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 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 0xfabca8d8d57374a58a90de67bcc67fbdb65183db5d7608b33eaeac2cfe991451. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1dd994f-076b-497e-b6db-453294507cba.json and https://artists.proofprofile.net/proofs/artist/b1dd994f-076b-497e-b6db-453294507cba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Isshi Souden maimai Shinken (feat. YURiCa & Hanatan)
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 0x76f11477850718fbccec579b0c11dc7191d3316a208f77ee12763369d3dfcc87. 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/TCJPS2244050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0193651404e876f0cc410c1a4a985dbac6d0870594088f0cd2e5f29a89cd6a. 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/TCJPS2244052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c87a1ba1e6181b68414e5d7b53b474ccad6b57d5e6c4a00c799361b7e23428. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPS2244056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf476757aa8f76e490305560f30874bc04988d59d3d3a4d6e38772d5665725d98. 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/TCJPS2244058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcdae667e67c66ddcbe301448b1d64d82b126a21f869fe1164f0b334bd09a73. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCJPS2244059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76074d10dca2cddd56e3c37786f0e1401afd706b7753eaa36de38227437d112d. 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/TCJPS2244060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c2f1f4bfef7d54548601aca8b68794ec543c7910a40aaefb830f1897933ab0. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCJPS2244081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3f1b10c157cc6fa6d5db5d862fa684010de29de4b09d9a9032730872e0dd0. 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/TCJPS2244091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac6cf8d4180166d772973f61301f9a2edced36e7004300544b007b3623a91b2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCJPS2244105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681d76544f37c0a8430b2b8223d946777553835abd0a4733e2afe5a71db2e740. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/TCJPS2244116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6226c4ecf235ad94bb53cdb59f98de1cfebceb9e6d2846771981f7ce07acb99. 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/TCJPS2244128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad53a30d294660887d0eaee285f457fff07e5122b6cae57777d4490bc30feeb. 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/TCJPS2244136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee42fd261de709d7b3a50e536ab9c7a9e379d2e4f3c9b7226910fab7df46e11. 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/TCJPS2244150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6575f950337bdc49804ae4f6a4cc5639a2b6ae668bf7a0b31447dd3bcdd6d358. 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/TCJPS2244162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0486ddb2dd059b641453518909711bd77c3680bc6fdddc6e50c362bc68090f45. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCJPS2244174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05189defea61c612ffd0ad83aa90c62215652a3f6b8644c503bfa31db53ca6f1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCJPS2244183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eae3160ade5a9d84287169c820b69259d5c7fef4c4f24c5b1014a1710070f00. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TCJPS2244195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904d61183ec20d2c42d95120986b729d9efbfdeb7e9ab99533dc4ba08eb2ab40. 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/TCJPS2244206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bdd71aa9686ee5fba6fcb27f44d7b493f4136aafaf5869fe95d977d4b6ce99. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/TCJPS2244219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d4a306e266cf020bf89f9d9f365649504e84192f890cc57c5adb82da1ca09f. 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/TCJPS2244228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5969c83f8dc36d1a2c4b0e2158b0135a6471be387cf8bb89818430ef61ae7573. 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/TCJPS2244229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f11d560a6aa59653ba56262b7991bcceff885a263cdbd4374e8053fa35abae8. 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/TCJPS2244247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca926546caa99b99adf0130f0af21a693963d0cf71acc1a44d54666e54d8001. 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/TCJPS2244249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1010f995f83fa31f98085cc552484d293ed077555dc3f0803a141e3b8de3ed0f. 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/TCJPS2244261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8467b24b4e9d7fb41febec16de356fe286acb6c189a41b3f0d6ce92fb1a33b3. 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/TCJPS2244269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148ab2137d81157dbd608e5b705bf1ab3dca8778a442b9fbf2463b723eecc890. 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/TCJPS2244271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67a4b9167bc8ab30f88e7d838974ef3e1dd0491d1a87cf38fe08c5724c4e07d. 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/TCJPS2244274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe811be06bbc0c9766bafa48d881db9b9de26114f6a94de7935abec120062c341. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCJPS2244277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511246f70fac58e31bcce5e1d1bc1c2917e6b1b2629866c03d4276c2c86ded8c. 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/TCJPS2244279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22c0c0bcdf9d7eb96b823dde370aa540f823ceb2a2843b5641a9b32cb9772e6. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/TCJPS2244281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72900d5b9a93a1c163754236fbc0975f3307a0d817a75f6c5493245682fc33ff. 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/TCJPS2244283.
Hana to Yuki to Drumn Bass (feat. Senzai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5d528c4c3f46c7e862309a35b1fd8fe508df86907f957b9c7f79b1cc9a3d46. 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/TCJPS2244288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb719fda6e9da21b339b8230f5281a497dbd413c93b8bbb5d7aed318273aa80. 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/TCJPS2244298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77f9a1a15aefd2224cf1a80beba05ca0e68a514fb22b2a418d2467634645ad2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPW561804305.