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 0x2b2f9f0074cee84cb547e244cbff45015d3cfd7c47d0830bc2b6900fca037881. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f7380df-7ebd-45a6-9d8a-34582cb43583.json and https://artists.proofprofile.net/proofs/artist/6f7380df-7ebd-45a6-9d8a-34582cb43583.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ROCK DA HOUSE (feat. 抹 a.k.a. ナンブヒトシ & 小林まな)
ROCK DA HOUSE (feat. Matsu a.k.a. Hitoshi Nanbu & Mana Kobayashi)
Bring it on (feat. TEEDA, KIT & SINOBROWN)
WILDSTYLE (feat. SPIN MASTER A-1 & DJ RION)
COMMUNICATE MEANING (feat. HIDADDY & mindboi)
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 0x4972b64d18cdd3af019bdf1fa1cb5f161f637d0f50117e5804fc7099786dd213. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPX972103015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1529ff6f53f7c4300aaf0892942f7233d004a91f6878fd1ac1ce39f88ffd0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPX972103012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e957f462c023f49b2bb23a4a254b3e93b8352e11d06eaaf2ecd467b0b557e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPX972303000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e957f462c023f49b2bb23a4a254b3e93b8352e11d06eaaf2ecd467b0b557e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPX972303000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59f0f15775902c59eb57dd716d24802a4d5a97251b73853d2425966ad6a1651. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/JPX972303001.
Mind Blowing-after Mind Blowing-after story -story-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e957f462c023f49b2bb23a4a254b3e93b8352e11d06eaaf2ecd467b0b557e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPX972303000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59f0f15775902c59eb57dd716d24802a4d5a97251b73853d2425966ad6a1651. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPX972303001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de24876a3dff78d9a8ea8264a2b2fdd6711342589ab327647d012b66ce07ae0. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPX972303005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e957f462c023f49b2bb23a4a254b3e93b8352e11d06eaaf2ecd467b0b557e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPX972303000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59f0f15775902c59eb57dd716d24802a4d5a97251b73853d2425966ad6a1651. 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/JPX972303001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d825e3a93e1535102ef40ada7861c7d2494a15fa1e6d0fe64478d8b00b3f097. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPX972403000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c27c5b7aa1576ab41bff80fecf35d1e44e856cda28edd8dd63ffa8d209664e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPX972403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2819c17e070cef1d72ea7cc9569b7bc6a4b7808d046dbd9d3c268d4d9b97f069. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/JPX972403007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd066a5740844e19fca000c7b079242a63a4d45c221d3a3a57dec3307d5efe. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/JPX972403008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c663f4ba496cfad3f66a8d17208fad82fb470d230faa3f65490ea88b4de66b4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPX972403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d0fd9854b4490e1efe190019a19111e40c5ec15467ab3e906720b19f283596. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPX972403012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91665ac2391603d004332add0fb61b633d4288eff6111c41ede43275b1bd53. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPX972403014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539fabde8d8d80732f30d85e89929915763f90f87bfb5baab21260f1976d57bc. 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/JPX972403015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77e33183f9cef92df459cff6ea71d7c5fb60899a22e1ce64db70d59880fa28f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPX972403016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48464d610eac01765de61317181ff6e3859d9b3421dbbb8d48aa10412d78a2a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPA972503000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e6293405bf2da88db7b4ee4222a7d51fdb6d05f9469cd7a777f62602a30df3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPX972503001.