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 0x2ce9cc46bb120685ada0137ce06480d9903f9fbbe20b5ea6ae46908eb9fdf1ee. 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/5ba45ec8-d2e1-4025-9148-a216549fe40c.json and https://artists.proofprofile.net/proofs/artist/5ba45ec8-d2e1-4025-9148-a216549fe40c.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 0xa39fd15745991f3c350dd70fd2ddbea73f04572da559321e17f430a5d00ec608. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/TCABT1483194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793bc64abe75d027894853ec1a434a6901c994cb5306676ca7df5e331416c533. 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/TCABT1484780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a282ffeedc0bcce4c86baa1fcc0aecde152ce7afcf35f1a24f341cc77093b7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:09Z), 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/TCABT1484781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e351fdc434df69205abeefb539a892eb8472da7ca2f8ac93e21f223cf0f6e05. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:53Z), 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/TCABT1484783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a32e0a6dc087cecb04fca10168c2db74d2fff95e795c48afe2eeadf51380c60. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCACM1668129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c786747a6f2c589bc3200407cf707e419e8fad86237b283665b1369166288ff. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCACM1668132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766e2e871cbe35ae32581dede20120957682d0c0e5d5a52b45004bd16d84558b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCACM1668135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dee26458e5feada7c81f195eea7a77c3e812a73ef1a523774912d81c76473a. 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/TCACM1668137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f24859e66d65f48f9f280648f8c5899cc5b2fa818208aa0c9f705e64b68fcb1. 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/TCACM1668138.
Is This Really Happening?! (2018 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3b92a47dc5a1c22530af274f70837c26798462fe940a5a0dbe014b2e859c9c. 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/USCGH1831404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fefb926525d4a2617eb660ddd2989192c53ef8b5097f4611a1457216fd5592d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAFF2002771.