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 0x0eb38b97afb38d7999186b6b31bde9c9ed828ad33eee1fe62fd02b4d1714a13b. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75e0ebab-b105-4e52-ae84-c34597d3171a.json and https://artists.proofprofile.net/proofs/artist/75e0ebab-b105-4e52-ae84-c34597d3171a.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 0xe8ca33b2eb572839dd3f1e5e0c479f239d79390926f0df7eb0e3f933483d7e2d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPLR2476018.
Possessed Stena (feat. DMR Musiq, DrummeRTee924 & Dot Mega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65ee35825e9e2f04e2d1ce2cab55b4ca7f984b3637294480916644d5de06837. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZZ662444846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077f414513d682754138a8bcf74ea3a11bc8cccf239e707d7d5087a4e0810b05. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZTAZ2438517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec9ce4ae01d384d655e06fb4eb6e3f304b75744df705706e3ae32482b406f4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZYFZ2488820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec9ce4ae01d384d655e06fb4eb6e3f304b75744df705706e3ae32482b406f4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZYFZ2488820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8867267ea6d23ee84a48e28f62e9020a7e5e768994af15a9e4845b6626973a80. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZWV32440638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb134f04e2ec06955d4ee50179e86f09fd9379c88120516af8cfae5a0542ae49b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAZ2469492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f444a0470136730c778c5c624bcbda2c265e2bb7cfc561e474da51aedab8eb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAZ2469493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fbb19888fafb11b2f0d95977d5117901d2d8b0c83a961f868ee8ca92a4b89c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTAZ2469494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e54fb83ae5b257f185d82bb49f454e1ceb5a6aaa7dabba6f40a5760b731cfe. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZTAZ2469495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f23f11fe321534affbf730d59bdf96a27271f8f8e52abdf0b6c6b396c9569b5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZTAZ2469496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ca33b2eb572839dd3f1e5e0c479f239d79390926f0df7eb0e3f933483d7e2d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZPLR2476018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb29ea8944fbd17e53c16eacc0361cc485cf2956c1c4730073c899ba186c680. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QZTAZ2469497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d9e31937bc822c1f6d322bb67f1eeeb08d012703ac837261fccf8838a94a84. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZTAZ2469498.