uniq is a utility command on Unix, Plan 9, Inferno, and Unix-like operating systems which, when fed a text file or standard input, outputs the text with adjacent identical lines collapsed to one, uniq
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 0x1e45f464c7c0b93612847b32168a3388a31d79c7c200e8a7b544410a066f3b5a. 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/6308462b-5251-4e72-8f88-73f42d81515e.json and https://artists.proofprofile.net/proofs/artist/6308462b-5251-4e72-8f88-73f42d81515e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The First Digital Single 'Falling In Love'
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 0xec8531e49f0b19036c0c16d093778b960ebe366012b51fd44873540662560efc. 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/KRA381209076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046980dc36a97a1fc32a4b1a02024bfc34f616a5b7b39cfe959f4c4c687f1858. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/KRA381209077.
企鹅哥哥（《马达加斯加的企鹅》主题曲Celebrate）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffbb833140d1fe3bb0531ec4bd26be5399db5561ca753b9e331d9d55db56078. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TWCG52299922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8030b2eba36595ca4ac16b157fe5b9973bedb3a7ed69ad1a515361e951c952a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TWCG52299920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154e1d641966c7a73f22f18113664a66d9cfa31d87b6e418eebc6e155ddf63d5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TWU711400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b81db85bd7cac6ee90223105fd4b57fe5d9f390697e7c5d62d09c164bfb4c1. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TWU711400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74860cfb431d98e713320ce4990490dc1c74abc9551de7b2a3ccfec9cd71f40. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TWCG52299917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb939b392433f371425efbc716babfe5f4dca15c20d3be561948230c3a6429c48. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TWCG52299918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3e93abe3dc3250e71f039ae1dd297560a176b32466bd68c8cc652cb382652. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CNC071500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e62c733688a0c91cae80032f43703eca6ef735a189412cfbc9c0196c2f716d1. 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/CNC071500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f8e13659bd6a63574448a80e58332b99f641b95a1a2a916ed56bca2d40ea18. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CNC071500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235d4e8e6339c5be1761c7a6fb4555e2a4ae0b53b350ea3eb9195acf060701fd. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/KRA381210526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3968aff759156a60bc1b3fbe9341e13a40aa19a3a6b45117db13a769caf767. 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/KRA381210527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31905e3d9597dd6784f6adc0146535fdff4756b564cb7c05d54eaad89a368da. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:55:44Z), 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/KRA381210529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdfc64b4c972bb0d7c8bf0495893b673c4a186882fed6469c18fb8ee2901c73. 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/TWU711500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931f5abeb7536453be3a86a0572236f3b7acd3a6d1bec4f26f0d4e41104fc3ec. 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/TWU711500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e3a864046b09edae2edbde665803bb02ac1a96b45f24c5d2e8cd80858a1103. 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/KRA381500335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcc9257dd331c45482c2551ce654cdbc171d727c6487b9404e0f2207cdc2035. 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/TWU711500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547b74fb39a5aef7beb14c6e4a74337a0f542b446996068d75b60cdbe4942b1f. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TWU711601188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c482fb264d3d15e0730c05362fa72a1af3cc8b27ae8a5e6bad339fd4b8af17. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:00:48Z), 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/TWU711801694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca2b65d9d8e34db4d6379e4aa5e2812d4f3c2d2e5e5943588824d04c94d518f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TWU711801695.