100% may refer to: 1 (number), the equivalent to 100% Music 100% (band), a South Korean boy group Albums 100% (Angela Dimitriou album) or the title song, 1998 100% (Beverley Knight album) or t
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 0x02c31abebf758637b40347fd7485f8095a2c3c4c0e1791386709f246e14a7682. 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/a09ef57e-57c1-42c2-85b5-e0f226f74126.json and https://artists.proofprofile.net/proofs/artist/a09ef57e-57c1-42c2-85b5-e0f226f74126.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 0xac59e36b435e01c1b26d34aad3257c1f99f87cae0305ca30f6138c02edceb46f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USQY51792109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ec7f9ee4477aad438c87c94f87f61b1f8f7a779ae8f7e0893589deb5f878f7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USQY51792111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014e3524a0d8e1755b11e66874767b27efc8d5005c129985823be7f64d9bc478. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/USQY51792112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd637ef2c72495c9119c6c965ef75aadc23667bb049d14528d741dfc67ddfd. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USQY51792116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0689fe13241df883ea04d6f4586ba86b9bd7809537b20a01de2ea2c4cec33dd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USQY51792117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07365bd8396c53c7da77b767355f22964ac4af7a540ff16d49a7c880a4873048. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USQY51792121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e571e0d45766c9151d6ca85c2440fc69a36658e8b3a1a5fae9d554062db747c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USQY51792122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd1f9ec4ded5a83941a184576e6bcd0fd2c55519073dc133598adaa263a37a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USQY51792123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5baae9162fd01124ee52c9720dd0d7d90eb515a737a24c4892bf8ee2b14513. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USQY51792226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a6d6d33426d1c523a9d974dd68f61a861f780b0300dddc924dd967903c4909. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USQY51792227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67de0cadcfcb7d04f39eafafa780abb5b71f3941e82b7e9488cf50c96d42b019. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USQY51792228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e086435a960b74ea1289b92bca451c55369e079cfe3ce8d161e0b3a05e25928. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USQY51792229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c195b5d549b99b633bec304f7e8547e1f3b742b446bd0e0ae2cafe8c8a6833. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USQY51792231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad82dcd1d9711f460d453e2807f983ad33e21fe6f7cb48bbbda681940279640. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USQY51792232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc446963b43f39f580f031c87d6ab8880ffe3ab20623e7444d850fc1ecfe729c8. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USQY51792233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be9d22c3bbb04ab608cd9153ecf577df459aa499e6c6ef76253ed02ed8ab9ff. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USQY51792234.