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 0x3f5feb6560031728984cb55c80d63b7bcf93bf90e204af8b0efa1105160d1b51. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c66a8456-94a8-49a5-8d52-7bf309e20851.json and https://artists.proofprofile.net/proofs/artist/c66a8456-94a8-49a5-8d52-7bf309e20851.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 0x2b57c1671f4c238f3fcf872bfb531d32deb4dce3da111dfd69bc28610b3fea34. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/IDA882026044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5672b7f848584c316a44440264b921ab10186d6a2d20b12f7e8870655f71091b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IDA882026045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b688586b8e0a745fa13c2d1fe34d87723c0b78b10bfb88470adec1daf607acc. 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/IDA882026046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a42efb15e68e2903a6c7282b1e80cda1c68e3923eeea3df49733a21f6ad35d9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:32Z), 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/DGA072123899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e68a16956c8736700bc14a2eaea0d6022c72e996e9b97039fc5bbb41e7b986e. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/DGA072123900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab452586d9fddc6f19c0003035ac6bd12f564b99393b5aacc8eef717a3fcf08. 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/IDB201900400.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92649a030a55cdb5e2f51b47d0c04fcf1ddbb2645602c162c1c038774018b51b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DGA072143717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c31b5466b61aa8cbea783c825356ef78e57d448a4989b5065143c109bcf05b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA072143718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6124f11a348e8c84d95d6c0efce72dae949371361aaaa49cc37b3a359a022e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DGA072143720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6629d89c88ae9959cb15b421700d7af084cc668ae53774184d409d86721fb7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/IDB201900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d6e16e161f0946ddfc825200d925499e4ac0a655d0eb4c14b4c54eb53c0c24. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/IDB201900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f975194e1090946a54201123be232afd1e07ffede5d52b1585aa06bfac08eb. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/IDB201900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db92a122ab95d3570fc018bacd6582fb1cd53673c9c03ad052feae0e21a93ad. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/IDB201900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36c187b09cff3abd17909380b66285ab970602a1aec211508dde7efda7dc775. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/IDB201900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a092801ab80c7aa8087ea9d40630775ada4549ee5cd9f1cd98f16b661ef4934. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/DGA072118621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d42ae1bd06ae69f83af1aad3b833d3ba6c47c9e797e881d6424bff4cbcc2db. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:50:56Z), 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/DGA072118623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222b659460c40779429af3a33dd7719d67220154ebff8159a9c62e1714a90597. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/DGA072118629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf82cf5e7c3bff557f9be3cac11186e20821d1a7513c6f5cd7998717acf580. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/DGA072118631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3095809d81f681bcd5a74b266cfffae48a2548245ef3a7ac3af050ea603d3e89. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA072118632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874a95d0c9bf95837d7e36824bbd796823e623daaa2536e3c244018834ff12f3. 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/DGA072118634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da736ccb643fe10eabfd243699d1b90060ba1c581a47c8e3c945f520607c9b4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA072118635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6398b3a915c796f798e6e6cb6499ed9faa67bb17fd38cfe6aa5af0e0ce22df93. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZN882246972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6e66386a57640ab8796a1d0ac4e9817dcf2135ed5524696426beb186d97fb3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZN882246975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c3af234d4e5059ce151c9fc595b8fab56c158d8b660a048d2c3d40c8f072b. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/QZWDW2392404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd47587e7520221cced036ca9ac32d13eb60596a1fd2be54743299edcac9c61. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZWDW2392297.