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 0x7609b9b1e10f06485190ad436dd4890306458f5fee5b3a25fe38994e449a4aff. 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/4c21c0e8-bb44-4cab-bbca-1d592752c316.json and https://artists.proofprofile.net/proofs/artist/4c21c0e8-bb44-4cab-bbca-1d592752c316.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hargrove & Sweet Southern Sadness - The Early Extended Plays
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 0x12a6f7f519d4e0f068f00529d6aefffb12e4af049f70ef43b418c11d38a833b4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAEH1951130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac1ccda8fdb67f6eac69d60ec8594745bc9326797d0e65a47d3dbb4670c3aa6. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/TCAEY2083510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286c34976a255a78ea281acfd55cd7345730e3f60fcc7b1ffa6a757f071a7132. 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/TCAEY2083516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f1b3835571c9775b7e6ddd2ff16010b9bd5afec160cce8dfa73d9c1fa57ba4. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAEY2083522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9648f34d57f6e468e2ec716abcf9fa2a1656f74174780b663cace83536f4acf3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAEY2083523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05ef7be2ebf1f227584e8677932ab04c848e8db186aa6856543e3ae9c00043e. 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/TCAFI2150122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadf601374d869eca163a092edba5113336f2e7d6d35cb3d8079ed503d220003. 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/TCAFI2150130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9806492c5d73174f3d079bc30bb552b1e116a2545c13420babbc82221f33ad7b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAFI2150140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c46c2e271201928bb99a5cbecb40ad3002fb8daabf39f72babaed6e7d5ff1b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAFS2199094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72fb1a144d5b980e6121d89f979302c0c3ed887cc4cce0156c97dae652fe171. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/TCAGI2266153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb0f7f975ab7d2f364ad92a3727fe46ed1765d3989f78b6f6dfb3b26094eef4. 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/QZVVD2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854f254ba0c86abac9ee5a03f965f6418a863a0c2f56467f999edeba9d2d7095. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZVVD2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b81e040ce016d4d429afc628056cf5e9b1572821695ba3855aac4b93a9847c. 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/QZVVD2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd30cb74031bab8d84fc3fd010dc6a051412109d65216334914621755399710. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZVVD2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c18d38f86130820c3f9503f06e7cc7ccb4169e4b9e015a7304ff65e59d8cde. 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/QM24S2302346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e95a68f6c114b6193d4411699989c8836fc10295fea74d6d1942c257664691d. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZVVD2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803852d41bab4c5c99d17877840e924eb39671ae8f2c2d31fe821016e8b7c459. 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/QZVVD2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167d78eb5e6a9731de8f59b20109602f22cc87aa915c77ef9b89322bd09f5892. 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/QZVVD2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a26ec369993aa13dd61306e23d54d4f948adf99a04dc5ff08426be4676e578. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZVVD2300015.
Drayton Farley Live AF Session (Live AF Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7e8366c0c52ad7098ce197a1d60b034cb1a5a8060cd319e3cc7bc1609af5d7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZWFM2377948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203f3bf459f9ba3f100b9864e59e6cf1bfcb2458705ceca854c970cc60a8d987. 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/QZWFM2377949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebd18773c5ad9c7773cf29a3f071b1917ff0678b680a1c8fd8ed7ee293103dd. 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/QZWFM2377950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b270cddddd1f879d987cf25759f0b9bf6e24f06adf85df36882697666ccab1. 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/QZVVD2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3401999c8ad154f149cbd2a3f83782a63fa1039d9e0b1ba7379248601fd11454. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZVVD2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf804010ac24ac1b931d4a28eb30279cbc4392704456010cf15a871c2e97f587. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZVVD2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79029febde67fda44188d9538fbb1f79be9559f6be6f9c0876383b82ddbd5d9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZVVD2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dce8afd1e5f6aa2bfadcf9c7926e64efda1991d6f23e0701c91622f8837f98f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZVVD2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3e608b91bef1ed3deacd097ea3f6850828731e7abc383a3a62f6327882d5f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZVVD2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5ee70e9d828d74cf733e2024bcbca5eefac1da08cd03fc473ac635462198a4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZVVD2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1ed74fc5b920e25f33f3e00147060e540fe2a6cb2032f98776f6fd28eba53d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZVVD2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03d653375a41255277571af84afc9a23ed02b6a30d17ccd1f959274f6158956. 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/QZVVD2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df43ae2edbbccd52a8ee9ce5fef7c12131cc15087f1a0ed2781cffe0a6a828f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZVVD2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3992622d260158db30e4792b97a4aafe120c9f4a1ca100ca8cd97529505f717. 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/QZZ222300003.