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 0xa569d455f5d7f9e29261b3967a51c607d689a49636506758cb6e6cec29c017c5. 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/c8e2ce92-20f8-4425-93db-41d3f7c56755.json and https://artists.proofprofile.net/proofs/artist/c8e2ce92-20f8-4425-93db-41d3f7c56755.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 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 0x7b15ba0ee6e4f38f7af5b4212751fdc710a5165d20481b0b272223c32974225c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCJPV2327808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7cef2fe7a4f955d14f23ae6692839971a710762f10a399ffda111272860fd8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCJPV2327805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b15ba0ee6e4f38f7af5b4212751fdc710a5165d20481b0b272223c32974225c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/TCJPV2327808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd04044278f61f1e4124eddda63cb57cd286c202c7cf74f82e288a0096645df. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPA2427563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ea4155dcaba6cd1d8605ca7a7a8c543b30a24b3d96d653c5a4c8d4d2b45636. 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/TCJPS2243213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40409b37a482ba064b8d87e68faa96340353a12f6212ebfc0d6887bcd419dbb. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/TCJPS2243215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d60dfb4e6f3ff7459300f956d101dbf8c80a0b90c18dc05b6915e36811cca16. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPT2217267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf956f580a5fc67c9b5586d786364189b113e5ec12a625702b3c270c52d2d83d5. 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/TCJPZ2401508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e80f5ba9c96f4c47d2484e1b178e96b377f42943c9b9abc877c1c17389acd3. 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/TCJPS2243280.
Sqlupp - Camellia's "Sqleipd*Hiytex" Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe384dc63e614e691f2409d0d31c4716141ce24eb7eb874351a60b2b2884c0. 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/TCJPS2243289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b75496aa4f7899fa37f0f1cd23c92444c1a3be1cce500de5ce805f75699fb66. 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/TCJPS2243294.
Sqlupp - Camellia's "Sqleipd*Hiytex" Remix - Long Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce3f44dcf465c56f3aec4bfa8cfad8185237d85c241abf44f48b22407406b05. 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/TCJPS2243297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904d61183ec20d2c42d95120986b729d9efbfdeb7e9ab99533dc4ba08eb2ab40. 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/TCJPS2244206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cfcf1f0604067020a54b2445440ebe592aed7d343c3d4de427d138c7b361bd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCJPS2242770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35cb72ed5cbebaea27727ca2478362b5c3312083230ea57dacdb7f8ba61010a. 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/TCJPS2242846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996373c5448c6f2a62c28685691122b2f4275672f8a1232120d8b96ffe678e4c. 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/TCJPY2498355.
Reconnect the Metaverse CHUNITHM Original Sound Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763227b8d5530f80d6bfbd07b762f9a1e18bc462b59c26dd08279193e6982aec. 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/JPX301922480.
CHUNITHM ALL JUSTICE COLLECTION episode III 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842b9490cf2c83b96ee997c07f61a144ed8b2f6f0fb5ab92a668bcb13882cc88. 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/JPX302243120.