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 0xc9e93b01a5307f0750ca2d9451d7fd903d3ff54af8430b82a6681b7409cf292a. 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/3e8ac83f-ec19-41b3-ae91-09069099efb8.json and https://artists.proofprofile.net/proofs/artist/3e8ac83f-ec19-41b3-ae91-09069099efb8.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 0x746ee639ea2d7eab2cdca0aff5d22135b9e7b3ee78b3b45aeea9d867f88e7c53. 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/CZA752258901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503ed2a9dd3ec0db05cde991647ea8c1b0ccdcd025caa18dd2aff8f1cdbcee17. 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/CZA752258902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37657d0e57f7dcca73bb0bd16d6bb17ba2ebf7a2313e8b6d39835a5a2ef20e9d. 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/CZA752258903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d17c91e6ea5cc21f69141405934ca5b54681871c928c9b0dd6c9cb5e2714ba1. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/CZA752258904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb1ec59e231252b9ceca3effa3049169476bdcff3dcd8457020b4dd91a836b8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CZA752258905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88172dbc834176425b2775439bd4a4ab0c849ca6d5656b2ea42fdfb072c02cac. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CZA752258906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28147fda90c88e0a66c394a37c413c2817f7cca6113050daa5df8614c8b9af94. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:18:06Z), 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/CZA752258907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eabdad4db00b2104c9d7ded3a1dffe8c3b0841f33172af66f4fb4ae517ae017. 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/CZA752258908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d88b4941fb9f76ce99c745705208a66b8fe414f566b4cc9042239ade844a349. 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/CZA752258909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18eb41efc8ec7c0831ca9526977f4a53024b760e637a86575984f09c70dfde5. 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/CZA752258910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9811d3945f9c47b7d1caedb6ad07ce76db6679a46603b9e97d7691ad6d62bc00. 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/CZA752258911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dabfd9cd033f70111a336e5884b62b7f0d1f71691ef4cb9d96e986d71da3a2. 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/CZA162401655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08ee280d549dba0c63926b228f8ac5301115e2a82eb12318f1406f452d80cc5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZA162401656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a3184ca2e1f0275ef0791509ceadbc3f3eaefd61e56c83438ccd41b3f43fc2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/CZA162401657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab8e3f41c24afb876bf06a28adc7076c01ab92e7cde29ae68902b8d7e1c506b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/CZA162401262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ba191ea465d2f4158d55b5cd3c72d3f557154f9af811c7173b35f6ff0ef15. 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/CZA162401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5eb7b3dd37242c966cd5dc2b3143643c7460586b050b946e79b7de2668c04. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CZA162401659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe4f52c167847a35f022535e5eaa8f327e016abb8b459ffe89b0fc5f22333d. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/CZA162401660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2798a95f049aa4c27d016658231ea1309e6e6041b6a3fdb9866dedb32548d50a. 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/CZA162300808.