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 0x58d1abe85704cb040b7b3af9455d064e90ec405100223c51c8ae443313e456d4. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64fe1abf-4e73-4ff9-85a5-504df48486c5.json and https://artists.proofprofile.net/proofs/artist/64fe1abf-4e73-4ff9-85a5-504df48486c5.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 0x00dabe0bd6602d7d264bb88f1de9472d43b8f5a5f343c8baab8ea472c5cfd49f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPW561802216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf6029f540974ac0a6f55c751d1abd8d2213b78e0fb4922442b3837d0dfc669. 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/JPW561802235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09984d27bf45586e043ce83d97b09df085a1032ab4ba5ca988e310a02e115a0. 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/JPW561802165.
ちぇんりあくしょん (feat. 抹, AO, らっぷびと, Romonosov?, 雨天決行, 司芭扶, 妖狐, ｙｔｒ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84a8c97e56dc5ca709e7796939ca0eaa9d7362597fc3ed635ce3f8eb691c807. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPW561802308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22b38455f033f9ca0e088ebdeebb4384aee87374a8296abed67b22b205ee65a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPW561802293.
66音頭 (feat. 抹, 司芭扶) - Reverse Double Rock Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc42422d42bc042a8885fb38c765a85e681a41b82de74e0858043348c6092cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561802222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68db530f8a0f2eafc6981d28b48b8b900328d8829e0f1b3d1b54e1a0f9dc0f2f. 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/JPW561802035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0301b41910ce32c3b4ceab50299e97e7e761b030934e2d3dd62c3127ad5e26. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:04:48Z), 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/JPW561802254.
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 0x6aed5161742702bfba0da9f06c0434d4ef490a59fc067fb5af8af1a711a4b23e. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/JPW561802274.
Batti Koi Riddim (feat. 抹, 雨天決行, 司芭扶, Ginryu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a12a25fc097fe7819c63ecb10d7ed555b9c52c63d36b7c413bce034944dbb. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPW561802362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd3ce8246f5f45b263005be425753c53cdf5aa62c0883a9f2b64d825c1c8196. 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/JPW561802242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2a14d0b0621f17666f699ce9730569ea027b26461c3d70bc708bdf489d736f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPW561802259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a8583c33e9030416b15ce07ded8800784a001c694fdde82f0e96696ff089f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPW561900008.
THE SELECTED WORKS OF TAMAONSEN BEKKAN (Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef58ab66f7f3e1aac4963bc564e935fb75b15ef86e6bf80595f0f4c689033ebc. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/JPW562109061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f5ee4809bbfd938b3d8ee656769733da24e2edc853053f548745a9219a84eb. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPW561802194.
ハルモノガタリ (feat. 司芭扶) - Forget the Love Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ab2774cfa98acb058912f0a208872baa780cfce217fc3b354ffd9c46e07d30. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPW561802370.