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 0x1dc500cf0433c6d9b28b98253bd8c4e4822587eaf0908dd2513cd8c8dda0a7f3. 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/1ba65b78-dd25-47a5-8567-4e1aea96797d.json and https://artists.proofprofile.net/proofs/artist/1ba65b78-dd25-47a5-8567-4e1aea96797d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x91cd2e23ba0e708d970de58e2201f1a1c7f4effc9a16b0b8dea903fa0005c7ae. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2079667 — a six-check JSON result.
Quiero verte sonreír (From "Marmalade Boy")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1492f50f1a5338be63dfce8dd670b38ec9d4a040d0518ca264729c3a642f2e53. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2070297 — a six-check JSON result.
Movimiento del Corazón (From "Sailor Moon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54187111364547d449e933248ba200888baa8c0668997a54da3e380c54173b3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2000552 — a six-check JSON result.
Sal de Ahí Magnífico Poder (From "Dragon Ball Z")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f025d765087a6c02a951d67fab7a473ebc7b62adba9289f63df343b2de14dbc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4DW1744633 — a six-check JSON result.
Ultimate Battle (From "Dragon Ball Super")
70 cm Shihou no Madobe (From "Dragon Ball Super")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bed9d7b73f1de2288737b713e2eb42314e2af7a6c4a5e90b1d0f62220378e3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1919723 — a six-check JSON result.
Anime Music Collection, Vol. 2: Brave Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c6c7a8f5279845d3e321eec8cd807f55c00d80cdb638b9e61c3b9c45fc8a26. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2079663 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d8514cd2c62c38e4c7ac938a18e7a1a1b87323d175180da29d4990e58c0c97. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2007558 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54187111364547d449e933248ba200888baa8c0668997a54da3e380c54173b3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2000552 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47537839ee963147fab62a9f1be7a2c61616b732526c97a601f99a0f7e2a93e3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2000554 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c549d34493fe196bf1c82a5544c9cb04bcc5b5d60047c39e89f2bbb5a7bcfa1. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2031026 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb765403755fba326a0140578a6cadcedad8c8c4bdc2cb57fd7d31088a946ef98. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2079661 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb720075fd4bb14548c9561c19539908683f9447421d2d877ea09c71d73c02817. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2036653 — a six-check JSON result.
Digimon 2020 Mikakunin Hikousen (From "Digimon")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1652b603ed77596428b9042de13dc74a59fcb62b0e1df10a16d6236a2de2b16f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2070292 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9093f09094fe862fe20cc70f825ff77a94418e2e6465e555d0365785557bab98. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2000549 — a six-check JSON result.
Romance te Puedo Dar (From "Dragon Ball")
Super Campeones (From "Captain Tsubasa")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1e42360f87b6f60bd04e5b2159c11aa3c1f976eff030113fb57aff96cf552d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2009458 — a six-check JSON result.
Cruel Angel's Thesis (From "Evangelion")
Midnight Pretenders (From "Tomoko Aran")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b6b9107e32b3a551507421fef37c2fdda549afb3a9d2909a11d16321cbcef7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2071642 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd99b1f3eb6acdf004de2cf8c4b844fe8e22b5567a9576b7a764a9d4f3f6e8a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2175265 — a six-check JSON result.
Ai Yo Kienaide (Cover from "City Hunter")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b53381cc63d086a944fc16b64cdb77c272483cd5be32cf2688e76110571757. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2057648 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53126c52fe8c7a22af738093ad6ee6ede10c83f8bd1ad6f26717873353079014. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2000528 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508cb8cd7c732fa61cf387f45570728ff6198a70a19b3f37020591f6e4229444. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2126685 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d459fa5ce2893eb8a3cfb324f3446c76921d3f1d682f8d6068f3ad5adf83645. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2126298 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4739457c4f8e81c8d52ee9680a3de410fdc81d25ce8bf1f99ef19ed21f639b3e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2219024 — a six-check JSON result.
Ai Yo Kienaide - Cover from "City Hunter"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b67399ad547c26bf74d4c10fdc56ce1345ceb93e66366d12853531ab4ed7c. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2209691 — a six-check JSON result.
Remember Summer Days (Cover from "Anri")
Midnight Pretenders (Future Funk Version)
4:00 A.M. Lord Give Me One More Chance (Spanish Version)
4:00 A.M. Lord Give Me One More Chance - Spanish Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63351b27745cfeb4fbc1056ca170dc97ec4bed34f4f1651a72e371c531381dad. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32155029 — a six-check JSON result.
Fantasy - Emotional Prism (Spanish Version)
City Pop & Future Funk (Covers en Español, Vol. 2)