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 0xd5f42aa457e322e7b72286f99dc101f47d9d7645e29b32c831c50ffc6dbaaedc. 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/34b520b1-9e03-4243-8fe9-2c199faab6f2.json and https://artists.proofprofile.net/proofs/artist/34b520b1-9e03-4243-8fe9-2c199faab6f2.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 0xb5aceb5a6fc748b5a33ef2c1afeea497664a195a57943e666519387905bb8317. 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/JPCO09245730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b73a0934a14036059a16f6900932d7871aa6d9a44ce9b8df4ad9a95e0d8e103. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPCO09209470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68c90288f8dd6b86c32d02023fe81ed2d8606248283722f00fc8c141fde1d0f. 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/JPCO09209500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ea728ea46be4daf5ab0e5dbc5331325fb24b9c5a44fa429e1a5de333eeb9f6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPCO09703190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5e77218f89a21762f2c24fcadb7f5ff0e34ace9a34e5aea92abc7676c3785d. 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/JPCO09903950.
SILVER SPRUCE - The Best of The Collectors Again -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a09b33d72253a7fc6181ee4d943bbc668775377a2ea657e0f0488dccf1f0bc. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/JPCO00045400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a653640fdb6cb6125c88321a2cc752fb7b2cd1ad4ef1b05ab00757fd0ed783. 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/JPCO00227060.
夜明けと未来と未来のカタチ -The Future in the Shade of Dawn-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf67c77b6b51f5c3e9d94858c3f41300dff300168b970d93f1441ceb682e015f. 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/JPCO00615730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396ed50a7e7cd046841555a7f5e3f3689707248b33b1626cfa02e31e783f5f48. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPCO01254320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da7b130bb10f6beea3bad5775258a41747def2bd6f4ec275ed44c84ba6a6edc. 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/JPCO01415040.
言いたいこと 言えないこと 言いそびれたこと
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400b05de70b02f35781c6a49e8ec1614309db6f0168b8947ddaa7320d7fcdd5b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/JPTE01603260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311b4feaceeafd748cd28c4dda93837d42dfa1367415c1c315dfac189ba7e909. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/JPTE01603270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb931a1d7aa352b2ecc5b7c2fd9b7d2e70b249ec2ea5a9b4efbba991765df31. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/JPTE01603290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496a79d79888c0aa529074873baab3c9c9493272c1e971a422dfbf1fb2bd0180. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/JPTE01603360.
ぼくを苦悩させるさまざまな怪物たち（2016 REMIXED RECORDING）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4345b43452d8f358e1e0c26d68926d219becc980bf681e1ab9ade3426d8c1453. 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/JPTE01603460.
PICTURESQUE COLLECTORS LAND 幻想王国のコレクターズ（2016 REMIXED RECORDING）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a1a2f9fe39b20a8abf60cfe646e51781aeb23fbd6fee57e8bd011fe29ce500. 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/JPCO02021770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e3a21613c9dea3e003901a9f52efaa6a55d338ade72f44c4c4f69f7a8602a8. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/JPCO02224920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4e7ba994078a2a525743eae8b56e685e7e9b44f8508842556e4159bed62f36. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPPO01622150.