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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca0bf74e55976d261f3dc722f6e997a07bc34f461d15d29187f5e4c90c62436. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1db5356b-8541-45c8-a541-5907bd6eb779.json and https://artists.proofprofile.net/proofs/artist/1db5356b-8541-45c8-a541-5907bd6eb779.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d49bc194b99e90ec1c9f397541393c6e18470bcab463f0f23a6e9755071ef8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPY2357783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d18731c9182614f8562510bd7a247bedde62f81439497f564d4713778fb17dc. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QT66J2545724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0245a55d152da0787e7c90e7735141340ce3a2b2c7f6830124fbeba996cda646. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CALVP1923414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c08f3183c91ba996f1afe5546a7bb0a588f0e05e3e029e3926cad50c3ed14d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/CALVP1923412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2386035e566b600cc7ef5fdd055dac6ad2df0a03d033c0653d2e3b04701535. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CALVP1923413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecda6854a6356519dab0e9b72efb0775e530dc4869ad5980a27672e8e0be894. 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/CALVP1923420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb6f4ce9d9545983889e1570553af91aa6788ea808c63ad6de1b48311502a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CALVP1923419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac4b7c9a0610b9d2503fc7d726ee131d052d0a1f1db0d8bb444b7b414c261f1. 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/CALVP1923417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d10e251c97554a1fb77dcfddb4b804048c5cf8b783f87e6469e021a2b242c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CALVP1923416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb146089ccc290c87937e308a5cea1d94463477c34771da7306480d0f1ec92455. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QT66J2545950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89047506e85fa2b6785f4b5c6ac0f815da90eb38c363a63b2f4c9dadc511e115. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QT66J2545940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb146089ccc290c87937e308a5cea1d94463477c34771da7306480d0f1ec92455. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QT66J2545950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ace1f0318701c047effa968eb361fa5cd3008aa06e04fca6cfab9292e33d25d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT66J2545964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbace7f3d3e253200e1ecc90910d4980c0fff2658942086fb207391e38c71796d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QT66J2546012.
WAR BEGINNING (feat. Young Dio from ReVERSE BOYZ & Koh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e378ecb0dffef3805460ccd8b8d30c423ceacc0564a6b1a9f807f9de36b965. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT66J2546078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4856b78568fb9634087866a29cfe0138241206ad72de37b72b3df59bccf9720f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT66J2546088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70454fccdabbdaccfe8d78222820d45fd3f7f78e0d92867890987dd3534bad3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT66J2546095.
moment of blossom (feat. KAITO from Paledusk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2988f50aadb865575ef15e62e438004c2200d7633a176622ea410f29335bd922. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT66J2546113.