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 0x2c5fd4e662850c33fa4c0de2b54cf42f7911c7c72b93f22c5c0c774b30fc6ae9. 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/4f4bf5a5-a531-4c70-9092-238b14f9d425.json and https://artists.proofprofile.net/proofs/artist/4f4bf5a5-a531-4c70-9092-238b14f9d425.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ『転生したらスライムだった件』転生したら音楽だった件
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 0xe176c735701e4523723bf666cfde7f8d352eb96cb0b1f63ba4964805b8a24f07. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPI101900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd43f5d23d8b47b651d4c8cead9bb37c29c2bfdc837548722bb8e4b3d560c7a7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPI101900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b284bcdb45481b3212d8fccdbcc33689ed3b5b34ab3a12b0213b36ceafea378. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI101900299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe176c735701e4523723bf666cfde7f8d352eb96cb0b1f63ba4964805b8a24f07. 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/JPI101900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd20425ab26e5f9aeb5958da6e3a9d33efd64f632857e9be639e6df10b0077f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPI101900285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc59458b7783fbadc80690301063c97f9ba1648e7176b018a542852e1738d2d9. 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/JPI101900259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38035ec078ce929847ea2c39faad15c15f47ad9eb92485d671f0a138c291c8dd. 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/JPI101900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd43f5d23d8b47b651d4c8cead9bb37c29c2bfdc837548722bb8e4b3d560c7a7. 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/JPI101900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b226c6122866cf8c0b334d8e03e135a8970d03934067518cb3acffbd5ab148. 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/JPI101900262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7002afac9addd861373948c5ab304465232d4360bda7afc1229769509adfb52. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPI101900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1e2652b0956350c0f517940d5627b1d257425291f5fd697dfdc306ca35db16. 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/JPI101900268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b284bcdb45481b3212d8fccdbcc33689ed3b5b34ab3a12b0213b36ceafea378. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPI101900299.
TVアニメ『転生したらスライムだった件 第2期』転生したら音楽だった件２
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72e8eff487c7552daff5b77b7bf04eaa5a616ddf1a8b71562ea178c2183de48. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPI102102472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b93840ae47bc45753ec14b3c3098f432772748d24d8aea70e0d9f4317354a3. 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/JPI102102465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7777aeabcf6bdd4574368480906ec12c5ca2652479067540878b9a6da99ebe. 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/JPI102102467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72e8eff487c7552daff5b77b7bf04eaa5a616ddf1a8b71562ea178c2183de48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI102102472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0bba701766895776242e7a2172c1a4bccade862de470e21d5a0db9bd0e0cc0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI102102473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc715c3bc9271adaac1e775922cd2d94c4905e8112172b92fbeebdcc771e6b37a. 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/JPI102102475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a5935029091054c03af9327d1341852f05526eb1cb141c10cf2d6ecd8d8fe0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPI102102477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94732b189a284919037ac9c52dea0786c507f7fd6edc73bcc5b2ffd9ce8c62b. 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/JPI102102479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61de0907787034a8197eda01d81982e1b2038cca21c8e2d1dff1cf4c66369b4. 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/JPI102102480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583fa198d8664cc268b404d291dc66b6f63abee80c1ddf160697a8b329af3e4e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI102102481.
『劇場版 転生したらスライムだった件 紅蓮の絆編』オリジナルサウンドトラック「転生したら映画の音楽だった件」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9143ddf8759899c3b289616c430f90ab1129232a1bfabd45b51e3b974b0e2881. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPI102202399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9481a02a9110bce29a106f0c2430d88f279318cb2fabcded2fe445582e050a7b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPI102202400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d38db9a6dd1984563bd638d98c82977eaa717d6c8ea9c61e03284fce43cb1. 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/JPI102202407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7777aeabcf6bdd4574368480906ec12c5ca2652479067540878b9a6da99ebe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI102102467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb220946e7e98fd8343ecc169d46a40da14d1352d2b9391edb28e5a961e988d. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/JPI102202411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7260376d58715be31f9d3b39b7ce44a0bb2159188a0fa0cd9e47236c67c5c544. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPI101900296.
TVアニメ『治癒魔法の間違った使い方』オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a77d8c3d6c25e95513e0a4e4b6732a75440f180bb3a3b3c286e087a8d7a48dd. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPI102400798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938a28a210c92030da1b93e0b9c25eb1adee80a9797b6505413ee60541ec49a4. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/JPI102400822.
TVアニメ『転生したらスライムだった件 第3期』オリジナルサウンドトラック「転生したら音楽だった件３」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7675b99201b4e32cf4dc971096bd6bddbe66df948b7d4a3a99bcd49837ccaf0e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPI102401338.