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 0xcc4c0ff1160adba07202b0ff8000b2a224cc3c31e0de3e70853441622df57e8c. 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/f4ec960b-2485-44af-acf3-afa131346863.json and https://artists.proofprofile.net/proofs/artist/f4ec960b-2485-44af-acf3-afa131346863.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 0x18b38eb37f4053ccb5a380a42c970b04ac59c5ab79e7d81c884449f86e53b73f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPPO01902756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c9246a1240b8587b9374fc7e6ec295a277ec81adcaa7dd1bd32243da250955. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPPO01902757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb37a4e71f729cddbc27a8b983a799996bd0f020b09523c4fbcadb05a9284e2. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:13Z), 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/JPPO01902758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ce2b33c53c6d6f48d9a9f5e1a5335799d8e8322bab3f9f0a0c87c624c6e655. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:18Z), 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/JPPO01903972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d18773b929579b8048831783312da38c494c43587082af5fa87b95c2089e3a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPPO01903973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7af0fd14c0c57ea887016982a4037ba870d63b10955f9d167384f81dc136623. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPPO01903975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3493bf463f9cc395308f6936843c5f25895f8ab2f431daa01574bba19e0734a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO01903976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4892b68ad4ef40890458a08987312595a8cc95bf71c2bc10c8ec87e3d8b3f6ab. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/JPPO01903977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e139e9eb53f0c20a0c7b70d1d8509d55a16efb4e2ed9fd4a00b656d1b2078d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:24Z), 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/JPPO01903979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7299d7d6875366c6e00a7bd5fc59814ba46b486b52a5198225bc7618bcc426. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPPO01903980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2e2010f46f6a6db31b553559a5399d524faa3bbd4924564e072abbb88a6749. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPO01903981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98f3e4cdb7d8b0a2eeefa9659cc54e5feff38228818c14544f00e07a5b108c1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPO01903982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc8129d1e296f4debd8241d0acba3fd3cd9ee2da044271145858ac937b1799. 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/JPPO01903983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e21cfa820e4f16c2343b8b80c28dd644cf562f8645c1d3bc34b3570877c4403. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/JPPO01903984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b5b0fd57a90e643c1dff1cf71052ff5710113f7cc07853fdabe24aa7dc5197. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPPO01903985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4244c911cf330133ae673ec9de2065ca394c20db8e9f85713d81b71d34fa68f9. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:44:46Z), 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/JPPO02002219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8172a0bbb695737e0bde3339ac9370b6999a7033284960429f81b42403e35b42. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPPO02002218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4244c911cf330133ae673ec9de2065ca394c20db8e9f85713d81b71d34fa68f9. 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/JPPO02002219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a2c3a7cbc976fc70f4c139176c381fe1a1f42452d48ff0dd11e42e7d53c7f5. 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/JPPO02002221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc6d0ba4ee15d914df1b01f7cc5b3632893db85f5a36684a956e8fd09a689d4. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:45:58Z), 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/JPPO02100992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31f66ab61d1caa4d96947dd7ea9f3e83d7d475b4e674327d60337c1a6f682f5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPPO02102482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ffc0e7c2e7ed532055d87b80860de79468e25e9990c3b2e720a346d9eee84. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPPO02102483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987b681edef160c572a5d871f916a2dd88614df8234f731e96c05285afb2e36. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:10Z), 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/JPPO02102484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3209fc9033ab8e498475cd615dfb85a9b963e1e7d25b02e375c8237514155953. 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/JPPO02102485.
ありふれた日々と、ありふれない君と。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aeaed690ce8323e83e707b0ac38c004f1ed87a0e254f2d112a092ea4326fbd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPPO02302650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca04cefc8c7b998822fde06d0ff10ba052d7a8182b6c7d6d0008eeb12e45cdbb. 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/JPPO02200748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5054f9ab12016e77c5a93038430029597ec5e0e2927f088c49806bcb142a882. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/JPPO02304490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dea43b2cdc813d140d590453e2a4d30f32de3eb07e643b94cad4daf28b2a49. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/JPPO02400992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21be5891d9b82f2688970c148027f50a15ffa3f6e0d2f111f9c72301d4ad3956. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:08Z), 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/JPPO02403176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe8bff379aabdc86ada27068c87da6b87f02a7fd7cea1042d96512744646067. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPPO02403557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d0d992dac1d6f2f1a8308e540216089e7356f6fffed5adf15705aa928782fa. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:17Z), 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/JPPO02403996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ec33e787643586fd450e159f36227c991e7338a0bd685b3b6bee075311174. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPO02404843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f51add7ef76d74769faf986b5e06bf08032df3f844b79093a3bccfbe85e440. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JP92E2500521.
ファーストステップ [TVサイズ 【テレ東系列「おはスタ」2025 テーマソング(るぅとver.)】]
ファーストステップ - TVサイズ 【テレ東系列「おはスタ」2025 テーマソング(るぅとver.)】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfe89f401821b57361382f9a4724c23f3eb313251229642afc632ad809a45e9. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JP92E2500613.
First step [TV size 【TXN Network「Ohasta」2025 theme song (Root ver.)】]
First step [TXN Network「Ohasta」2025 theme song (Root ver.)]
ファーストステップ [テレ東系列「おはスタ」2025 テーマソング(るぅとver.)]
ファーストステップ - テレ東系列「おはスタ」2025 テーマソング(るぅとver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe007406e1e419812f811a7e9262d3447b3f66a996ece687e29f229f0973af28f. 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/JP92E2500983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291ab610e1670c8ecd30bc6a1fb3bb6a4bf11b86759c42584d435333818c33d0. 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/JP92E2501243.
イロドリステップ [TVサイズ【テレ東系列「おはスタ」2025 テーマソング2nd(るぅとver.)】]
イロドリステップ - TVサイズ【テレ東系列「おはスタ」2025 テーマソング2nd(るぅとver.)】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e6e1b18fd8a85dfff86da41b53788fc039848f0af6bb72dbacb83769babd3d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JP92E2501423.
A Step in Color [TV size【TXN Network「Ohasta」2025 theme song 2nd (Root Version)】]
イロドリステップ [テレ東系列「おはスタ」2025 テーマソング2nd(るぅとver.)]
イロドリステップ - テレ東系列「おはスタ」2025 テーマソング2nd(るぅとver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fcd32d7217eb005adbc806df47b37db6b19204fa611476b399b043e92905a5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JP92E2501425.
A Step in Color [TXN Network「Ohasta」2025 theme song 2nd (Root Version)]