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 0x0bd74cdeccf866eb459e595c20c8a3c6fb0954cde60a18244e4aa3db661f38d5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce268b30-3018-4c47-af76-85ee63283cdf.json and https://artists.proofprofile.net/proofs/artist/ce268b30-3018-4c47-af76-85ee63283cdf.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 0xc3ae662323b53f7a241376233733e47bc67139a7ad5fe954c171d0b3718c9a88. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBSMU9863467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cface8946e650df27c06d4886426dde6cc5f08d8be8d2d622b401fb544c83e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GX3HH2179941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de12e330474a5c3980b50252fe5b8def558999001bd3ebe99f4fbbd578f7315. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBSMU0077557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d18b023c146eeb328bbb543280a901568a5432f93d1c1a1ee698d735b366e8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:53:20Z), 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/GX3HH2228345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafe33060b71711953afcd75fba9eaf2b1850b7002b9041ed836b46414539b11. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX4R52296382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a856b26d8a854fa16412b38ea0353c508d36c93356b16d966d293315126e96. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:00Z), 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/GX8KD2203773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84400ead673dc0fa5e67a9f830771613e2d10bfb94847285041eec8e72ca72be. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LE2248893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c2242c082ec9208d16a72209a529f71156029aa06fb84edd6bdf13d9ad3f98. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN42487645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f74ff9e889e2bcbc9bd9cf3aff33baa475c66bf63c60c7fc07f81ca5880037. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:34:33Z), 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/QZMEP2419348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe28f744c9ae4dcfaa4fd47a7152adb3b1bab3d745755415eb3bd49c1ad2222. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWW2474124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a52bc497d8a441312c915a432bb84220dbfe1f7d24bcde973a03086bbf13bb7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:46Z), 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/QZTAY2402674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90a1f428aa901bf22081e63bf2f302d87dfd37dfd9130ba2925c77212c5f372. 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/QZTBF2403328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ff2be3eaef8e0ab934e102155699100e53ad2e70150d1eaa1783a434779608. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:17Z), 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/QZZ762405656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce2af472217d56d8e7f615604f386ec8ba6641ab75471eaf06cdf49cb83f39a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA0R2474189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e47bf016b4c643626c66eadb748af09081c3d1a6d0e508a73dbcdd951da23b6. 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/QZZ7U2441015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edd903193c4421e5195fdbd595fcda447411fd4651800114e427f8a89550bb7. 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/QT3EZ2488519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63562c5e91e9d870e1a9fce4401bdfed63317f7718dfc01924ce8d0ebbd23fba. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA82504593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33529ba5cfc3553d8a195805aeb0e5677e32baffd5aeac154c0b73aeeeee7fc7. 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/QZHN42589474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60d2c663a1e97a89738ce555043381e6632be1a2c4187dc5c6187c2293cea37. 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/QZHN62502060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beb882655783f3dcb314d88a60e2cdd894f6f13235528b4118d8546347c031e. 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/QZK6P2596796.