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 0x1ba708410141ac9cfa3de45de53336a36ba08d63ff9599eff1e9c693b1ef68e0. 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/1e710459-17bd-4f26-828f-f7ff0e6abf71.json and https://artists.proofprofile.net/proofs/artist/1e710459-17bd-4f26-828f-f7ff0e6abf71.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 0x1a6e4222dfe9e3e22678684a0a77af1de19e82fe7867ca1bf3d659ae1d1db7d1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA052449601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d3893410abbcd61611c1b042449142e326fded90b288b6d3d868e959f8e56. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:49Z), 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/DGA062475183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057ed1ae4e060c81b3dad9318ab22009d8e32aafa4a2481a9648cb885377369d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:04:07Z), 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/DGA072424773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd39d1d51c899a215b7f0965c95ea1c96d84ea4437b00853cf99babd053dcc6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:12:45Z), 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/DGA072424769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3801f53167807526bc0b849a9e29b409d5723917e53461d8e0e9469ad88bc4c7. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/DGA072484623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de268f3c23b83d3e48c46f0f0074e224d36029f20df802c10d38e6d8a17b766. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:13Z), 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/DGA082408640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9008b10c1a13f77ecb15233322cec457a0526cfe83d98f23d5fa646e86ebdf3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:52Z), 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/DGA082462881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb243824deea125831fe0e5d51c73428333dfe87b81d4a332e2d448d239b26. 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/DGA082462880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff9782f2ae43370e5ff80f3a429e572125b776106f3f195a9a1dc91cee08bb8. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/DGA092406823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8611097c13a1766ae051122054f910fe22a54dfc2006bc60c62ffe589cc696f3. 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/DGA0M2406317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a2b221d66f8d693ae61a282dc9f8831198d5050918dd75142008ec062118d8. 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/DGA0L2491255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1020e2ff2a9c78579f89b7f1163fb3a0dc9a6b81c11b74e3fe28b9c9c5e5be. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA0Q2430534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bcc72eb5f17ed8a57c18ef8b7a1738a439a4ecaed75e5b23915fe4ebc9d67a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA0R2414122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372ec2ced8d0f6217229b84e46c6b6c6ffe7f496222212a7b7e6e1c33a8e5e46. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DGA0T2452654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1136dace876c63cc5c4f43f9e558b6cf61079ea7c27e156e54f2d63790906c8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR10S2537756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10379c20dadf286430c846f5650f7869f17dbb229ae8712dabbfa06c2b40f4b7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:48Z), 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/FR10S2587912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f6ce3603e2f5612be6631c69c3df1c58a7f3e5d711280b8808efe3b3a21e6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X42525664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a27741a0f676cdf00b5e552d8a5c0522011166eda2f0c7039fe413239a5eb6b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR2X42565996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225023bf50d8bfec7ac9105f78b67680417d8d067263fcda1d7648ed747bddd3. 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/FR59R2531717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236490f013f82a4172766e134a2a2b6b45adccc0336a098bc3f7081774f808b3. 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/FR59R2599006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370a10be903891f860df1c63d83c99185674da5aa8733ef3c74c864c1431d486. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:36Z), 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/FR96X2573684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39b22e9c482d6ab97725b598b30c74b7fba804aedf822987d2b022a3a46394. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:19Z), 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/FRX282588771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123ba375708c91f601e5c729043dc900b89213943b369ea7963259c4d93883c5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX452591507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a2644c62b51c86d7c34fc2ad3e2e2fee2bf9c3ae568db8e79bf760956c7be. 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/FRX762526112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7239dcee7e6bbe3f4698c1de9c8cb75af1564b673fa21631209417486af2db. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX872572690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4dea318b5757be11908851849e1578246a041fec874eec0047caec73a3637d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA052558430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84fad379ea794578d619e867f816cd32a28135ba4676b53234c97ff9bae210d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA062504460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f50d9011045cad8b41ba70ab1ff30033e202470853bf0780ba6a28c5e2b23a. 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/DGA062544596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23d97a3141d17b01b414761733f99c702a069bc4a48f75e4e2f88e93c83d4b1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DGA062583401.