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 0xe9cbc6863b94379539429981827f930bbae08d1dabc64d71f84889f47c7f985b. 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/1b4e4fee-1ff3-47f3-b559-0af93253772f.json and https://artists.proofprofile.net/proofs/artist/1b4e4fee-1ff3-47f3-b559-0af93253772f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
うららか-美しい日本 箏&ピアノ Beautiful JAPAN Koto & Piano
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 0xb8e312ecd0c40490ada02e88b362c917eeb78aebbf88d7082ff7cd98df7c4b8d. Chain 2 (Bitcoin): anchored in block 957244 (2026-07-09T01:44:02Z), 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/JPKI02414252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd543bba94601f60a177933d556faa08520335898ca29138797b671d9bb968c62. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPKI02414255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986cc1912e7ed84af566180397e08f97040f942d1e599d5393a442be46a7a7b0. 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/JPKI02414257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e71bb825d73efc5d2cee761abd09354ee3b1d4395eec88428c6c378cc8c292. 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/JPKI02414259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2abadb3004c0e1b8938a533aa17f3bfda6c293a036cc0088e0189f5c654eb8e. 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/JPKI02414261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3924d0a940e165aee61d450057e8aa5ee848561013b777966986d338cdd5e3e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPKI02414250.
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 0xb6bd31bae4c2296b501183d0ec959aa9d8ce4f2ca9309d0b8d2f6d0b476a3bea. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPKI02414251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcf87a4077ce019eddb25a31514857e7fc60e7b4035b38ae3924eebcefbf23b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPKI02414256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2424bad2d556adf71ae91415b4bd7e65801498b0092e7fa7aac71452ad136ff0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPKI02414258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc98abb414ebd6b3ae4251755f1418a4c99e5517e6982aa135eaf781ba47fab8. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPKI02414260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45aa46b53f92bfedb2a54a4b6a7f719f321b7c0007bb381b1704aa1cb6089a28. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPKI02414264.
風の住む街 Wind Through Stars ～Piano Solo version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58096887389ddc03061a5d50bc2d47c4ed701bdb08fe138430365afbaf2dcf7d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPKI02414046.
Sumeru - Impressions of the Glorious Tang Dynasty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6169c502c80b441a54b61a5c7a11cfffb15aaba66f89059f0710203946dc7258. 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/CNZ222300743.
自律神経にここちよい音楽 ピアノ クールヒーリング with クリスタルボウル
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54182d2ebc1eb0bd3fcd7d9a1fa821f1db2e5de6c585d346484ebea63409787. 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/CNZ222000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58957456b8a11d22168815a2ece0b78c1881f0a54cb8da16df166f0baaddb4a. 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/CNZ222000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aacb9e918714410518edfcdd988614193337d2949f7e7c655c3b6daa32a84a. 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/CNZ222000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f3104ac1a88fd28e055e9b4c806a14e8d93bf31e2f6a0fbe5d5110491f3716. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CNZ222000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c1c4d566a7d640b0bc2c8f9472af5c5c55ff95cc1b290f2ad7d3de5b3f38a5. 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/JPVI00329690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25adb95374bbbcf911d0f16d53bfe3f1dcfd22a2fc072d56cee60916cc8b73a1. 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/JPVI00329700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d436d13d80b3982dbf56774a6464f1d45b89b21010d24fa2eacdcf4d07792b. 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/JPVI00329710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17127cd4a044207f7595484707d39d76b24cd497294cb00ab43097ede8573807. 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/JPVI00329720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723830e775937fc8b9ddef65bd1d73e9a9261f4cf2f82d9f83f66e7df230b9a3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPVI00329730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4f8da807622a8f6f25cd89da812d6e911473804b29efd69b5e88bbcce3aebe. 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/JPVI00329740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08a9ab52217abd3e29705ac42bc30044b14f2b350bc2d3e3b2d14c6535a179b. 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/JPVI00329750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71594ea46066d69754c4ebe9ed2653e9da8e65caee6f12d3162ed3b0204ed6e6. 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/JPVI00329760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831838b885cc4ba5bdcee1b6a38c1474ea96ea7a0b295bcebc5854da0b1c583b. 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/JPVI00329780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c15e929238eaf646597b1545be9cae45d5ba63a1d54e86234650376be4ce280. 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/JPVI00329800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026d15334922db33e7c124532687792c57f2246c276ba9b58775824d9ba0bc25. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPVI00329680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e932cbedf2ca9bf163c1a802fc17672a6b234254b25e94cb23864611307e53. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPVI00329790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd831bf46dfa15c91d0f0f6f4e59eb9d259771c3aec77c439453c8526f5a8eb5. 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/JPKI01916346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991ff32a51bc80948b0634ca80325bc7f72909e5f3f311dce41b068389d24983. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPKI01916686.
ウエディング・お祝いのためのお役立ち音楽 ベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064959b7a563003c0161a3e881a3a408ef2169857590794679d91308fa37d5e7. 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/JPKI01620481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0111622723417c4ac06a7c1205c34dc64c22775c5b3b98842f1ec6c8b05b308. 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/JPKI00100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca9be60792a3fce11ba1f2a2c6ad2d56b40f1b21a8ae3c11a12912360d5bfec. 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/JPKI01916345.
Love & Memory ～くちずさみメロディーズ オン・ピアノ～