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 0x9580068a71250b8fe4e5c6ebca669c03757c7e56f61f4450ddd6dbc68f2dfe8e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9db7d9c1-1e00-4dca-b46d-e368a8cea719.json and https://artists.proofprofile.net/proofs/artist/9db7d9c1-1e00-4dca-b46d-e368a8cea719.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 0x4ba3b484f93e85e63d6a1cd948cb75c58025af1a3458f54cef4466a7de78cda6. 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/BCHRC2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2840b44f052547af49f95bf5e29911f3f862f1e70947ccc94cbe8ba470c4eeb6. 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/BCHRC2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17a65abc6b466c3a8179a94e5c6125a6efb405966c31d72887be359e252aeb. 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/BCHRC2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a90d9adbc65d8c0b2821a196ff564fce7a12cb15acc9e85b402e4cd2a6ed40d. 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/BCHRC2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7194b117e2dfe41b50367128d53e99b5e2938df8b606e7b95cf1569564df89. 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/QZNJX2109653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227a76e5c71fa76a8ae2dd9f2f6051ff0116f60bb10fc56fc5d69ecf232b3812. 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/BCHRC2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb33d02c070fa258dddb81e42b04c2dfd124fb8a049c6134e832f01a23814d3. 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/BCHRC2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c63dffffe60e7ae99bae0a077fd9aa80f1d811e9eb728cedd3bd2d6aebb5a4c. 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/BCHRC2100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f1b5127e3f030ff2e85b5853bb4173c47b0a92d7354ffd18293e064fe333a4. 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/BCHRC2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bf8872ea754e3b38b092c6bc7d99276f2e6d9ac1598718a5b8420bca9ad664. 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/BCHRC2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5462d2059a0a08cffd17b77d30de665081077d0da9a3265fa473349f63e68e2d. 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/BCHRC2100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80d2072d5fb793f3888a5758aef70b45612d5c9f4663c4c7cbd566229e014d1. 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/BCHRC2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacce1ee12a28ecff170e1efb431ab22786ee67485b1a448e1c6fd98cfb88d04. 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/BCHRC2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090ca6f0512b0ed316e7b716fc7de4a053818374c0be1a1a312136bd6ed837ba. 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/BCHRC2100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe285bd62adf22168adaa7a0997afd21e9f6479624102c4f233e25bc2041f7820. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BCHRC2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc30ef2059275ba3d250ffd5c1d6ddf61dcc81f8676f704221f1d68cfe8549f3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BCHRC2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac243618a05bb399873e8e62fd2193b883740421ebec8b5e871033625aab26a. 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/BCHRC2400008.