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 0xbfa989a96571d8db9cc5b63785c2f222408ccfd372e5f4aed6129d565d405cc0. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29bf7694-ed05-4a3c-9d69-2e2f202e888d.json and https://artists.proofprofile.net/proofs/artist/29bf7694-ed05-4a3c-9d69-2e2f202e888d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
バイキング行く前におかしたべるなよ - Album ver.
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 0x48f87dba0846d916c330fc2e55c1ca79eea4961b54e6df4e94e9a9a9ff006f5d. 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/JPA962280030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f86f2bb955dc9772d9409222e672f3a1fe852976617b4d0a079e701a0bc429. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPA962280034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860b9f5d39ab736c6c63f3dad3b2f3d776bdd8a343be17ac1b17b4c8db20c057. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPA962280287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dff9151b38e65c9ceece8c81e188ae5be6d08edae4b8021ce042d7c82da1e57. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPA962280288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dfbde043f20b001262a90210d0f738577a7da756c9a6d39558f7dfe7d3c515. 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/JPA962280289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186d5e5a9d672263a3aba9fb6ea9b1b1839774ca55dcedd8454af90de4813751. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPA962400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127704f36250602782e1fa68a9bdbf793e374988e42db8e34d6c8a60e298a43e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPA962400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51e91174120dab70a0043d62c3712f506857b385d0790019a90d214a917f88a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:18Z), 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/JPA962400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6fba0acefe65c7065a17d9ad6a197f3d4a611c05f219fed0a6c89b8d025de1. 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/JPA962400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d1d10b117243565d303bc0f9ab57b6efdccd262e18615f1c4c65e1252c5d2e. 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/JPA962400037.