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 0xe34dc71bf623d893d72dc4c73f5a5e10d99238b5123752066a85b18c4d4c253e. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eb29c38-5f6d-4eeb-a215-8a9f658536c0.json and https://artists.proofprofile.net/proofs/artist/2eb29c38-5f6d-4eeb-a215-8a9f658536c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
她的少女时代 (《邂逅她的少女时代》动画原声带)
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 0x7f07bb37e72bec3594cc993fa3cece4de407187bf3a4582e519585166c5068ac. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA062340629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3f4df44beafa0e975a3898542ed31f7750248be9d5c3ecce67f34b82b5d295. 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/DGA062340631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d23860bda9f9bbca97a9cd71577edcbeabb4089b94319b627726afd638ca5aa. 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/DGA062340634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18a2fe094e5c8eef0e8f7e8903c1eaaaf7afb22de2310e449258dc038da95e5. 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/DGA062340635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb68008fd970ce0d11e0796981007428def5ff34e121f357c0f8c4358daf6c6. 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/DGA062340642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e48d0e1c332c4afebc5602acd1a081165f62e98db8e1d23d3ef3ea7384d5e6e. 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/DGA062340647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aca89cf1ad6079eebb72bbf8d2eb0cb65116262f1d867f59aeb7c444551f807. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DGA062340630.
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 0xb8f5a5444ca0b004d68a8ef0246af0f8a22867348b8fa42ac2d3a4ae17f18e44. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DGA062340632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06843bb979c7db06cc67601635c393e74970da2d195e69a7e6fdbc0b17567f38. 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/DGA062340633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab97ca0b013c285128cde159f1c0913161efeb2cb28f99cec142b257ff45dfc. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DGA062340636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9bc1aa3bf5d914614acf4080d2643d4f91b72f09b62d81f7b7b014e9959962. 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/DGA062340637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2eaf38776a341c6a4aaaf7e76c5a7d7d28d22315d8e2bad03ca79f3de0140c. 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/DGA062340638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0c2bd7085986ea8b60591e80a9cbe9ca83e39e517a4e28d8cd59f9166b5f3. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DGA062340639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6c6c4d0020738d8e1871c67d10bd49187e86306849dbf8e4f480dc0be4f243. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DGA062340640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3dee355f183fbb6145bcab288e6669760a44aecd25a5b6c3107e8909d26ea0. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DGA062340641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ea7b6b124147868b88ec7be525cb4468b1042faabcccfba6d895047bffc2d5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DGA062340643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53923a8e93f6b4325f02ec8ba438021c61eef91c77d458e3f293082cfb77273. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DGA062340644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201cb75e228999e724267cd1d93ed0dcb85945e4782d70ad585193df1c485039. 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/DGA062340645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7d325dc841ae9d489a3c09818ea6f87f5976ea2cf71b291ae6097e2eac77fd. 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/DGA062340646.