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 0xa5ac8b1cd27b254e03e297cba759622e2ab7a198cee4b4d67c7aee37210c077c. 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/bb33b416-923a-44fe-a44e-324fadd9b611.json and https://artists.proofprofile.net/proofs/artist/bb33b416-923a-44fe-a44e-324fadd9b611.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 0xd8432908c0dc3b6333bf4a9db83b6ee1b19762f2757c23a00474327ead1f22e5. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPPO01150767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455674f0c0154e3e39f6f4c8544b6802f3104f0f07ddf3cae0901ebc26422f2b. 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/JPPO01150768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf878a488ada6becf48c72b62690a985d00a830f20b480ad8b8ba6d6e16d7f2b5. 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/JPPO01150757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb2c2a6653bf35f6617aac0db85797fb1e71d626e449f70198652af1805f7b9. 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/JPPO01146419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33592b011907010adbb689e5b02ca2f10a34ce116f68dc763c2c7b9ff0435fe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO01150758.
キミアイ feat．Maynard Plant (blanc．／MONKEY MAJIK）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f83223da4113a6fa2714642d7ae85b98d4d4288aa855e58cda6c0ee8dff671e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO01150759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44eda17f9d570d71e080fbdb5d93d947a86b0fbb15ce216dd834ac982ed32d0. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPPO01150761.
HEY GIRLZ！ feat．CICO from BENNIE K，AYUSE KOZUE ＆ EMI MARIA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac23bb46759eef01558482f73650e9dd26a12c7f5dff3f8e7529c502f80c9f9b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPPO01150762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3813ef2478f3291d9611e7b9d558cd6a8f8aa674d8801652ab38fb751a4103. 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/JPPO01150763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215f2fe2ab74779c45f1aeea26567e8948e2023ec06f68140a4df7cf48f962e1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO01150766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ef100a3fbce0017175afcb33c7de9774ddc57649dd02d4fee9943595bdd10b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO01131280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0d0f9c5bc22b1e31f0ef7ea4d30dc6886aadfd59fe05a98c90f284c8dccb7f. 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/JPPO01142617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cb74a5edf03c32acdec21e133656806c45737083f232f8761ee1f4eaeb5279. 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/JPPO01150765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd639245ad78a9bdfa17ded4ba2926f29a3bc9ea95d49a2ec1f622eb19523ee3. 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/JPPO01150760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5781d8b61d651340facf54f4a3a482245def04db750b86bc4775e85a39e0bc6e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPH370900335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3360eea817fec79690470e28ffb144929eee868178fe5904db2fd04a85e2d391. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPH370900336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd14fc4724b9ca3a597ad3164f1db1f75049de2f5f25d6f958cc8f709a08c19. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPH370900338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bfbd8565ef9e0afb4a3e26fa93010a3d8a96f0d231afd7c82ea4594b4aeca0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPPO01220747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb641f302ca36d79832b098e68a8be58e1b5516cce6d762b6af3280b1fabfdf56. 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/JPPO01220748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9494c2ece11959dbfff546a5924abe6d5b9ca46555b08139e9d92c4e15fb1aa3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPPO01220749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bfa85c66e3e08c44506236bbe052c5c0f2f529d66ed14ac45a5f400532275a. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/JPN001800366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25def7636583787c3009b89f6e195f7cc4f1dea2b1cb7b37b7f15485e7a6a2c6. 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/JPN001800367.