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 0xa5a761894772e75f115bb15c61d7158c2b22a75ffe60f892ff6732ee1e3b7665. 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/6c7411e0-28b1-40e0-a844-962a1422bf1c.json and https://artists.proofprofile.net/proofs/artist/6c7411e0-28b1-40e0-a844-962a1422bf1c.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 0xa6dd8572326e329379204894cb9358bbfcc93210b27f87181946c9b97a7b5040. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZK6L2264381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1971adf6b61b5e9fc87b55ac44248ed7536496b0089281c656a3f886405cc3. 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/QZK6L2264382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f93c288759c0cee52d1798c8b625ec393329f25cc74d8072c8b26934c8978f. 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/QZK6L2264383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61f55d0e9385aa477db64cf00c7d3397bb37e3c0a08e56616f92d90b7a49a39. 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/QZK6L2264384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c65d2236ec7adbcd4ac349415cc6eeaac8b27ace330aefb69bced8c6e011ac. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZK6L2264385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1543f63d6429261bfee2e18902d92e95c9fe6394afb2755feb4ccb61c5ec86c2. 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/QZK6L2264386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc1a8558d1124e4b29c46e1cb4a66fecba254c798ef1e25ebb47858daeee61. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZK6L2264387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cff78c770b13e721a03e96a3faaf74dc211f3e608166d14910321063265e9d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZK6L2264388.
Ralsei vs. Himiko Yumeno - Scrapped Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa08f34d50a70ebf1c07e9bf2b6fca10baad023fa6029c899f5a2a41197e886c. 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/QZK6L2264389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2840858f7a70a05b782c15e88670cf76af7c86cbaef28c2b3c0ec07f1c9fe9c0. 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/QZMEN2296710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edf9547cd40ded852a014a4d468f140b33239375312782f276417ab87a48816. 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/QZTAU2298497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d283672b213be82b0ae4d49b575a09ff53b3dcc7f68216b3be17bdacd4c1794. 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/QZHN62396115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743eeb447cc3089a60c5a478ddaaea179329bf8599846b95c12ba50191740aea. 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/QZTAX2385553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4feccc5cb0b6eaebe7e06e670a791d84b2a2fcad96a981061000798b16af50b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZTBC2399737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad14d36a9ebc9882c8987ac771429ad300f83aeacd09561beb04f95cd1503c9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHN82457576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5623b938ad929f12c879af5c1336af584327e1b0b1ef04ebbee666c29dae6634. 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/QZMEN2413545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9306c7d5821d670e4199d9ac9168f796ae4687543970821a9fc31490d1890a7b. 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/QZNWS2433187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd356e03e9cfcef4a2984f3858350d76d639301472457f172aea8786813cdf638. 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/QZNWW2439437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e872a0e1919ccd9889c6c3471ad8a00ea8f33cff9c99fbefc054b00fb32132. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZPLS2402652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf712496017bcb61afe2a0d5baf3bd3d3a030c8a4bd6498e6dc445d698b1c7a8e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFW2466402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a66513adba4d7b7887c495ed858b2e555ebb1442dfd863c02a0b517c0b98578. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZZ7N2400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57bf4d10feb6c73c649366c36dce86c3c12855d7ecc28f292e21b17a0a4ce7. 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/QZTB22554812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d7310c84617b9057320527e05618e2592a7df74c5f83e8ad4cd8bf4475828f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMEQ2242702.