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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e109057d45ca4f3c1fae9c57362e5d4b0c4252a22fec181f675b34402ff52a. 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/e66d8891-0665-453a-bc48-9b1e2d0e57d4.json and https://artists.proofprofile.net/proofs/artist/e66d8891-0665-453a-bc48-9b1e2d0e57d4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4055b0b852ada6dabfe9e1d6da1c143c6e2c70b3ab5e2c545676821344b1f643. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCIOS2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4952781c3e7e958ebed5e8a3fabb2e2e12da4d5ae629986142eb9d7b811e2068. 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/BCIOS2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f21063493bf4436be430ec0a3c7c23de05d776f232a42fd919189c7be004d58. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCIOS2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85891f432668d969eb3ff9e67b2fbb5ab492dedbef1deeecfc674c491f3d7149. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCIOS2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671b77da239174bc265246320429cbf98dd831ccf3ef878bbdf44d53ac43aba3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCIOS2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe229e0cd2f665a413b4608227bbe01e6d5f54b7a463c5cc87cbea64acb80ef4f. 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/BC9ZH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6598dc2052d041207d4e49791fc7d20b42615041c5add7336fea8e29571040c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCIOS2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4c98ddb045cc9df24544222af499742eaadd98422c5250defaa2720eeb68ed. 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/BCIOS2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0518ec0224018c701322d9da3c766c8db66cf40eac31acafeed404591bbda2bf. 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/BCIOS2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd6d79888c331bc3ba7302a0f2e3dcc6960c3a6e933a5d55f12a0b9a09341c9. 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/BCIOS2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964a8032decc733a13207a6a013d17b3a8b6a9ac5916a161fe118672f5880a93. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCIOS2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124088b390f5bc627ea40646ab1d1d59e40b331f51e61580e2ac787fdc4f317b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BCIOS2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fa1840707df457e4e95588c48078367c028cef1dfafc3f8847c19f05c82b36. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCIOS2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9822295cf09ee95e97b470c44a11f31fc3d4844af367386ae91f417ec420992. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCIOS2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79088505c2034b5fa6b42813c24f76f6867b963dca097a2c50b1172aea7086f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCIOS2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f2edf756d71787108a0dfd0f050a87b578dd0a31559f60fb8bc611af4a7a5. 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/BRC1S2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d3a22aa8506cbbcfab8ee9f3d8c42c47c7347a27ac9a4f90dabd3feb634311. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCIOS2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f54b76141cbe0f1e70c8b8f101bcc3e48c8d6401b93b22f9ecdeaaad0ff9cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXLKC2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b495bca389a2c3bbb61b18265a71667f49decd824d6b620033706fb219f2b2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ41940077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b84f5658f7fe843f75304f4093a80c75f2a4237bad5e00c2b62fa9b25475c2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXIV82402924.