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 0x9349c7af0d79e61f72418f2839ad6204d55ad6e13dc7dc40b5dd47bdb811ad8a. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9933825-24d5-46b3-b9a1-30c49a13902d.json and https://artists.proofprofile.net/proofs/artist/e9933825-24d5-46b3-b9a1-30c49a13902d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ『RWBY 氷雪帝国』オリジナル・サウンドトラック
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 0x2cb38edfb6c2f24c4af050f6598c3e607a96fedf6173484c55862552fe585b07. 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/JPI102201992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39182792ab795b3dab526ee7cf7b68e58ee41d13e49e211839f81053fca07aba. 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/JPI102201993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db2c617ece84a8959d292bf154f4adc46d4c3737d95de42b1681abd9303f7c5. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/JPI102201994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31441ae1a1467a2c8216f43347e531ea4b51d27fa77fa740a4c1db6f0daa99ce. 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/JPI102201995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ebde82c4d112465e15b7891bff52f1a2f814dd1385c9db65b53cfc2bb8594. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPI102201996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d6dee3809ba9668c7a8e8b36b1190a47a54e68544219e96df57b9d7b7cb1f. 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/JPI102201997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7ddd47fc330d43bac2b13acbe9665ec98593b01724cf927b2aa025f6e43631. 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/JPI102202000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5fdf0a83f509a6328ba7799f286aaaac3e3e12e26e2c8974559f7637d2760c. 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/JPI102202003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1326b25cfe7610f822f1e2be077b4dc118aec0e9312fcd4d73a03633465486a4. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/JPI102202007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1339d2f563f34ad1ebfd118a37f7361d4dcd0ef6778c4155306261212ed42964. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPI102202032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704be3bba5f1f96608ac1a2edab577f4f88280b697d9738562ddf50c4e63316f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPI102202035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63286b3d0fc8211e106eb75cd4a5a38b8dbb338081208a8863f7d6774a25fb1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPI102202038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2186c4099a6ea8c402a2442d86badb9297c5501ab72e4344cc2a461759fa2e46. 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/JPI102202039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6725c4dc37aa5a1997a30ceb24f534312b3d6030dca7fc4b907f2e432ab106fd. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPI102202040.
Atelier Marie : The Alchemist of Salburg Original Soundtrack (Remake)
A Beloved Picture Book - for the Marie Remake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381b5e2de113aee5707df07b109349847e6d95eacf9416c2c2d7df6e3aaf975b. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/JPD102300604.
I'm Working Right Now! - for the Marie Remake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f55bad4b6638e451bc44ced7271da116add35eddf572ea7ad8960ee390fa520. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPD102300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b94b29904358b45d5779a084493503019d58d92b4718dc75c2e57e9908c5beb. 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/JPD102300648.
Rings in the Water - for the Marie Remake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bd08adc1b19603f0ffaeb25f7d8b180c62b51e477d4a61859c5f6928df25fc. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/JPD102300628.
Going to See a Rainbow - for the Marie Remake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e10ba7efd71386eec09f1e5632f20214ef61f53a408b136bdba47414d4c337. 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/JPD102300633.