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 0xedcc9f583f026c7e8c5c0ac44c4f9e3a9aa1c9f0f43a8b9bea9a78b37993e8d6. 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/9a4cfebe-1438-4cfb-9554-b958bc4eccbb.json and https://artists.proofprofile.net/proofs/artist/9a4cfebe-1438-4cfb-9554-b958bc4eccbb.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 0x68ac4f33924f48021c7572d74ab6a383b56eb6fa52230d89391363bad8aabafb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ2192115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18899f02e3e53e447b12878dc0451a11e8218bfa84487bbf451951217cb2b77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6MZ2192274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919da48a271ca02ad20c4a55698c842b4ca8903217cbbec11cd8b2620f1d4c30. 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/QMBZ92308356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065a388485bd8e16ed81b05dd24325603dde5cdf821b7472a0f15c2260b75f29. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/QMBZ92308365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6086d779c36c9d8419e8048fb3b0fa08b99e4726789b4dd5529ffb8a041724b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QMBZ92308367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f856a631b3f057ed76c8242bf36e0d2e0e19422dece3c234e72480b2c706c2. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QMBZ92316963.
Tirando H (feat. Yoga Fire, Dee, Cozy Cuz & Kamaro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac4f33924f48021c7572d74ab6a383b56eb6fa52230d89391363bad8aabafb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2192115.
Así No Más (feat. Nark, Dee, Cozy Cuz, Muelas De Gallo, Seven, Yoga Fire, Kamaro & Akasha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18899f02e3e53e447b12878dc0451a11e8218bfa84487bbf451951217cb2b77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2192274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d024b96c91ab805197bc2d39d8267fe4fb053a200384be5340e24d4f251f9fd. 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/QMBZ92125883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dc36bd08b0b914cbf0c8ea766a8deb3b31d2b3768ede2c748db19f3a51e3a5. 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/QM6N22252148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5379b3576725e3eeb0ab0358ea9e5aabf825b645c4a27e877e6713e3a0147787. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22219503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf326240cb0a19f187eae2ad854a3aee016f0c81d1d37ce348d4c25ed4484b1e4. 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/QM6N22252150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76467ae3404186e94784c58e7415cdcf19cf20ab2508af311d4ed63e0bc198e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22252151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711f20189be015edb6a3d0d83faafefbc5007d5719aa205a6d20ad0f8ccbbaf4. 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/QM6N22252152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168878d9c3d33f07e72d5ea69a8652e4cab325c18879a8c86efad56471186ac1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22252153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a3558759035330131c522df8c313df53e40307aa7ff9d21da7b8edb6c78c3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22252154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec7858345a9343904c9f97594ad13d39765540717576aa6c9e8d0bd81ae80bc. 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/QM6N22252155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bafddcfcf0ca1a697a5164999646e7dac67056e215e4c43c5e8f701c970898. 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/QM6N22252156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2575b945eddd297eef4ff3745e513d074c6776d9b0e6ab78ccb4cd39c6ef9a18. 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/QM6N22252157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2f6d9e096b321716e545db4fb5526df2b621ef30deb354424c3dbc5050c086. 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/QM6N22252158.