1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3d13b356e55c64fdbebedac85cdcb6573617a048f7cd3090e8a79ce3f6706480. 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/e2368bb2-41f2-4d89-8c2a-26322fb3271d.json and https://artists.proofprofile.net/proofs/artist/e2368bb2-41f2-4d89-8c2a-26322fb3271d.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 → block OTSBitcoinBlock must exist at that height 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 0xc3923f7403920763bc59839b78a9f3c369c50a6b3ee22ad6b44490e4cec3ebc7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:02:06Z), 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/QZK6G2382109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbab0dffaac60bd87795e4fb2e8be7065525a97ddc7cd9f94a2b6c7de8734088. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMER2382137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352272c43456cd15424ead3e013eb9e98d2119a1cadfe5b37a069255667ec9ba. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZMER2383557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd19fed7c1ed27ff5777ca8f0d130457ef8754d73665ffd7dcd514becbbf3a. 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/QZNWY2336718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f92c11e7bcd771ac0f630c09412327769ed6af47bde8aa92e2b7221eb2d5cd4. 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/QZNWY2340605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b314a4131c2b5240d96ea4c01ffed9c0013ebc5effb2d9bd915990a1a3c301. 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/QZTB82360378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6749cd54dd76b90fd4ce110162e39ffb790e39fe342046b1e9b6975bf80671. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:29:08Z), 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/QZTB82360385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfc5dbac9c4f8e562539f278852dd5bf9a5befea501d8536b2bd04aa421e00f. 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/QZWFK2398267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9befc3b6f0bba33a43a16bfd342ced4d130da5d6caa8aa1a0e6d0b5852e06d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:32Z), 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/QZWFK2398270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2507350b97e18866264c10e690c04e9e3a854a69625371a633beb39cb9088776. 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/TCAIZ2436782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1015158e8fec8c28f233de8b95a276ff79e03dc53f2ee6e1b6f3c3d784987de6. 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/SE5BU2584223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a587fa037667dab7275cbb155ad04010f150fedbc6c2b08097f648a82c50c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DE1ET2399422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f179a2d22fb0a6c0d417c2b6f40c7e32b2726095d96fe61acb2cb69879996. 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/SE6XY2574698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14718ce3348c2c7635dcd1708473002dcb5eb16efa19d6e73b8d8e8602ce6c75. 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/QZPLR2545932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde086284f279c181c0c8b6fd4bebedc6ccb827022b39a34a15810de7ec9ae0b8. 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/QZPJ32482910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872e4c03355bcc96448b762cda4e9ab49490a20bed19b67bf12aba9f1a2cbef. 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/GXBDT2466041.