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 0x1b437d7a9f751183d9c8171c3e41291432b6d883ff31c4e51448bcad592a2051. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31730155-0224-4bac-9682-8da7fb7caf7b.json and https://artists.proofprofile.net/proofs/artist/31730155-0224-4bac-9682-8da7fb7caf7b.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 0xb23d61116a68668426891c999bc87fb3b8b18131f5106e814f7ff75dbfbae28e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/KRMIM2117925.
Combination (feat. JUSTHIS, MISO, DON MALIK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c23d5470465837506074a2a5d00925073ce50c018ad982ab9005a148a54f6fd. 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/KRB472300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16fbc60742395cba6fa912dad819a4f2b416938b464275ee43d192a06b6da0c. 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/KRB472300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed23b9a1faef03d4a3f08a951168929743e32785fad5f36a9922f3385e1308a7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KRB472300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe982b6bcb51080b8f368d0afcc512be4c332f4f0a9bf8cd2bdf5fe54bf768e56. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRB472201520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294fc081c720b1d8e34845751c227c866bfd908fbc703382f2959956e4856677. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/KRB472200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c23d5470465837506074a2a5d00925073ce50c018ad982ab9005a148a54f6fd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRB472300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16fbc60742395cba6fa912dad819a4f2b416938b464275ee43d192a06b6da0c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRB472300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed23b9a1faef03d4a3f08a951168929743e32785fad5f36a9922f3385e1308a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRB472300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0991509b70f1251bf3de512bf8a1b030103ba3f2b58478137bcdb01e55be256. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2122629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4894da5b77ba0cf08e88e05a703f232411041233150939e77eae9944d7cf5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRB472201521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe982b6bcb51080b8f368d0afcc512be4c332f4f0a9bf8cd2bdf5fe54bf768e56. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRB472201520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9c5b5858d7cfcf8b1f34db7bd94e6ae87b7571c782139c97011a1bd3fe1328. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRB472300712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1118540b0de3c4a2854a728f8879fe5ef5c1e086f5d2e648bad6f27bf2d9bc8f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRB472301122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396aa8a688a0050b2846019f3ba27907413e051350e25499f98f63d5762df1ba. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRB472302316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3807821c6f0b2e2d7c5a0656300b1796b3cff6294be59d377db24113fc090b8. 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/KRF632403261.