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 0xb945aab954581352aa13ec18e0f23c3b7445789290e72a795402b7070f516f56. 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/8a0b4e1d-0bd4-47d5-8835-764aa0208207.json and https://artists.proofprofile.net/proofs/artist/8a0b4e1d-0bd4-47d5-8835-764aa0208207.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 0xdb5a34038195b4497597445b0adefec0b53ef5d44108ff75692e7704113e8282. 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/QZK6J2080628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37225b1f5543b1836242e292b4758e84f5b90af7d9acb7dfbaa68bcfce7b57e7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6J2080629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5c5bd0f7fc6b75b6bb395d75f85d99295e114c841f7e5e37943c8cfb590870. 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/QZK6J2080630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5233f7d211dd2d448e46012a44fd8a0e2c2e59a36ed1a62ba8827cab19b67ca8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6J2080631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa04e4f7dad44812a1c75c9536f89a7311cb31cf69decd3cd6604abd43a9272. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZK6J2080632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834576fee27f8899bd832894fdcf0d4079d1f3b8e8dc360119db1190d00b5b97. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:43:17Z), 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/QZK6J2080634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c058db8e45b4c0c5333528a17608f57e6ed0200ea4c31042e78291c294ee4e7. 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/QZK6J2080635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8882b5fcad851b071fabb511ffd4068d1e489951c28cd735c2c2bd0c4ad822. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZK6J2080637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c23ab4666a9083a2d4077ac2f5dbc92856a6b56d8798597d5199e1293524fbb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN72131487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3da75c393c51e48fe89a956a252563a3a04ea94215411bde3af9e4a94635692. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN72131488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6268d06d2fbdfe3fb8c41aecf79b29b93d98d697c0495bc270d51d6c2e4c6a7b. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:01:22Z), 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/QZHN72131489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254f1e0d0dca2700ea1b86178ccefa88621842bd1cfa09c29d1f7e5a86d39214. 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/QZHN72131490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69b76c51db622e73f555c876bc6c4ba93c3755f5145a9512a531596720d0613. 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/QZHN72131491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21faed3f3faf5e1f0f1cb8b7bab63327e67aa42d1fb97e2033d2964aa3c6ef74. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:06:15Z), 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/QZHN72131492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfffb9b50c444aa5eacd734da40aeb65cde9d2183def62c1093e2b578909bfbe. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:59:50Z), 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/QZHN72131493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc75fac24b47d2f6c7ae9b81309cce48ceeec3c7fd686145b0cbb01b844f494. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHN72131495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8436edeb297130ae13d2617c0fc39b3feed762cdd93e14997e8125b4cb86e. 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/QZHN72131496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd1e76b7818055ee5722fa0db0fb300bdf26ffdcbd23e26a49c557a23da530c. 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/QZHN72131497.