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 0xd29339b829bc089c70a6f3b67e8ba2ff0315504564621899697d784905e0b0be. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7597d014-3538-4ed7-b3ff-e5e4c2edfaf7.json and https://artists.proofprofile.net/proofs/artist/7597d014-3538-4ed7-b3ff-e5e4c2edfaf7.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 0xc80f45d7246936b5df7bb91a38f64b249b1b8f1e52cb8749529420bc3b295423. 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/QZHN82453839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95283add97c5eb6e2363c3898d0f05d6b85b162c9e726ec6e1280fa5e280d970. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CBEFB2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1573ab88d83f2242075b8f91dfdcc38208a17db1e41cb8fb9cf2672e041c7784. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QT3F32495662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ec0af50ffc69cc2243c348786b923d11d6cb7a93198d83d27a244c0bd54057. 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/QZK6J2528890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f27f3b29bed11c0376eab323f50d093e49337506814a5cef482a0bcb46748e. 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/QZNWV2553628.
Max O’Million Extraordinarious’ Super Symposium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11052e404e1cb15e523f09c5867866bee67acee8eaa1dc94ed19fe89fb62e63. 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/QZRP52539204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b80d5dc056932c2e6d7cc7c3ec4ca4bd462e7b5e0e8000eaf42d1359e754439. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZRP52539205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a071eb0be8f2363d86c6f8494de1cc558a9d83b00c84180bdf70eaae42eb72b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZRP52539206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c2f92654d74572bfb20fd45d6666bff2b4ac4805c7f7f835d8358dece2cd25. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZRP52539207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892d1d0bb72d88cf8f71023048f4a5122de350ca917fd2fed848d2aea3ce9216. 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/QZRP52539208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50726516a2a125060d4d532be318431c20eff440f77359cbb2866b39ec58532f. 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/QZRP52539209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfa7ac11ce67857793c2524a3e7ed46dfb5cb3278e9fde07dd4b95b6ef288a0. 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/QZRP52539210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8635e1174255b1c4d95791bbe860a768e288ffd504948803f71d2720cb4248fc. 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/QZRP52539211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bdb5926b83d9c8e99f55b99d3a3b57de04fca9594f6ed7419c00eabd088634. 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/QZRP52539212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec68b49e0c55a2a219033e96adde4497398f5ccd1cc985e08d2c256435e4034f. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZRP52539214.