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 0xff2535930ff06d9eba79da45a0578cdf56db1f7e296f74bb182525242dfcfcff. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63096693-78f2-491f-b7b8-942a51371c96.json and https://artists.proofprofile.net/proofs/artist/63096693-78f2-491f-b7b8-942a51371c96.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 0x09ab59621b5359f8a175c66f593c51bef4d3c75a7bbdaaf13b8404ccf922083d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA22380063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21560df560f5316e919bc24fcc2d4b2a185cf8b142e6cd118b3bb3204f6b033d. 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/GBLFP2492656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c0b9d7f0f7b5b55ffc0b621ed01e383a4b4f6ff99e7d4c0f7f4f9e65486ebf. 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/GX3Q92443370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd48669295ef09265171edaf076ca98fcf7e825ef664c3a4ac489a79c82cc9b5. 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/UKXN22447115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f42dfb84b27b7d7e39399823d16fcd65ce739fe534e9445840489901c023f6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA22380061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe619170d9ff5e2435cef87472ec3c85154b2f2e4d1aefe3a854905c1ee7d640d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA22406781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333393b1082f84689c08ac7033cc167729a1362db21d4ee065f1e8c764aefc2a. 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/GBMA22457299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd715fff816eef30432efa709386fb604f03faaff6845e6aae16604d4a9cf6846. 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/GBMA22380060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f8a411f64c6c5eeeb17d23f7dc31cdb2d0a09b65803af9e1ab73191587af92. 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/GBMA22380059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1e7743b984b26fca841c5995ecee2d0571032080d4bbd788478bbe9bc80df. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA22380062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333393b1082f84689c08ac7033cc167729a1362db21d4ee065f1e8c764aefc2a. 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/GBMA22457299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe619170d9ff5e2435cef87472ec3c85154b2f2e4d1aefe3a854905c1ee7d640d. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBMA22406781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd48669295ef09265171edaf076ca98fcf7e825ef664c3a4ac489a79c82cc9b5. 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/UKXN22447115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c0b9d7f0f7b5b55ffc0b621ed01e383a4b4f6ff99e7d4c0f7f4f9e65486ebf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX3Q92443370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21560df560f5316e919bc24fcc2d4b2a185cf8b142e6cd118b3bb3204f6b033d. 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/GBLFP2492656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf128ce36901f12ed77717a318499a6e8d7f8e0cd06266eae1312348277adb89a. 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/QM6P42131507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec511e979e9807a9ca5ac2a2bc44acae48d40e9b692b5e8e7a589a542b0eb1e5. 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/QM4TW2177832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7319b59593d6d5756e4b6c5c24aea3a18066742395f5555b96cbac0708c279cb. 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/QMFME2008232.