ksh:Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third-most populous city in Japan, following the speci
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 0xc6255f4f7d1ba1697051dd67919a819c1fbbc58b77bb9f0d71aadbb81dc900ae. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b006bc83-6fdf-4f76-beb5-9cb23a9f5a5a.json and https://artists.proofprofile.net/proofs/artist/b006bc83-6fdf-4f76-beb5-9cb23a9f5a5a.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 0xfba8d183b3bfa665d11e79f097b86940b8ca4845e470622216f60d4326f63243. 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/PL15N2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088d1efec8952a815a02a1dd841bca135f59fb36b7f157264eada5dc016451e4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PL15N2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04389aacfd6d4ebac9af2db0ffb2ba5a7c13a1f4c7905103ae608119488ceab3. 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/PL15N2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba51e3d423026a6146cac35895e7810c380f4c9005bb8fc16b3c75d55ba5259. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/PL37A2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe474fc7f476c6b68d670116fd0a3eae5cebeffc1f6f6f60c90d18481b045123f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/PL37A2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d4f77902eacd78b485934629d2ce1f4d8ffb2c9f8a91fca40bacc910ad50a6. 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/PL15N2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8320b9e34c83db8f99a531f3dd5b199fe18e6b05bde8cf488cb35b7f973ef4. 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/PL15N2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a2f6c1421480aeb9a5710bb55e805174931e36911ff552afd7ff1eae98702a. 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/PL37A2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe633b749614fb619241ff4ec83d510591d11defea2f4384f89fedf7adf11ed5f. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PL37A2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdca01f103ce87fdd9fceee48322b7b29700ad791cc13a32a973f50cd178285. 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/PL37A2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb33773b92f9d220aa251b6be3678bfef52fbfa48daa3a81948ecfae789fccd4. 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/PL37A2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687c720f6f7b9f7adfd0e544f71e51f91a2ad81ae3f15954558f4cddcb9e5834. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL37A2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ba1ccd2d87272a8adf5e8c304b076b2c8ba31c8cb15b4ba73dab4b893ed89a. 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/PL37A2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb57dd4c24453bca91d28ac67c52f77f075d06fe7bddf35e134d80f8866e486f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/PL37A2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317e0d01c13051926c03048d6c210a8e73f051c6385f99724fe7f68cc36b3235. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/PL37A2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba549a62642546459ff67372e4f04023762a7fcf4b03efa72d956f81cb0c31a5. 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/PL37A2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde736eed8b8bb17d2f5efb553bc19f52fc628d12a9eaaef05074c2712f855c3b. 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/PL37A2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc702e1ffa90bf241ca768421f2c42f75dfa5668d2ebcf45d316ec185245ed364. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PL37A2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4a9bada0440a2249ca7d135977be0d0f4c7f7a24e8ee655420b29596969940. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/FR0Z50103643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f82019f208ba9a65a84892cee9449803901627fc2d3cb7acf0e104dfa3993a. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QM6P42372942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf2ae20d424a8f7a2f9e3b900c19544503391862c97419b66ea4d261a2e4335. 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/QM6P42372940.