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 0xc30b7267419225f4a0a075bf25871d0bd912e002c9176391c3be45c0b9aeb114. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e58b9a0d-984f-4b66-ad63-8088253beddd.json and https://artists.proofprofile.net/proofs/artist/e58b9a0d-984f-4b66-ad63-8088253beddd.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 0x3b765a6220f1bebd17c8a23cec36fa054ce2cc9d5e951e1dfbe1092e50d6e9b2. 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/QZWFG2567116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17adf2742167de8b0ff89e68b529862919e6ade60a6de3917f1e932b7fdc05c2. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:35:52Z), 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/QZWFE2580043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e376e5700ab1f28052c7640a55c69301851959686b920045b9bd3e28e2b9911. 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/JPW562001059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0273811dfbbe8ab4b8b258302d4a4e3107035ee31b6b7c9533fc7417fddd30. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPW562001054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804f291356680d2a269b2284b9e5bb409f51a60af748427e1469ed5a39bdb4fd. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:44:59Z), 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/JPW562001089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefea21a79844a51985d1f64573b9a5f3ee45d6035e201c30aa9c51dc12aa1b9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPW562001093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4073ca71e2dda6769b1d08d773602301c6e6b82b5ab47c9f1e98f260fcd8691. 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/JPW562001068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe4df5d34472bd4a7803a58c1f41afb0ab9c8c1b43eaf585d66f9ef98f01702. 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/JPW562001072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c5c6e168d37f999a1b5bcaceb70b149cce525cea1962d98b5e338bdb4dee8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPW562001122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31439483ef8106f2bed51b9ad847a6c0a39a521e7faad5c87a5b23029a232dae. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPW562001123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580023b36abba245001280b75648ca3d05274a04a3ce9be737d687d9f6d3c870. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPW562001125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f050c58286477888fff7c24542569a178a024fc2eb42a34f0447417d65028d4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPW562001150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83251af55f80bc85cbbb260d030ea3da4aae66fdf379a9516438b6e5e56f1102. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/JPW562001151.
月の魔法少女感情エグゼキュージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c53fccc07f7c6cc0322825ae253845f073ce6652b67c29e57b68efc9f5c3712. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPW562001102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fafba9271b3761302dad102ad799a4b6e828d893d27aca9d68aa793ef49a01. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:09:10Z), 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/JPW562001216.