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 0x6ccf4234a2330abca8cb1862639dc0010e66b193931696d7bc7939904887c0ff. 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/80c5e501-25f5-46e5-a3e7-22d5b24e1189.json and https://artists.proofprofile.net/proofs/artist/80c5e501-25f5-46e5-a3e7-22d5b24e1189.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 0xf448b46f183fd56f449d8d0709e08171f6730119299432621dd376675dd9b4cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW562004574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc5316fc80076f8ba310f3f788bf1f1039466f19c771cbb3669b20daba2b76. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPW561902572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe069edaf51fe61c8ba213f8da5a762eeea60adb89549dad9f3b93bea22da9051. 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/TCJPJ1946889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83550e8acadccd9c448af9d00cee5e443a39149475d30fb72bccb36393fea29a. 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/TCJPJ1946892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c16791c6e314eb5c0a603a78a46cd9598d05e2b07bef2d8a12b0f398bf1dcf7. 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/TCJPL2027752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329338ad65dfab593696e4230a63f29f17d6f27452d5b151b44e4d3fc8a9e118. 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/TCJPK2026264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58ce71dac3892c86371d1e557f5a47a4b928257b41c9e390142b7fcef40176e. 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/TCJPJ1989056.
Hello, Beautiful World!! (feat. Kanata.N)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00bc72f41436ecba4ca230d4abd765ddc5bf9564fc04125743c1a69772e27bf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPK2061024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9b65f8949226881f6760eeeb6a5bc2659f9a643a95bf98b7d035c023defa47. 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/TCJPI1999326.
Pastelphonic pt.3 powered by Guitar Pop Restaurant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694fdeede51be6364f368445916c7f9648057c73d8edefa0663378099771f704. 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/TCJPO2161846.
Crystal Clear and Nothing (feat. Kanata.N)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f7ca730830738f124df4181b42d5c6fe73df70863e2fdaa7020a52960ec589. 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/TCJPI1999313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1031bc2f701ce890134cddf508822e807bb1ad48120900f0f540ed0dd6924c2f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPW561904492.
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 0xc03cd08971ea1a5e35db507a3f03e071d816a85b9e438684afaaacd6f9e7884c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPJ1922448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd97d8634cbc8f66e25a57b1af63a3aa692daa9d9b152b26045e141eb6965e7c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1989049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87bd3565469ae8fe6a2823ead64a6868bc26b0fdd76aa9886011ae5639ffd21. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/TCJPK2061031.
Core Signal [feat. Kanata.N] - Aire Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c2db1e936fb2f822d2fac16d6f131e42d848ce5a4a6b12b2b1b7cb9a7f670c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCJPJ1922360.
Crystal Clear and Nothing [feat. Kanata.N] - Avans Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aabd47eaee3197f083c3a87d0659a3136335a6916559c3f503965172bdd61b8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCJPJ1922394.