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 0xfb4bd39ee2297e54a874cd1d09aa3c2c5be5030f056151ae4d23b8a7840dfb4f. 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/0b160376-8891-4567-8e44-ecbc77a72d28.json and https://artists.proofprofile.net/proofs/artist/0b160376-8891-4567-8e44-ecbc77a72d28.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16df9db2ed35dbe9c3228cf9700437d5affd47211dd18da2124d09cb731c0f94. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPR962200224.
Cruisin' (feat. SIRUP) [Rework] [yonkey Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa82f6766e4d96f1b77842c549ee0364f89d65a68eed1a36c23e0b75a9b1a43. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPR962100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf3eefdc28b74db4a5f50c78a5635751d0a6d19f63fd8da9a729163507f8db7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPR962100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17e449481fcaa90b2f300c709701a4cdb2ea4ca48891ca1d3bc8162a910897. 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/JPR962200228.
now - Shin Sakiura Remix DJ Mixed Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce09ce6a50fe1116522d1be7105d85100b90d831bcb4651b123c29a9a5bfa18. 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/TCJPK2097230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32f2a3fbf43e7bae2a88026ad6d1ccdedf3572ab95960718dcd6609eecef57. 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/JPV501900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32f2a3fbf43e7bae2a88026ad6d1ccdedf3572ab95960718dcd6609eecef57. 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/JPV501900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1566336a223c96b2f9b08b08e193de818aeaafc78c2ecc98187deaff884c302. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPY492200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27654484ee0dc0493eeaaee0802b1008651e9a9c3dbab19d70da2c5a423242d8. 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/JPY492300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59f73ee96497c6c0b93b4ad3213f627ae14f75b2c450e69dfd97d7867272825. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPY492400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1566336a223c96b2f9b08b08e193de818aeaafc78c2ecc98187deaff884c302. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPY492200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa50cb03b1d5034c021626d92aaa6f00e168836c83148b369f7bf4cca9e50ed. 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/JPZ922105175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb534d172cb31d6e11d4f3c77092db5993c416c8bc812d15c7242a7a61bba354e. 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/JPR962300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de68907ce4e4091edb4a61c6dc409f4569f0960615a2e20bdbaa1e10a234469. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPR962300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a850713bab55549b8f6a1a356f06b1e521af96d5affbffa2a07aece11f6c38. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JP92N2201562.
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 0x044efbe82c8414be1e26994625540c74f7b7802d3c38f6bae199715ed95a6a13. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/JPR962000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22419fc98bf00fa91013956a026a57c4b98cf9e5d2bbceb8468e0bf3b211a441. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/JPB602170083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500440a0464ac37c37aa09ecd3b94285a8b299afcc1b514b82643f119df1f3c9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPR962300239.