Center of Attention or Centre of Attention may refer to: Art Music Albums Center of Attention, an album by hip-hop group InI, released as Lost & Found: Hip Hop Underground Soul Classics Songs "
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 0xecf220c7be3355ea40ffccf097f384a08525e01b21ff0f2deaaa0a5b54bddeb4. 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/5cde785b-811a-42cd-a055-5b6350a00f57.json and https://artists.proofprofile.net/proofs/artist/5cde785b-811a-42cd-a055-5b6350a00f57.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 0x3a1e25902fc313b999acf9e7504de7b889ceffc937d30b5ba812282341dbbea0. 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/QZHNB2432986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f38e662464959efa83c86798a0354a079eb73bafdc1d30636571c7bf1346274. 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/QZHNB2432987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2317c597abf7a75453be4eb853f9c621e623271675d26e15904eda9acae2939a. 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/SE5Q52500695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad85179b9be3478e0839a17906854c9adb9d6f8218c58d9f7640017ae0a5ccc. 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/QZDA82265923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d36bde61dc199cb0efbe6d7d6fee9c0b202a1f08b2921cf4c7683e5e5646f0d. 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/QZFYZ2403850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202008636db8350e8ec63a5085aa00820ad365e79ba35fb64889a270fd728e93. 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/QZHN72429052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07acca2707cad7bc139f3ad65060f3dce975727f7c8b6b84e5b35bfcc0d08fc7. 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/QZHN72429054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afc76f5fe38acb842441584619e8fc4f1eb546742a1a6a86d0fe8c2a89a356f. 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/QZHN72429056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c1912643554d9d8753a154ccbb70593dc6eee5ac5af1373b6b3f918cc71dbf. 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/QZHN72429058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f72e3a91bd553ca6eff74b3017b234c90399dda289fe245d8ce1796ffd20c77. 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/QZHN72429060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac51b6c3e941df2f63a7ac5b9ba360eba661d3064b2d97635599baacd98181e8. 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/QZHN72429061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bbca4f5e8d352da721bcd11d1ec8b3845364b9f8c97119138907d3fd8d5aeb. 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/QZTAX2346522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5938864078a3548be90da2dfd35d8e0c3dcb2d0c82411811c8a8427df3e4d8e5. 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/QZTAX2346523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3321455b672c8e87f35ba157200b55ce576d1f758563bd1284d140b904903f. 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/QZTAX2346524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd031decd989bc7b358d50e0002a47c7702025c3af8ef4a437e2aa4f7f344623a. 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/QZTAX2346525.