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 0x5e708f7b3262cf1d938de4611acb1f78903ca39752e77ada913bcda221bc916f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2013d05d-ee66-43c5-8635-779b7a007a47.json and https://artists.proofprofile.net/proofs/artist/2013d05d-ee66-43c5-8635-779b7a007a47.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 0x435f994285f55f7c0758f64a0ecc8d38ecc4a705b0bb3d9b7f36806273cd759b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USE831543532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbc7291e6b2dd78add625b4bf0d853a4919c9509adeb4aec6518e65835f5b10. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPPI01701610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b48fd5c22734e73ee08c4f47eb7f7f554deb434e24c8e6a4e5184ff192a7f1e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/JPPI01701640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5659b3f399c731c6f20710c09f4fbb4a0b3b7a251c1ffec6ed08d61c780fd888. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPI01701660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00636b8187b8a48b56864948325c5b28773b5c41914e724a2460e6061b2e7e65. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:24:22Z), 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/JPPI01701670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af3346d4f8c16b940950136484fb50a874d07838a5bc69c2b5d72417c7aadaa. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPI01701680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867f07baae57e3a521b112d9e8b28711e0843e0844570dc4b81b2f5c7f39c118. 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/JPPI01701700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbc7291e6b2dd78add625b4bf0d853a4919c9509adeb4aec6518e65835f5b10. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:18:15Z), 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/JPPI01701610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75ff823f44c1fc2a6e2c8c64adc2ab67567680b1f887798b806b6f5ad25a9e7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:49Z), 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/JPPI01701630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af3346d4f8c16b940950136484fb50a874d07838a5bc69c2b5d72417c7aadaa. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPPI01701680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaa17feeb6881698c25b78eb4c9647e9c6174499666bbdb1b73d4106ddefa14. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPPI01701690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867f07baae57e3a521b112d9e8b28711e0843e0844570dc4b81b2f5c7f39c118. 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/JPPI01701700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595e7c88c200e33c1096095467f0a6246b9173b3b70e8bf3625ba61a7f2a2067. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:28:05Z), 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/QZARB1895166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ddcae338b065f0f54233977edbadaf588baf47df64e5891affa1d61d687b0b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZWFP2428486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ea5d5298b98b3ccba681af5d63a37e3ed2cd6479ec6c80a0bf329723ebdb8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:24Z), 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/QZWFP2428487.
Tamayura Relation CHUNITHM Original Sound Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd037282a78dd1ec3cbb8d091352e9de21ee008d717d178893f57ec2d3bd129a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPX301815380.
CHUNITHM ALL JUSTICE COLLECTION episode II 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0aea3b2cf5adb8cbf2faf94581a48d4414ad9dac225e11e53105fbc2d66c10. 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/TCJPS2246914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27eecbf30dec4b143373369bf63d05f3e367bd5e78f9357764f7c95e7decda6. 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/JPT362000014.