911, 9/11 or Nine Eleven may refer to: Dates AD 911 911 BC September 11 (9/11 in the month/day date format) The 2001 September 11 attacks on the United States by al-Qaeda, commonly referred to a
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 0xe8fc3b90305d01382e28ed941281dab4d4492dd97abbb11c57b1608d9a68f2f1. 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/2673bf5a-5218-4e1c-80b5-baac9d374c41.json and https://artists.proofprofile.net/proofs/artist/2673bf5a-5218-4e1c-80b5-baac9d374c41.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 0x26108b032f873db45d8c218eb8d9cf238b3a73e2ed308e24945242ae6c851d38. 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/UK49M1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ce5dab77a269e1ba9033279e67fe2db80aedd74ec7ce5c2e88b8c27a94a5be. 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/UK49M1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e1b5d0391b7bd853d324db4972ecd36f4b00182246c9dadba1b820175478b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UK49M1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4bb1c4749852e754b07bdf78535b5842f6d67790ff1c5bf3225d611a70e5da. 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/GBAAA9821016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfee2af23cf55f431db9e3713cdb753626f4979e4ac93be31b4eae1343a7cde4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAAA9820759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48574d1803a69759d74c0e166a802641fa9020875c50655135a5952702667f2. 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/GBAAA9800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148e00913cf808d7b1627105d7fd64800cdcb4436cfb2c4270505ea40ce226c6. 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/GBAAA9800914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d7e474f9c5eaf01c943cdab14500507fd00789747d2b8aa718eb444080b773. 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/GBAAA9710358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447b1af21b476aeabda32f7da5cf3bb3a64d5410e942d85a8bcaed768cffde31. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAAA9710359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c43aecfc41cfe5039b0a4770a20e2cb44574d3eab9e0c180225ccd2d60c82c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAAA9710678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4b6a485a621709172d78448d24807b7bd1a8edb7607b85f65bd96c004ca812. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAAA9710663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e6c74ba110753f74217564288265f99d4bd753cf3afd9aa1203fceccac7b23. 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/GBAAA9710364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03e6f9f9a22e6e8af15791feac0b0b5c91d4db77bd3c3abad6e101ca92832ee. 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/GBAAA9700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0bd578d52b9d82c33eeb4ab39dca8194e98eabef41551af681fb84465be1f1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/VNA0R2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66ca8bc8df8f2323424e274ff789514e08bec3a028b980d30283fb7a59d0fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0R2300009.