thumb|Ukrainian children in a shelter in Kropyvnytskyi, 1 March 2022, during the Russian invasion of Ukraine In contemporary international humanitarian law or law of war, civilians are people who are
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 0x836adb74d5eb708fb45a18973042f86b7bd8c6da806ebd7c6f02f5d82374ccb8. 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/f1d71612-2c88-4bb0-a678-4870f938073b.json and https://artists.proofprofile.net/proofs/artist/f1d71612-2c88-4bb0-a678-4870f938073b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
WHO LEFT THE DOOR OPEN ? (Live at Tokyo KINEMA CLUB 2023.07.18)
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 0xb6ff2b7a24d4a79ee78d36264108862ba29f23d3a61bacd5ea2df7d8e2d314dd. 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/TCJPV2381348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdb3e96ea892353ba3ff96625053649cab1477d5afab2127330ab1bf64a144a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU902101069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ace9ffff908d4f2e7342531bce50e14e6b605a2d31e83ff248394a42c5a5d47. 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/JPU901801686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f1cfaf43aea19cc38b24769b4ce5b235628e1749d58a87ba31ff713b960614. 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/JPU902101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b39c91dc50d371c943976458aa3568ba2a45761a4baeb1fcf46fa843f3afcdd. 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/JPU902003516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493f45dbf64ec518b348739045aa2ccd32a5d5c04b5ee7a8135e79f0f197cfec. 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/JPU902100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ea58013d2241b44a3ff687b8ea28deeb717bf296387cfb9dadc291db8dfc65. 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/JPU902101071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122b731f2578368da753d4cd7a503e350ba80e70b5902908fb14fc740aa8b140. 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/JPU902001456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768edcafd3dea5235350c31ffe1a14e91a1ec3c5b7acb3daba8a5198710ae43d. 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/JPU902101075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc263a7515eeedeae671a03e686b79e20d7a44bb20fe3e8bf26e0f7f8360c1101. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPU901703107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05834b34e33b219f89e6b10488f9f0b571e91efe292fd07d07b97d643cd6d6d2. 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/JPU901701775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbdeabc809347f179bc7eda95e882780516eb0762890b25d00edc487e5b75ed. 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/JPU901702907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c62d493b0fe5ff017ceb16605bd3a05d64797de266956a8158541e87cd35bf. 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/JPU901703111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8ceadd7da4db2e8af20a3af5638332da6d34642c290098e6d89bd29a16e49d. 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/JPU901703113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493f45dbf64ec518b348739045aa2ccd32a5d5c04b5ee7a8135e79f0f197cfec. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU902100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b39c91dc50d371c943976458aa3568ba2a45761a4baeb1fcf46fa843f3afcdd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:41Z), 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/JPU902003516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4391ba7c5b9eaf71c6f8304839a6d644231bd8f761bb39357f8c03ece08fa0. 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/JPU902100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122b731f2578368da753d4cd7a503e350ba80e70b5902908fb14fc740aa8b140. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU902001456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a99f69c3e5e90a3d93b88a318dac990adb14e92368f3238f88411fa58ae3a79. 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/JPU902001457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68540040bddf01773200e19c929df2839ecd0096d44cbbfae8e979caa6898f6a. 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/JPU902001458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9252aeb96ba9322f5d57a97f761a24c2c55e79b470e052e2a1a6c3cd3de2f65. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPU901900511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6a3fcf219d24be342150ec8c64f1a01aed84334bc4adf3e522cfad9b43f2ce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPU901804324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0a3084a31f9ae001e271a3931a233f9a6fc0acbf8b5fb6571c8dd2148d572a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU901900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6a3fcf219d24be342150ec8c64f1a01aed84334bc4adf3e522cfad9b43f2ce. 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/JPU901804324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ace9ffff908d4f2e7342531bce50e14e6b605a2d31e83ff248394a42c5a5d47. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPU901801686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c267618ac0b0b4d339798893c5a1656fc0944c55c03b5101554c9ee849d5c1. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/JPU901801969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9d250960b72c7e392e062f2f3ae19cc8c84b6e94ff20b803ab6e79563e68a8. 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/JPU901702908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b51ff6a128583f5b5c8651cc46e36e0c2a0c973ba5a82538a0e1d02dd642dd. 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/JPU901701774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05834b34e33b219f89e6b10488f9f0b571e91efe292fd07d07b97d643cd6d6d2. 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/JPU901701775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd402fd24fb3a988f8a8f32f198959d4064e312ca7d438333902f8bfec09e37. 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/JPU901700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d2b245676129ebe823df8dcf1848cf3c9bb11409a433be702f4f72d6f98865. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:49:38Z), 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/JPU901700279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd402fd24fb3a988f8a8f32f198959d4064e312ca7d438333902f8bfec09e37. 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/JPU901700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb49ba0e70d4ee35bf60413072f82eeb9d5bd4fd7ffcb38af0a547ee043d384. 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/JPU901603098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaeae2b8b80de4ada6e2115d24ad20081bd8d6278b5bc4fa5a24bc3f60eb46e. 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/JPF551600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3ee4e28e96310a31698fc02f86c0fb87d0d48469c5594ef1edb37cbf7d9793. 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/JPB622200514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240bbd2b989d65b3724ed672b8292c60fccfae4a5b65e6d6e63af2ffd8be7cce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB622201495.