is a city located in Saitama Prefecture, Japan. , the city had an estimated population of 149,826 in 69,859 households and a population density of 3100 persons per km². The total area of the city is
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 0x03afdab2ad84e8dd203a82e1ff74555e571dc687a4b2cc6e6494a9404e4bc56f. 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/7d5df27e-5830-4141-b0f1-c64b65365fc5.json and https://artists.proofprofile.net/proofs/artist/7d5df27e-5830-4141-b0f1-c64b65365fc5.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 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 0x511793d4f96fc62ee45524bdd7ee01897608dc832d9ae70a8df802dbb180f5d1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USR2M0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d50ba46e6d1d4c254267044f0e5839acfc1904408927109b76fb574fa644bea. 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/USR2M0500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ba9035e60cfcc6a176c011c252dbdc4b3de8248b4f0435d57229eca6468e83. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USR2M0500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc93130a307577f2c272ac77fc826d5fc41cf2f336949d75f9dbc95afd514c76. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USR2M0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71187164147c06fa6eb35d7aef4fb28a108a4c16d89012c4a54cee5ef76a22b4. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USR2M0500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b53c0068d5dee93407e1414bf8c6f8d62f45762138cfaf99e4513575397d8f7. 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/USR2M0800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375761c7391df1f0bca644fba1196243532e4411c062aa4e9319c34a0414c17f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USR2M0800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ce6e4739c5f8c3bc06ce916142bf5f4b805f692b6ea510f86fb8bbddf817d3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USR2M0800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb607d93f125f58aa0eadd89b508cc250098520d8cb73c81adb3aacf8666effe9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USR2M0800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2df6d5c16ea9009b4c369b722bc8247eb4f7e833e6edb63d05d230477492bd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USR2M1600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb619ad0064afb67d35404e48103189c56fb32ddce1d33f55fa1bd6eaa1988205. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USR2M1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee49d45cff18fcf4ecb12cb61e9655823a6db63a16f1d8c487edfc98a6c0056. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USR2M1600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcf88f2218ba36a9b681e6e6b9230f79f0709b3f3433d25df1c6bac1995eeef. 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/DEHY11901017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb6c783e8d9cf52bc196453ea7a75afac44d67a0db938ceb48d00bfbacb6a42. 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/DEHY11901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a1ad6cfab4f698a91403e5acf34a7097e82b1136a8d14c359c24eb7de3dcac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEHY11901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f55a226803880ece010224a1311c395bc616ec301142f637fed2c9f6f9f1bc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEHY11901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8a7eb8a2c7d687d0f7210e87382f5589ca757220f7753a25911c55cd59880b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEHY11901021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c097e7ce98445d6de3e54f4975523ae3f4c2381e915ae06446acdf90f8e94f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEHY11901022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be960789bbd8b6f7d9a80f7de623c8c08b4d766259b688b860648d6f462cfb8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEHY11901023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005545d0cfcf35566d8779427a6d64e63cde315d7e4c0f858b2fa1fcd3531470. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEHY11901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea36904c173102f820b86de6c8c022e012cb750f496b9c6b7654e315dd0b5e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEHY11901025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662665a70c33ad17e2def1bfb27f9aad69483249e91cd26d7bb86a3a68d28a9f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEHY11901026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfa6ca9282866351354a0813235c0dca31fa4d9ca909a7d7029592d1f13434a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEHY11901027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9b1cb8f14fe6536ba34cb97dbe9edbe3e62680b19e6d1b006a2b87dab145cf. 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/DEHY11901028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84a154b65758c4b1902e187677c259a2d70a3d000f7f2515a0b976eb4a5b4e4. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEHY11901029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7570d66ad69a48da56a9f728a4ed08c7017964126ad7da6b5e688754bda10e89. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEHY11901572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fa1ce57db8d2b090069a9c8072f92ba4eb7b71528ed6ea0e209305b75210a4. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/DEHY11901574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529ebc1ed7e000b0ae03751a12864e130b490e8e113bcb62d330597e6ad74e6b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEHY11901575.
Heart Vibes Piano, Vol. 3 - Full Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a3aa972fa7f61badce06c34ceb2b420fa29e8dc6107355b68c4a3832d3c55. 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/DEHY12115226.
Heart Vibes Piano, Vol. 3 - Piano, Strings & Cello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8199b17db4fd98509d1aacb152d5a029cfd7cca177e5a46890dc9386a5871aca. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEHY12115227.
Heart Vibes Piano, Vol. 3 - Orchestral Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fef2609f3fd46cd311f58b578cc2688af37b0f5d32ab8f3c25b50c1d75f50c0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEHY12115228.
Healthful Spa & Wellness, Vol.1 (Temple Bells & Ocean Waves)
Healthy Music, Collection 1 (Guitar, Piano, Cello, Oboe, Strings)
Zen Spirit Collection - Bamboo Flute Shakuhachi, Temple Bells & Nature Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14db07fcf4aea5b4f0391432a0f9e4e2456131903d121f037af7e6bb641a2bf1. 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/DEHY12400009.
Healthful Energy & Sound, Vol. 2 - Bamboo Flute, Temple Bells & Nature Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de017d75e7f02833258c97dce2a8a95372c527c12f7bfb9c6051c4477abd783. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEHY12400461.
Healthy Music Collection 2 (Acoustic Guitar, Bamboo Flute, Cello, Nature Sounds)
Qigong Balance 1 - Intro - Bamboo Flutes, Temple Bells, Erhu & Nature Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde7c0e62aff56fd9137ac61a02056ac39bf6ab72d4d49eba1aab5e38794c039. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DEHY12400920.
Qigong Balance 1 - Reprise - Bamboo Flutes, Temple Bells, Erhu & Nature Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25e6e43f7cd3253d3cec41973d454def5cc3c0e4fba1a65c9d396f59b164be7. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/DEHY12400922.
Tai Chi Balance 1 Intro - Bamboo Flutes, Guzheng, Temple Bells, Erhu & Nature Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fa751bc1f65908dfb5a3f3df22e911766c2a110cfd617ab9421d267caeaee0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEHY12401087.
Sound Sleep & Blissful Dreams 2 - Singing Bowls, Flute, Spherical Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ca4a09c974f8a21dfcf0a8ec6991b71a06607b40ef661881c94894782e2343. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEHY12401382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5dbaf1b4a86bff56c443d24918f4ab6591a5ff92c735fb8d0a82cc9e6f9ff5. 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/USR2M0500018.