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 0xe7f31a900605fa53a8f5e4cdd8e886b47439f18e46c533cacf495168e4a2b713. 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/f81f6dc6-96a3-40e0-8fae-0b8b6cd57bb1.json and https://artists.proofprofile.net/proofs/artist/f81f6dc6-96a3-40e0-8fae-0b8b6cd57bb1.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 0xe6f8f4c255b73e696313db8b58eb5e0483777220355c941a8532c8ee727ac1a8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPI100903364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3401a2922efa31946a9326c88847638566268f3b5ac4909c9fa36acddcf4c2ac. 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/JPI102200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b02a1aeb24461a760fcf272a7b2969474620fbb940e51d85c13c585750b473b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPI100600632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b6549ed5d133b4fe94d128fc6d355d55e3e2c64492c4d12acc7b558595af04. 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/JPI100600633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c3439702b65af8318edff7f88cb203f46061fc7317d332b5784780cff001fd. 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/JPI100602105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f143c65696e5aea1e93f41cae632a412d8d67da2b823391f8f220df9799d72. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPI100602106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6154bba5f2330d94753de5565db160a09ca37e0ce0e1c0d68b6fa33a0cca6b93. 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/JPI100702845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d055c40a22e3106ade470142e3f93b6dff92427b4a58c6b23917b9e16e5b9c. 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/JPI100702850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa020c66e6980e668df4003afedfa03f59d25cab2464e5bc509ca12f22aa83c42. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:56:30Z), 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/JPI100802555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739dff3e1add49bbb4926c86aa765e7b9e858d8e3d1cd976ff59c4673d2d217b. 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/JPI100900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ae10a59672d3b259e52035281a6a518ac22c64f3962104d7e2dab2e60e9c08. 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/JPI100900343.
世界が夢見るユメノナカ/最終未来を見せて!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6154bba5f2330d94753de5565db160a09ca37e0ce0e1c0d68b6fa33a0cca6b93. 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/JPI100702845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d055c40a22e3106ade470142e3f93b6dff92427b4a58c6b23917b9e16e5b9c. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPI100702850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9b746edb207d4f5e6408325bc088e14c999c89755beabe97901e4a34ba488. 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/JPI101602177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bcad26c6147c32f7885b722adac5ee6185b4ce4cdcaa8957362a58b9653e88. 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/JPI100901750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4650109d7df1b376d9d2cb3e023e5f4052e9bc1ae15f9b86d5fed03e126c908f. 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/JPI100901751.