Bold most commonly refers to: Bold (typography), a font style used for emphasis, also known as boldface Boldness, or being bold, a human attitude, the opposite of being shy Bold or BOLD may also ref
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 0x435230ad939fc62c3ce7d49a65d656d15247fe7bf6f71a9aba112d4a3d885ad7. 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/136a445e-b070-4863-8bea-94d5755a96a1.json and https://artists.proofprofile.net/proofs/artist/136a445e-b070-4863-8bea-94d5755a96a1.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 0x22d1226c617e3ea77e42483ca715b53bf7c4f4dff0b83c0f7c2fa12a7c775e9a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADR1861333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87b6eef101562f56425e89a35611676b15379b778841774dc1fa7c13eb6d55c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCADR1861340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bde125b696d7bf4fb29269f310d527d87c745af06a09badf75c32972f9c2dd7. 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/TCADR1861343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa394ab70aac550a578946fe5def648240842bf57a55e36b9baacfd68327f6b0. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/TCADR1861346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aff058f50c7052e6453b695fc32b7f4a02ef3432581c3f73455279da87819b0. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/TCADR1857458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a8ff20b12971909aa11aa85d911669e3c7a4f4b4a859ae5ab56493b0bc7698. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/TCADR1857461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d362dec19394b34f1a2d2dd848fa659b5182e6787d1c82e7ba20335c512e0a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADR1861828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee56ef7d8224deccd3b69e276b149e4bb36ef4ba9df2ec7c055288bb436ae60. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM21818467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7489084ae813ebde0b752a0e292bdeecb0c6f73c2184e75d01b660f3a50f78. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCADR1865931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc009bf2ab1afb48c087a7f4da24437cdbaee56250061b4131014d47e4ccc7a5. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCADR1865949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d46ccac94d5d44bb16e94e34062bea8145949a2eaf3e6fb3e1cd1ed52039a40. 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/MNA031900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2b9813cf80f6055542d44a06035253c0cd318c92bbb55ea605dbb7323340e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MNA032200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f0783d41543a43af1439b6f18caa431d9cffa1954c26ecbf6d68da1c06cf92. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MNA032300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c968e62ad5a58c624a37e983c5cfc788f328233a2eac15a80cb8585dc80dc64. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MNA032300345.