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 0x78406c875deace2d978a3bc6bc364498ab08cda4ac33d394fd6543825a1e371a. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e58e87b7-5aac-4aec-9469-375e74d0371f.json and https://artists.proofprofile.net/proofs/artist/e58e87b7-5aac-4aec-9469-375e74d0371f.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 0xe683af25ebd809a1d50b247f07f59c81479b4c187efdff8f9e66624b15f4e6a9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPW561907635.
The Situation Is Fluid (feat. Romonosov?, Ginryu) - Tender Memories Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc198874e039973c3ac5e741b38f7de16f79d77c3dda094cf51e0fc9850547b28. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:04:27Z), 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/JPW562102535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442d9cc1d641c95a0f4b2d68a536e07b90732467b19d44d174bdae001e6f03e5. 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/JPW561802276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631c01cf800cd873f7cb80048f646dbde30cdb04bd9a837022d978b1943bd87c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW561802212.
Someday In Summer (feat. ｙｔｒ, Romonosov?)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b9ab5f9be7c2c4369eee144f08963b216b871877af7234e6b80772116b296. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPW561802363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bf5539e687cedd019357d4f7e865313061c7989d20cb7de4a642a995715cad. 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/JPW561802349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59a807d83089294933db1e0da0a306612e42c4d2fd22086757c496a9d618ab6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW561802260.
How Typical !! (feat. ｙｔｒ, らっぷびと, Romonosov?, 抹)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33fbd493c87d829ce06743bdf81f1db72188301ae082103ae5ffacd04175b65. 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/JPW562109052.
THE SELECTED WORKS OF TAMAONSEN BEKKAN (Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829ce9ad4b2f69da34f6dd55e4aa9213f8163181abb8f9fde9a06c7d5d267d5d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW562109062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8e0e01461868db27cbc6c4fee9a819fb4a393b2348d3585671411020b057a8. 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/JPW561802196.
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 0xc5993660f05993fbab617ef16d4024fa5e05c38085854120c5283f9f68fe5b36. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPW562102526.
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
Lethal Dose (feat. Romonosov?) - Exclusive
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd245fa307146367913ad4adb1b216a616febd488b03b74e9142f3c275f0cb4e1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPW562102527.
The Situation Is Fluid (feat. Romonosov?, Ginryu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49e31b85084e6f8da15a9aa875892f67abc05de0fb9053df08c857d02f7707e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPW561802279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c05f7e79aeba3c51b9d33072dea180fac720a626f9ec8cea8811dddad26e63. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPW561802217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dee606b36464ec28c3ec5fe70d0ce7b4fd11f481f293eeab7d9934d99ed69aa. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPW561802303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1938aa538f7d39d9a0d76f31b8a10571f753db3612f093401790f227190aae1e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPW561802304.
Q (feat. Romonosov?) - Piano "Mono-chrome" Ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ed7e302acaf23e24ed06fcc09fa01f6ecb7566df15171f06307c2885c2433e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/JPW561802348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e47fb1ae02d7071c1bc25d808b09d3d5232d9a648be2859ee53ce4f0fd693c1. 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/JPW561802341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca66748c92f8e8f8a2a11fefbca7f944cce189914bfb44e326c6e1990df8c60. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/JPW562109051.