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 0xbfeab8b2f09a00c87eee2ee07012cfbdbc604e9e40bc7d028b78e5087bcd1a4a. 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/9152c450-3013-434c-83cf-cdda5c93e18e.json and https://artists.proofprofile.net/proofs/artist/9152c450-3013-434c-83cf-cdda5c93e18e.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 0x511a29abd5713824c63bb2340647c70a999f4cb6734e90978f2e71b044a0bea6. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/ITE061400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa231156d2dcffaab4db2fa1e7b86b3cb1b2ef1f4363d0709c0f7ac287d77445e. 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/ITE061400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6ae971bc143341dd98865c90dc04feeb8648ecf9212f3848872c8ef6c9b585. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITE061400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0329a832be4874b87f41447a39d80cdd00cf398b1793bdccb39e8b39359ed578. 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/FR2X41400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4067b7c36632376fe90d976c5fa29697418f3cbb82d070f802282ad57316d308. 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/FR2X41400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8d7b27d335a1be85024894b35ee40ad00620ad03e31e306a19dd1a299431fc. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR2X41400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a6e5897d37e443b1a0087f844e3fcc09fe4d801a27b92b7c2912aa534a8eb7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:32:24Z), 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/FR2X41400125.
Cocciu d'amuri (Dal film di Ficarra e Picone "Andiamo a quel paese")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9529497e3f209c9e7373c483af7358b4975803955114599ddc60ab200762c3c7. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ITDD81912132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd36ffd88584d4e5291d27c4ff3956743e82a319c0285fa5b7c01f2bbf8c9e71. 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/ITDD82101571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cdd5c334109b1652a7610f0af95ca781b6d3440545aa0babd1eba3e61140cc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:07Z), 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/ITAYC2500014.