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 0x0f70229ac3fd539747b5a838c39d67c239d92ee1f1c1536f54ad317addae9712. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbb26c58-f566-4f54-9385-a384ae3d6376.json and https://artists.proofprofile.net/proofs/artist/bbb26c58-f566-4f54-9385-a384ae3d6376.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 0x477c7cde8473b04e0cc0e22310e3be473414f048b16a6dfac1583c8082687eb5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:53Z), 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/JPE871903503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb64bf9dbcbf50a954ba61e15dd58190aea387b992bebb431615f73aec1419c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPE871903659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685bdc6912e9d91b84e35213d4972964bcfebcd8fd7a27a1450bb959f3cccf09. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/JPE871903631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb9a68e21b41cfe332834c843becbf7c551e929a34df9fc450214c46b5a6bd4. 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/JPE871903664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd0761589a60739667ceded2a7fc7600624f746b75bfa598527feda20a7ae12. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPB602002567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf9b7f45ed528eca28f58c3593781b9ecc2f8fd2c8cf5cc717b0bae44f3451f. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:43Z), 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/JPB602100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff847b46d7877ab37400f13ac24a3486a373f3f17aa871be24bfb2624207313. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:21:18Z), 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/JPB602002613.
らぶ地球 feat.ファーストサマーウイカ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02be58a303b017d1797736ae9a1b8079dea46c3a04ec31c75f78683303f32f6. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:18Z), 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/JPB602100795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08632d6b719506b0be466c4c8dc72c09b3e8bdd080259ad169dcd6e9cdfaf65c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/JPB602102883.
昨日は戻らない/恋のフルスイング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad4adc8ce90860962ba37baa8c0f7cb3aa89f42784ad0c233a11ff831e1d8e8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:04:37Z), 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/JPB602203580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58c0e3d46bfe65445ec4e01c4dd1c056e8a2de22936a3a5bfc4deecbc25a1a4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPB602300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c8c92c09ff03e7e49bfee1f7c09486705b1956532de0c38a204cd8b69de97c. 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/JPB602300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d527b2cc2730c3eb7a8e81f8ebbf34ac182f4a40e19e6c0c3dcd6b5851c48d8. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPB602303545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4de0021aa766cd6c3951d88d09572ef55357ea4780d608a5209900d5571d759. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:24:50Z), 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/JPB602500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0012d75b74709583bbf369390b40da73c36734374208f5cbb56b58dfbeb8c74f. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPB602501620.