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 0xf8ac7b4db830c5c2d7290cb6d89eb64ef5d76b1add4aee33ee7bb197bd993497. 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/75e4e4fd-d387-45c7-9853-d5dd570bdfe2.json and https://artists.proofprofile.net/proofs/artist/75e4e4fd-d387-45c7-9853-d5dd570bdfe2.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 0xf79b9549a4431b5b30d40fb99eb97a835ff344e317a4fe2c8f0d04e0bc075cbb. 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/QZK6F2027504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dac433afeb6aa23923cc607c6cd72d42362fd0f9ffd6afa8cfe157086c6eee. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZMEP2079522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28232ba9f4dc6cbc3a78df053071b9b46a59f139be543b19b5b6e65d294c20ba. 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/QZNWS2076531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a34c94fcdfcac75627d9950d5d31f214c4543a7f8d89506f648b579b1ac5f2. 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/QZPLS2010506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc729bc6a210bd62ae8cdc00d516c547255a37ddadd8b9ce2019ef778438185c1. 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/QZK6H2175171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff71c22322ac80f320a4cc282f728d579cd32ebd910eb99b7e027c1e94ba8e9. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZDA72212404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6c5b3cbcea42f87bacdd3dbd4b58b82e1cb0f966e98d622288f897f5097fcf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZDA82277819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e397a03539d59478178044a156d9f9c2b0fb7b8a571a7a80689e6cf46659c0c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHNA2351415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0385308569e61fa0546693125b08d7e62a749195a030a44ba6b9b1327ec3b. 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/QZFZ62484457.
Box Bout It (Monday Night Mugen S4 Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb17c87c450da7b04dd67e872fb66b330c3f175142b94ec09e97e7733a9aa3bf. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZNWX2491393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05acb1932e7e3502ba0300eb0694c65bbe019587b2a8f9f0cd4cc0e43b6d1e71. 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/QZHN42556570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58a2e8bcea91032bd0c02d2d3a2ad4b9ccce7d969aac79357d47c91d49df1e4. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZK6K2532218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a7bd7c4ae289323611882547debedbd8d0f9dd70295592f9ccdf387a288cca. 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/QZK6F2526147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f22ec16b41e9aafe8644488d56c0aa6884320128f147933c71c6887ea962d3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTBC2509438.