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 0xf63ea42a2c0d9e65d0137c18283b662b7cf5a839d7279be09b25e226aacbeb2b. 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/0bc00c8c-f161-47c1-ab46-25c2f19034f1.json and https://artists.proofprofile.net/proofs/artist/0bc00c8c-f161-47c1-ab46-25c2f19034f1.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 0xa7f5de48530d845f479e9f154e30639870e707ea135431d830e1f0fd7113e3f2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FIMUF1200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7042c98e706770bc58c468daf124d2fe8d0ae4eef7dda199417884b3b8c6bc. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:52Z), 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/FIMUF1200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6e6ccfc050c019614839317ff8a4bc17f4d62066efa3421e848a2ab8c72155. 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/FIMUF1200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2aa5a0ae749a0c759b11c90bb657e91c49b7a9ede1a775842d64f236c7184a7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIGRF1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15488d67bb3d333e977eb92eefd4ec311addf686f41d794045dd992f53eb90e9. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FIGRF1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0869e5c27b69ac52543ac0467add2280791ea6ee64c7d1cc18cc3d14d25e8b08. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIGRF2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f43bc4f507d1ed476a139702567928fb8808ffe30a52fa116e3112e1132fe2e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FIGRF2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4674e7da977756362c59d6146bdb69fe01ff0900d579b7012a21642c39f565c0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIGRF2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19b794f992bb835608de9671406a9cfe25dd4ce412a20f6d62affffc20a7475. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:30Z), 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/FIGRF2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27503d01d69f075d1ef6ba6fc724ccb28b2d4e9e61eab3e6f5f7e0ed35b51ee1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FIGRF2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32db570d11305b722660a1205e24d167595db68fa39c8be91e905eab10072ff1. 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/FIGRF2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a522d248c847d1f42502c0426e779a6ce9d8886310ef950856b0e27d677b8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FIGRF2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56114b36c34f421ce55f1a25b0e9b9463044f9684f5ab18632184c22c522b19f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FIGRF2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6a886361bb643c3a8398b2e8a5f542a2de4c7ba602eeccef2742d1cb957399. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FIGRF2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b44260ba88abd3cf6d3c3e242f721acd984dce47dfbcc6350cdadfaa24899. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:51:36Z), 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/FIGRF2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f874b43be61359ea76263c7f81ba568c5e3f2ba20d9f6e11f40f7e8edc0bbd. 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/FIGRF2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32faf49c210da3dc56f8fe5fc28609e9238bd75cba034a9e7710685e7c1a0915. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:34Z), 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/FIGRF2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b6a9b100430f478ea32d01893cbce25f79c9d9babbe87ddbf24330752556ff. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:25:50Z), 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/FIGRF2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f765bff2bb9ac640a8f16f5951b1eeecb23c10db1d1eb33665d82f1bf40d7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FIGRF2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cce9f694fe03b046dbf896f09360c07161d4464dd02d29d036c8d91a20f643. 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/FIGRF2500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256a89baa63f772dbfcb88e071146181aaff774935c4aa8a092bd7fa18087ffa. 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/FIGRF2500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fcbe944afbf97267064c1778888cb8a289952bab26f0bfd21297487d3c0d8c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FIGRF2500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1ae3eb52b40655f65235b3364b6b1d28fef72013cb0c1662d0ee45099952da. 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/FIGRF2500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeb6f85e1255b7092dd6752dde16f902d15d7de1db1f81dde1eb2b44b2038ef. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FIGRF2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f2ec9349c38aa3af5eda1f987fd8cb4b706ab8d57cdcd0bb91440912a03172. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FIGRF2500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c3e4dab574fe3350f5dc594e18e8cbf719d12f26d23c33e8ae5e65aa0ed7a2. 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/FIMGM1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974997fd5a28b19ae5864c78fcd83bb415fb8bb85da3f54a752665720e19b43f. 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/FIBAR1100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae03380b6037f130c6ddc35c112956808d224089e5006fc197964109fbe14c5d. 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/FIMTA0700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3bc19f45c9aae86816bf719d639de3914da1ba6549e9f37aebaab475c60f83. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FIMGM1500011.
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 0xa906438756c1bd6dbfc6fc653b91257871d6e19a6beee032a3c5a8dae5bbac5a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIFMF9201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0222de7afad49961c5aa51152063005beb9fdae9aefad6bb52ab5a4cc04734. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIMTA0800057.