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 0xcc2f01f505b8eb9635c7889b8461214d71184829560ee1bffa58b00dedc44a98. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/775e4ca3-ce5d-4b62-a45c-1e11535ea257.json and https://artists.proofprofile.net/proofs/artist/775e4ca3-ce5d-4b62-a45c-1e11535ea257.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 0x70042786f39e38f41cbcc813200764e3b2c15f2d11470b76ab724fbb9715bde7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXM32000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb9860568dbd257118e30e59c605f4015678f55f8f2aa37778802d8f34a11e3. 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/NL8RL2503065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4942cad8bbaaf59819d795a7bc681fce5384294abcabdbf02b60b7dd6e8c82. 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/NL8RL2462923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb9860568dbd257118e30e59c605f4015678f55f8f2aa37778802d8f34a11e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL8RL2503065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637ed8b5c70afb989325d4f0ca188101327e98902c5d3bee7797647aa9a6048e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRIDO2416766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f21608013a4e6515fb09b493fe29cd0c5a7493a311033a7414cc5a508f048e4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRIDO2414609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad21bbfa1d2c8c3b17556081ccea3d05290a08e5a2ef90329cf51187f9ba79. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRIDO2413081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00392a026c10ef6ed19d2c26940e91d9f864781586e26528db409938914b4e7c. 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/NL8RL2508550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4942cad8bbaaf59819d795a7bc681fce5384294abcabdbf02b60b7dd6e8c82. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2462923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb9860568dbd257118e30e59c605f4015678f55f8f2aa37778802d8f34a11e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2503065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f21608013a4e6515fb09b493fe29cd0c5a7493a311033a7414cc5a508f048e4. 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/FRIDO2414609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca469c25e88c5fec1102512fbdecaed5c57d68b08d7ca37d3ab03afa20341de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRIDO2414536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad21bbfa1d2c8c3b17556081ccea3d05290a08e5a2ef90329cf51187f9ba79. 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/FRIDO2413081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f21608013a4e6515fb09b493fe29cd0c5a7493a311033a7414cc5a508f048e4. 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/FRIDO2414609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ad21bbfa1d2c8c3b17556081ccea3d05290a08e5a2ef90329cf51187f9ba79. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRIDO2413081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf186e3a7734971d4fbe7560b37131d30172bc6d2980495eb3f945beea0b27c5. 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/NL8RL2508691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00392a026c10ef6ed19d2c26940e91d9f864781586e26528db409938914b4e7c. 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/NL8RL2508550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20133341c08904ad1835053dac82fc3403289a8f2c3727238601e996670822fe. 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/NL8RL2508692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd374bb2fb2d441f29e7deb3e58822ae092fa5238c50c831e538bf144e08faf0d. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/NL8RL2508693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae70e32eba45e8458365c52d906b052b381cd58d091c50c671e5bde3c73c02. 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/NL8RL2508695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d41cf2531e3e7fc68033a003c2d597753e01552a51cba058901c1a6a091da98. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRIDO2411946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8fad5595730890cf1cfbc44120482f03a51e70e843bef233e60de08c61c05d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRIDO2411945.