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 0xe90b831b51b5d81b9d64767bac6bc6ee06657f690a6447369c41b0bb1238aaf0. 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/7842daf9-39a0-4989-b07a-b1b068c52e6c.json and https://artists.proofprofile.net/proofs/artist/7842daf9-39a0-4989-b07a-b1b068c52e6c.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 0x6f63e5b2457eab9c09b69b64fbe305eb1faf2ee7dde2286c770d6b58e06d9336. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USTC00964070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895e1a87cc26f8b8ac3440d5f85cfe46f0b63ddb5e396508a89228e7d011fa83. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USTC00964132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e493a2acc1ec6d2d34ade48b9b2a6e972300f8f633abf7d902f8876908ec6ea. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMEU31407309.
ウッド・アンド・ワイヤー～超絶異次弦楽～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795c05941a53f7ddbf756dde9e93300f05e4f8da5e2d26d30f8634e7cb154da4. 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/QMEU31900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618a169cc1b590d46bb410a76b387b9a3804be6cd88bb534be03387320a09e34. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMEU32315878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8c45ffa596db1f5f1d45c1f693ac009a125a43a4a9379da8a05053d9d562e9. 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/QMEU32315879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c287ba3b95953e445c98b54434c06d76fe8dff36f9c503a1d161810430e7ad. 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/QMEU32315880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c606046334c99611191277efc70c742fd38ea7e6b5823e08d7035e2cc429b7. 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/QMEU32315881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dd2fc7a511bd0e718e1ca097193f76db5f2cc6c30e6c1864608c7e19ae9222. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:41:04Z), 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/QMEU32315882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518631eefced8e6247c44616218744917943a01a883b28e13e3d22e6b5e720c3. 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/QMEU32315883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c809e912976b4ef6c19489efdb0ebc1f943f6ddfd72597f0a134cc45c8011a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMEU32315884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf712e7bd7b8d6aac0718f6c03637eb5abb62e61aab35b9cfc75fa03bdbd100d. 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/QMEU32315885.