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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 0xc944ac272794c1ef9397f0890d8cd220b19b3ba88afbeb3632a66f39dc3fe887. 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/0abbc88c-9e93-4536-a0fe-808e53abb85b.json and https://artists.proofprofile.net/proofs/artist/0abbc88c-9e93-4536-a0fe-808e53abb85b.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 0xc17442edefa8247cbb003a6cbf8dc44a56e8d0ea5ed90fb211e0c3455762fc37. 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/TCAIE2410032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3ef20886248b5e9bd09c3bdbe9582241392466e2df7db3a807b7a766d4e68d. 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/TCAID2410038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a7dd88c8750d876e62f094bf65ff7104263d79f9ca1c5922af97cfc2628018. 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/TCAID2410040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7cf6a7a83ed718deb0775dd8f2a2daf3625cd116f18226aafefd8e82086756. 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/TCAID2410048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bfd05afe77a08ab204c416b3f976df63c360947075be6404a2ccd6741d13ce. 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/TCAID2410053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dd56f1ccad61b3e29ea4219214fb6a2f03243390670e28d9b841ea9f479691. 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/TCAID2410077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60da0ea463c61ce5fe9bf2c949643aeeb4d97973f4fa2366f527fd3576f3c70. 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/TCAID2410087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bc2d389f1db9e9cac3469b82d6fb4eb66d572b0105c6676ce8bd97663c7326. 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/TCAID2410091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bb23969ae33ad84f9b7830e704fa2df015cb4ec5933f2bacc0ef9bb9840308. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/TCAID2410099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44fa59b62db295c4d40bf60e294fd0bdf63a6eb6959bb3643528db8360dabfe. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/TCAID2410132.
A Timeless Princess (The Queen Stood Down in Order for All to Stand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253d700286ac92d2ae23645cb43d4566aa0d46dc548b123d65ccbe586d2f4655. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCAEF1958422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c36b87d3911ca091ff16af806efa27bb3cf36c630086a955b2e932b24161df. 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/TCAEF1986451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d671e63ce6c0fd5f5fbf91d572fa55cddb206c6ef3178c9684718bffa1ad985. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCAED1960286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89c6fede7d1f1a96b86dd11d733c3cff60bfa1410cf1bdd69d1ad5db5dc3fbd. 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/TCAED1960384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf828cd78f4b7ff2348281dda808446854169cb714b9a32407da4403b5699dbab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWU30300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d01ca7cc265bb11621d237746f262052fb787bf6752a81dff220b7151bb64c. 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/USWU30300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bddb57e9b98c606acd9682d4584860e2f111086f2f8a6f2cd5215fc58b6efb5. 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/USWU30300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7fdc3cc85bd7a3b2369050567a81ea90d9789144a334751c338091b12a0b9a. 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/USWU30300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4101f841e2f5e8ac7ed15b114b259b3c76051ab837d7871faf21c3dcdb468f96. 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/USWU30300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf385b284a64a8a0a5a8c8ed6ee1f1933dc2764a4ac9f632f82168629cd772734. 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/USWU30300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e2e513715a5670306e47f7ff077fac712b70a05b9eae9ed410984e1448e0b1. 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/USWU30300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1358d7d97877014c6af743dad3c66a90cea435f21c3ddb5006c660113d422efe. 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/USWU30300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0eb54fc0ae6fcdde8fdf29c67f8103087d37523a88f1701d68a1b9240b08d4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USWU30300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1d96970a82dbcdd219fb76af6e9e2c4ea9c8026fec42fe024fdabc5520d809. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWU30300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ea7838c29174d7f45eff71a45a1211b702d5f1fed0bbe6a75bc242d384db66. 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/USWU30300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc92e1d654f7c2effe48067f6d68d72e8a673809868999e5383f7de7cbecba. 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/USWU30300105.