Keiko may refer to: Keiko (given name), a feminine Japanese given name Emperor Keiko Keiko (orca), a performing killer whale best known for the film Free Willy "Keiko" (song), a single by Lucerito de
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 0x5d0893ca72de45732bc965cf68589ccedeb347d29b62e51bfa85b5bf1878ccdb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/781436fb-93ed-4f9b-a625-c69493b48ef5.json and https://artists.proofprofile.net/proofs/artist/781436fb-93ed-4f9b-a625-c69493b48ef5.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 0xe45a44e58fa69858acc3b551487244c3bf9c62525a45e34ae616e4754d8d1d93. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPU902301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d99c120f28d879d7a97967daae1ee3a4f76d42e0d5704fc765ec4f6b12f1d1b. 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/JPU902301129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aacd6e52314a913f1be8065d32b5397f3e3c82f1ab2eac8707e2595263a2ae. 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/JPU902301130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2bba43ac8c71037873641e30b29092f6c484980f7e6d0067f4f0e2ce9232bf. 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/JPU902301131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d371e8f3cfd32bf0e3210af0d85c5a2f8f1084de29012ed2534d33abcf0479. 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/JPU902301132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3b6654fb51be12fd6d0f9dc176a8e18c1e5bfa65c3b3eeade4f4079b2b1d7f. 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/JPU902301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cc7050ac45a2fae622b0ef215930fb0a7b249be3f1770a132674a792cab80f. 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/JPU902203388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6629347264f08a6f533652b6766af707f1de9bda7777d434d750881a417ad2b. 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/JPU902301134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e367f2218dca36d482443a5d285d6536f718885b3892d8122accc4aed2508d. 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/JPU902301135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f64888cb101756745578be8dfbd6738a421d2753668fb035042b0b90c81e4b. 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/JPU901902061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294baf8cad0cdaade374bb659ce66452080f7ff29c3b75a2d63b87d1f45c1d0f. 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/JPU902301136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad85bd889aa778d7189422f451da79e7272b8100417802f935b98df1adc5ba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPU902301137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee29e9a590f65443ec02b11373fb6ce293b6937fc4753e1d36375fc2f52327ec. 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/JPU902301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e0f762032ac6f741e0d807b0c7e46815cd2ed14053f04d5c5250777dee1aec. 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/JPB602203581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfe6fb1fa78accac4f8ecf461c4585d756e87f838afafec7d8b14cebc41e163. 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/JPB602300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9931a37f5e69b7a4cb9facec4631225ccbe10cee783744065d7f903a99f1d803. 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/JPB602300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771c383829cb6400fab699a05204d0989a735a3c5ffb208ed936d8613e7f7b56. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPB602102940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f251ef1581ab042fb1680855969f5053378c98da56309521e1d358f55fef1b. 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/JPB602102943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9bdcd289330680ea1b0360127effb49ddd6312d6f9282736686ea5aa1246f. 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/JPB602103897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6083f680ae76babf1c4beaf32ba09c5df2f0f00f4017a8d0e302a5570f707b0. 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/JPB602103898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31bf04af5db38325b539f21bbf61e48ff38c86507a796afc7ca684f75b3f7e4. 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/JPB602103899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0470510afc02452839ae52a41498ebda526fdfb0aa3402796ee6820b1195c19. 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/JPB602103491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c945a2f08face08cb0f569a20f30245749f96118edaf9b5ba7978107154d45. 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/JPB602103903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7e3459aa4b1c945e6999708e92b7a3c8375d3065b374fbdad17f07ebdef3e5. 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/JPB602103486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a69eb86500075d2cf24f28e26d7c83edcc858a320e7263a281fea774a8f6661. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPB602001578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9b23a519b6c42fb1fc207c0e89f86272112682f39d0a3c3abc2c795251b400. 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/JPB602003382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c687be8b6c65241b37128dd1403b7aef028271e8f566279146b543661516eb4. 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/JPB602003383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f72cb02d4220b9255410cf72d4d7532f74b92dacee9511b133170155ffee7d. 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/JPB602003381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67821a855c3521e83e7dacf5be742311d7ae16929f38d1924a32f290426ea834. 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/JPB602001579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fce13de18eb89e4b834de4bc299d6be357b1c8adf3c89d6dd744d5dbdd9745. 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/JPB602400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7c6c03593d7d0c1ae9ad81a16007a37558822957ae3044bac729bd8af319ee. 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/JPB602400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f44f448eeff145a2cede0072c086e6fd7a022d13cf5bf21055596a7d56e467. 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/JPB602400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d145aa3274c700a24b6825da2eaea32bfa824eaef09ab63d000eaedc69ff5b. 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/JPB602304924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d145aa3274c700a24b6825da2eaea32bfa824eaef09ab63d000eaedc69ff5b. 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/JPB602304924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e0f762032ac6f741e0d807b0c7e46815cd2ed14053f04d5c5250777dee1aec. 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/JPB602203581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f251ef1581ab042fb1680855969f5053378c98da56309521e1d358f55fef1b. 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/JPB602102943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771c383829cb6400fab699a05204d0989a735a3c5ffb208ed936d8613e7f7b56. 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/JPB602102940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67821a855c3521e83e7dacf5be742311d7ae16929f38d1924a32f290426ea834. 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/JPB602001579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a69eb86500075d2cf24f28e26d7c83edcc858a320e7263a281fea774a8f6661. 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/JPB602001578.