46ca6c6c.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 0xe45d55e818a069003d656c90e18d4f9e6db86730db489a9ebe715b82ab857f53. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USCGJ1248576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bdd3c472393feeb73aac7dfdf3cea6a7be005f05064bcb43a8794ad0fa39fd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USCGJ1248577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092d921eccf20971e6332f2fcccfaa3b12cfd13af3799ad4845ef9ac5d843d64. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USCGJ1248580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8acadca9ccbee6259116bf72593da216eb9531c47764d03c681512d7fbea3a1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ1248583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b0b9d0d01776eb97d3e0e6f9dcda42378c8b9ec4aa78d6bf45ba2d31a9d142. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:56:20Z), 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/USCGJ1248584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064048eba665ce47786e148e6a83990cecafe4540c7e523f6b590c1419a505e0. 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/USCGJ1461307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324111d39cfb58720b12d438acb3927355b90189b5ca04c33f7df59042f1a424. 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/USCGJ1461308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30074a1743d06d0baa977dc4b9f17b750213dbd8e60d4c8d79b2d05778ec9f3. 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/USCGJ1461309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a8fb5be7cfa28a8347fa24743526dbaeedb78667360a80e53e0c1f6899cbd9. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USCGJ1461311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa887583bccf6aaa89630a71814e8dbd5c93f728c8df45955bc3460ddd5ad6555. 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/USCGJ1461315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65331b4f155c49fb29e4c3702dafe8112dfeb1c6cb69410d10dbf538ec57092d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ1461316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4367b2b744f9e9c757f039cf9d33396671f98a6fc9685395dc7a46854f7c9f. 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/USCGJ1792117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a50ddfe429b626f7907a4e5bbf07d160b3e4968335604ab6a7a5601002957c5. 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/USCGJ1792118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade3680191f12637905b486cef14be5fae0cfe1190092214d54278fab3a429ad. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USCGJ1792121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cea5381563a35b71ed1d62a11edf850edcc8fd04c30aaf9d5ffe77b7fef02a. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USCGJ1792125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc848cdc1a0286f2b92803b0bfcb136d0e4e029d21fab83967ee18fa70a39e1df. 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/USCGJ1792127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931d4d310cfc5ed3055c209afdf26ae1535d9b1491588edae223181cdc387797. 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/USQP70091006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04465a03cc81e7e2d67b7681914697d0c87d13f39f44e2af715eff2b9d693e38. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:42Z), 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/QZES82483556.