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 0x8223f9a57ab6152e2f2b31d7c2f3526a662964b86937b0a8700ead887da47bd6. 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/14f8e89a-4818-412e-9504-16d361b4f86f.json and https://artists.proofprofile.net/proofs/artist/14f8e89a-4818-412e-9504-16d361b4f86f.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 0xd9bbfbe8de0646799d6239dd6bc0e77238230f8ca3adff26e9ed06d4067ef84c. 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/JPR502153328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b09f6ecae4c52872f82f30a199afde52196ea30a3ac8988ddd22a5afea95cb. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:08:07Z), 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/JPR502204986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959da42a1ab645b2292cb5d6d3dc78bb7b1d13e252f41ac742f024b1098e086f. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/JPR502301053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d9a2b8ab69d5aead18408430651c298d7ce9ff7fcca65751eebbd10d6fb67c. 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/JPR502304135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe303b4ad6bc58e535b3fe9407dd639637be5ba7221b8927cec84d0ee03a66874. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPR502304736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b125aa8d4ad7fbc40cf25a3309d236e62b0506a7a59eb842aa855dcd537b0a6. 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/JPR502401521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84536d448e1b210b441a57de900d7b9e7fbc9996711c720630fbbef47d731b3a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPR502401522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd236b7b581cf6c2d0dcdd675645950d6029b90ee83e4cc2f51250b555dd06504. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/JPR502401523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f50ef62f667b5dacde5af007c2d80d90e6ab7280acda8531960acb3b90b1fb. 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/JPR502401527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe212df1e2f42a64d5dc77332bfe5d4cc54858427173e009050fc23db3f2d1004. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:05Z), 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/JPP302400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30595d20388060725f73aa5c9849bac7c520098f2b7b14c745d6615547f81a8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPR502418993.
音楽なんか聴かなくていいように
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ccd6837eacf98a0695e54d176aee7c8ed15d3267a782bfe0057970ae5e2ec. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JPR502418994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb32f6bfb367585b9813f4729247b25c59c244d996e83d712c45837ed14d041. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:42:16Z), 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/JPR502418996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcd764b1e868a02b11e983962012155dbd6f9e219c39422e4fa4b3f6d36288d. 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/JPR502418995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb32f6bfb367585b9813f4729247b25c59c244d996e83d712c45837ed14d041. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPR502418996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41308ea0c81e449361d521394eb3d46c09fefe440a6fb9316d0d9d435b0b2eb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPR502418998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b19f07b1f2f6fc0a6002e191da4a9ada25e985515928f3c3397f6ed9a1c1ea3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPR502512452.