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 0x169d325a85cd48f16771b660b1bc073040dd37525bc3458a3d08efeae0887497. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a206b030-a675-403a-88b0-a72df4c19dd8.json and https://artists.proofprofile.net/proofs/artist/a206b030-a675-403a-88b0-a72df4c19dd8.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 0xc73a50244428c474fc854491aa5dce7dd4dd64805bb26a0520e9c41cd7b9ab53. 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/TCJPX2380178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f31dde12527d2758348075bc40ad7ddef385da725e80531e6c19ddef63ca9b9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCJPX2380180.
インユーテロ (Live at 渋谷Spotify O-nest 2024.2.11)
I WAS WAITING FOR YOU AT OKAYAMA-STATION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39d1fc421b16c009d30d8fc5acae3412b4cbcc5c9c7b3ea134507e3e8acdf6b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:40:10Z), 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/TCJPG2512961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a34567d8e6c52706f2b27a8d9cf212970ca60de0998aa3ec16074292ea0ffb6. 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/TCJPG2512968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a795285f29de320eba805339b6185e67958dac4c1dfbdb180bda6d09c0aa3e5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPG2512971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759bb74e561fbcb47c0ba500bf3bb5bcc0cbbd636466531531fdcb4d6d0c89b5. 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/TCJPG2512975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d72df498e22a82c461229b0e5576b1c669a2e46d220c7c807f8b0403e899cd7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPG2512978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc733b5b340c958264f604897d39d2b316542c23b58c5be585cecb6f98063991e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCJPG2512985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb41407ffe4f6560baf51749b295ea3bba68372d4be879a285ea407f0ed23a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPG2512987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb35d6763c02980673b9f88324bcd869972aeef0c093b7500bc75bb85a3b633. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPG2512990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec95ca6e8fa010d5c79c88373ab1d7b64aea7321178094c3b4c224d467d2361. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPG2512993.