MCE may refer to: Science and technology Maximum considered earthquake or maximum considered event, maximum credible earthquake Magnetocaloric effect Mass call event, when an event causes an extre
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882debb2e09acc9df818ea7b83c77df40d0052f0ed07d3b1b1f6ee8b5d1dda34. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfe48e39-b783-4a82-b6a2-8b47995fb3a1.json and https://artists.proofprofile.net/proofs/artist/bfe48e39-b783-4a82-b6a2-8b47995fb3a1.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b224bcade8478702cd273967bf2d92554704d9989140d184ddb2cafdd39054. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:16Z), 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/DEZC62252693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac72463bbd79e2efae60c6499468825d3f3d80b49c45d3b85ec9bf3019533a6. 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/DEZC62257515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e45963019a10f3fdcc8cb711240186b300ffa3e2b8a1b78bb6dc287ec53fa3. 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/DEZC62257516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166ecd14576d605a8b2df63094a96eed9023f65e18decff04947ab4d605459ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62257518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976da484cfd461eb51a685c3b557211b94094c8ff1d865ead0ef972cd07c138d. 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/DEZC62257519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa583644dd47f2fe2d8dcbb1fc85eb6cc7b2bef662036ece972a03c863c398f7c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZC62257523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353bd530a196365addcf726c7e349bce1a31c1164f4bc0c17b8d65c5138c09d7. 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/DEZC62190049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa520ddf264fb3d09f9396f27a763ebd059e534106b52b75e92b883d51a3c456e. 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/DEZC62190052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe297256b2ccb14bd99cb70b78bf1dfc3da2d7726e7debd28ab147541a80d216. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:33:35Z), 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/DELJ82082916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617e478963bf9744f03a7fb2efb641a3a6197b5c0d976b14df44e171e89222b. 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/DELJ82082917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbbf3c966a19b6252479c4f955a2f1bbcc4f057e127188d96b839e17349ae57. 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/DELJ82082918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1cb280972b31fd529c2b5da1c3cbeb37eef3a9163092eb79bc7d7363c52d18. 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/DELJ82082920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7108009d571efa787f61136f53771e56ec7ba4f4eb4a6ef2fe930a8e72b6a. 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/DELJ82082921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c0c417f6a17d3acf09573046b81d5c33329d99b5cbbc0b30119a0bed668dad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DELJ82082923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823f7c5c26a50c6e02184defb01e69fc1ef925367c31968f90aa33912cf3c890. 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/DEZC62455852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08312c8c1821ae0e23204603627ccaffeb829f460623f925d9f4e704cf186e95. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:40:53Z), 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/DEZC62455853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85624f4e4bf62c386501be7f5429b917051ff5f7ed927571bee920d47ea80a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEZC62455854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a801d35f12f34fead618d8157b851fdb2ef74ef02fba2aa2a035b5eed094453. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62455855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d109a54d3b4a2a0a6cdbacfdcf285da997869f0dba2cdc0c13fc26e57bf33e3. 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/DEZC62455856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf89a9fba67237ea084acbebdf326439803e5b1d166f1c6aeeb907589e89d12. 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/DEZC62455857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bf07e9ceab8c3df5ba001f5bc0625fe2ef4992f8f200b4a322d4048f6e0818. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62455397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b7239b89c6c797666f3d32bdf719a9f781279997e166bfb0df22f32d2cad05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62418597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbebc94b09e99dcc6b24381cc23259086c565d06aaab925708aeb0b209215603. 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/DEZC62378909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52850cd980ab477a7a433d152754e248dcf9b1de7ca0fc3b1c237eb59bcb3939. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62328892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8113993d00af6ee7e47c6a263a14db2682f42a3fe27a4ca412a283c7af507ad. 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/DELJ81913714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe50ccd959fcb8f91e173f0ed7dac568d23fa67e68099bd2df28d0260a9108. 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/DELJ81904477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1774e0a0b14c37b3677851b62d05c9a513866fb14365a4179ed197cbe560413. 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/DEZC62463016.