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 0x499c720bbfaeadffa67015419fbb6f733a2f30580e5915a5ca9acf49e04b000c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebf9989b-52b8-427e-be82-7f3a17cfb171.json and https://artists.proofprofile.net/proofs/artist/ebf9989b-52b8-427e-be82-7f3a17cfb171.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ブロッコリーアイスクリームはすき? ＆ いろいろキッズソング
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 0x7224151a1859c385807567bcce784de3d09ac926ad50974ac8fe50765ce52eb0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:55:30Z), 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/TCADY1802390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa669d082275fa9dac2994290a74cb0473a50050093184fdc333f37c376da6a67. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:47:43Z), 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/TCADY1802397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3d462d77bab7a9027224cef84faaf9beea2fec716e08a8a71fb2a98b07a577. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCADY1802410.
きらきらぼし ＆ いろいろキッズソング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51647b04583adc67a6876990b5fc846a10f354351c267d9f6ab65e3c000c469. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCADY1802054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb864323f8bc520ad00c46748fca3f1d747de81d3326fa83e16107d9511639102. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCADY1802056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c5d2a9bee11e66ed7209402436581e25112f9b1c859d7b892a1bcb4c0a1318. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCADY1802069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95045e2d97326ff5d8a19c9f00a5601acab68faa2e5cad3f7798e8690261ff4. 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/TCADY1802088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734681ebb813cd05a66d55fb4abf5ece0af5812d28ff29377965b87124ba7b88. 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/TCADY1802089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b24dbac8322835aec6fad3928897729f9871aca3f2a289c18455cda6c3ee896. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCADY1802120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63d00084cfb5c2301ab03508dae1cdae946e445efe1c30cb582fbcb359e3941. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCADY1802124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c9c7da1f7969ab506f392bb52fa10edc49913389194dd1ff479073e6cb55b. 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/TCADY1802128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184ec19b6c5f9b770c1f6ce671a5b7bb5a9d9d05543680b1c229158b586e27bd. 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/TCADY1802143.
おふろのはいりかた ＆ いろいろキッズソング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba27ec9369536828360d6c256e7147c51befffb398a3abea3df24d53540d4636. 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/TCADY1802171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae4d2b91844c052eeb886744572d82546d5421d1eea068d55905dfc51adaa24. 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/TCADY1802173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdfe9c8b08efd6b44de099431e8e5ac76b2bbcbcc1535ec4ff51a3e7a2c29a6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCADY1802186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617a3aa47c87e7606564fbc30a87ca3bf9e5fb01a3d749cff604200b297cad0f. 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/TCADY1802188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dffc6a2bf0b2a02dc3cbdda818c46dbcf1433fa7ed1b9be31fd1d288a266f2b. 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/TCADY1802305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612f13ac10975b6a0c0b969bd21814f80a4d7cfe2c5bd2d5670d131e8646970. 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/TCADY1802311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684c066b1f137fb720bb9b5b2bf29f0c1f8fde9fef92c2873613e5d48ef7f7c7. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:59Z), 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/TCADY1802313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b5fe4874975eebb5becdb58ed34c8dc00ca52b103e6e0c5f785e6d90aa59bb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCADY1802314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea4023ae2a4261acf6aff403c1173479f17bc6072dc0a18cce16cabf9940c54. 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/TCADY1802316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515cacf5a34a1f17bd1c22e56406eabea978d376d26257fcbb997a34dfe6802e. 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/TCADY1802328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2766ab0bda3c0a82abcff9460f5dc972f92a7ec8cc2a70a8d6dcd9221df9d821. 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/TCADY1802329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34168ffe194fde286b41aad9ab0d2aec16faf524b47758867b78b99f9985f3f7. 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/TCADY1802489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96b29698dee160c4e90b477019af8ab0463e1672a8474a19d6775bc4f637a1c. 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/TCADY1802499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf07712de6319583d607ea7cd92f46a142c5d957082f7c4e873d7f422e57d16. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADY1802509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbb7497840ce72dad08f4ffca7356e64997ff7941924a171b7062773a5db4c5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCADY1802526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d9686ab27df20ab52064809bef225fd369d7fdd3344f3916cdbf5dded7b07b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCADY1802539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5c2420f87ce4b66434219cfa4ea9eaad083fb03ef27366c2468cf82b078dcb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCADY1802554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431f75e886a09a7e70364aecaf42a600ed19c2715cd6afba22acad077b061add. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCADY1802574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41420d687b0ae430c9ea5e2b210aa48688ba58597d0e0567ad302ea16993647d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCADY1806295.