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 0x6fa536549cfeb28cc346ee9122d1aac80ebacc1c59a1aba2e6c47724ee33c4a6. 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/52ff261b-c302-414e-99e0-fd09b8ba56e5.json and https://artists.proofprofile.net/proofs/artist/52ff261b-c302-414e-99e0-fd09b8ba56e5.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 0xd7117e1ba0da8931c9ba6fdbabd3f42126f4a042958adffd27b6ef25bf1d3e98. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ41956302.
Boyfriend Dungeon (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e082857347c6796c4f35cd82cac78b23b1053db593474056dabb27117e3c974. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZK6J2185784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85275ddd1ca47a6b4fc1fff0584e76487064edb9a8f0db09ec23b125a559fa7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2185785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492f7524c824dce14def5904ca91662e0c7e9fb63eec683154b5551a8afd4382. 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/QZK6J2185786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba348a6e9774869188c5d105a0cd82305ee738ca3207bf8582d3e934638df75. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZK6J2185787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e3aa14fe77f3b01eaef9dd6514b0a9173f1baf2e3f2e1890f9470a6195dc31. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZK6J2185788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7417ce4d5fe2344125caa84a90a3baf7cb1f803d359f522e08a3e8ec822999b2. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZK6J2185789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4681dc98844b3452e07bfba186f7c098aa48126cacfe70cbf8cf83a416d57e8. 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/QZK6J2185790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e44b2637940de0e7ecc04b63594d047301356abf366aaa63257db8d0d56f53. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZK6J2185792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee9f3a146be8540064005b4089bb863f92eeaeaccf334b13616e92b3dc5f67d. 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/QZK6J2185793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9e0da80b54b1f9b112309be18f8a6589c5dbad9ca53b09e3fa299037bc0d96. 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/QZK6J2185794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716064dc92a9707ecb433a73d076813dcd635010cc34c5989200148a136b1246. 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/QZK6J2185795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54f3a3dbac5f963649e0eb1c43778385280e82d98819cfe9d2c774adb33a43b. 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/QZK6J2185798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63e71004831cc1d2336287dc85b6f2479d6ec1e02e82eea41582ff65de4bc1e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZK6H2126082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9cead9b9412878485e3431de495b5993f0da0bf7983305378d3a5cbb478542. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2185801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c347867aeba104e6d5d8e87a9294604a65c8a6e735446985efa46807d30af76. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QM2PV1823971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc05af10eb62824c12ff64b59e174732849a4bf13f932fd5ef456c13028e4dc4. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZDA81862087.
Boyfriend Dungeon: Secret Weapons (Original Game Soundtrack)
Boyfriend Dungeon Instrumentals (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c379d37823b2d22d27df1ce211a5296a36581ea77d08452da9bc20ecacf2714. 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/QZWFE2508816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d9922bf90df31595bf7612224ba0bae8e15477e1f98ff8bddfb4a43a4ccfb6. 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/QZWFE2508817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaaec65095ea936b5c1a3ef2a37c84d97c726990a0a0f2ba933ff145c14c4ea. 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/QZWFE2508818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bb44592e6d89bfbd8124e0c774dcb1a3cbcd3e2455cd7becde0a6a42ee36d6. 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/QZWFE2508819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9524cf663375cc41cbc2254d4da918b18269fa842b68aca01df426f78a6a5be. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZWFE2508820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c7275282ca9ac945573f6e8fdcf7a44fb0032a0104f5b086f17798d27d2f71. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZWFE2508821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7d10ab0f4605a87b7505c35307d31d31e881a6247eaeeeac775676b7ee51fa. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZWFE2508823.