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 0xd7c14d06d2c6fbea8e6137dc8375c04f890b5fc6602e57e1546f130cbdb8a534. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/558f8e71-7c3f-4bcc-af3e-5d0ebfd73814.json and https://artists.proofprofile.net/proofs/artist/558f8e71-7c3f-4bcc-af3e-5d0ebfd73814.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KARAOKE BIG HIT15 ONNAENKA URAMACHIHEN 18
KARAOKE BIG HIT15 ONNAENKA SAKARIBAHEN 17
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 0x049ea38ae87bc9eac42d8fb292864dc6089afcb328466f8d0051a2746456a286. 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/TCJPL2022281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb83dc39ab01a5d37be8bea46d208e7cf047e8158633ea5b77c9ba7392bfa166. 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/TCJPL2022286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43f0b3435ac7ad7145951255f3eabe70a00d2c38ce26f4ccbf64be56636f35f. 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/TCJPL2022299.
KARAOKE BIG HIT15 ONNAGOKORONO ENKAHEN 8
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KARAOKE BIG HIT15 ONNA ENKA AISHU HEN 27
KARAOKE BIG HIT15 ONNA ENKA URAMACHI HEN 26
KARAOKE BIG HIT15 ONNAENKA DOKYOU HEN 37
KARAOKE BIG HIT15 BEST POPS JOSEI HEN 40
KARAOKE BIG HIT15 IDOL POPS JOSEI HEN 42
KARAOKE BIG HIT15 BEST POPS DANSEI HEN 41
"KARAOKE BIG HIT15 ONNAENKABUSHI HEN 58 "
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KARAOKE BIG HIT15 NATSUKASHINO GROUP SOUNDS 85
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KARAOKE BIG HIT15 IDOL POPS DANSEI HEN 47
KARAOKE BIG HIT12 ENKASAKARIBA HIT HEN 91
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4000c4383a6a80cb32785fd4600ad9c4d71d212ebe77a535eea1f7878b56858a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:23Z), 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/TCJPM2094353.
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