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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270276090658736bdd638553fac7a803fde15812c73db550c3ff880c49aaab1a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dee82dd-b941-477d-b1c0-17ec48cfad55.json and https://artists.proofprofile.net/proofs/artist/6dee82dd-b941-477d-b1c0-17ec48cfad55.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2b06663ee3142f2235e842e79432ef8d7bb926485639f17e9a5b0cf3fc9267. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2280773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743e7e4273a2fd7a240e27d82347021134881f83f6962e2f101231869cc7f20. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RUA1D2278646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee121e37fd1f32920294efdc80f637c88e18a04d8e9c56c3e4e44ad7d066b305. 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/RUA1D2278648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0af7e09c92ac4a4b6cbc7816d77be185c0c275ae68d147a00cb12fa8ecac24. 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/RUA1D2278652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd27590f7ab6df0f9be605e3f9fd0bbb59c74414c85f94a1575fcf310732dcd. 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/RUA1D2278653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae36a6eeaa468689218f5e1f03c43a06f4ba15eff8cb87a1158a8e601e9aeba. 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/RUA1D2278655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb81e7df88c2f0ea960c539010569963610175fe4b8496644b2bcaf041f875f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA1D2278657.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2997ce204c2c10e526809d82a9e81050454deff73b615f68574f058e4a549d. 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/RUA1D2279410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5112a6fd54cc149c473e2f7ff0db322672509877cd48ff51af56cfeef2e275. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/RUA1D2279415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea65f8e6b234cf618bf5d1bf19495af7c221697b5b844f00b0784185b4b15427. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUA1D2279419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124d6a93f9762c0b144332ebb3389e06d31364867df859a30e71167064db31cc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUA1D2279420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b075cecd6878a4632d404502e14894a03dc02241c856442b63347732cf5256. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/RUA1D2278625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc701e51520a98cf40297d7f95990e1f7f119963297b4bb433247a4da59c8e247. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2278626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf337f880dfc15518ede800b0eebc83bf435e380d5a2ddd86cd24f451bd14153. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUA1D2281855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e01ce82d78913bdbe459cc827cd5b10089473f0354698edc350ba39f9ff1774. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/RUA1D2279394.