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 0x03a04750f7c087873949b11471b5eb6dfe0f7e429718afd373ded2d012fa65ef. 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/6ccdd5d3-77dc-4cb6-8d7e-322c7419cc65.json and https://artists.proofprofile.net/proofs/artist/6ccdd5d3-77dc-4cb6-8d7e-322c7419cc65.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 0x570c7e0bf5e225f2300e2cec246df7523acc3f353c4ae6a75066bdfeb11a4dfa. 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/TCAJB2480728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fa6ace700644f996c230359c7f8a10df3168b9ad9fc50f8caf57dbe76973ce. 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/TCAJB2480781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45795ca6728ad324041f8b095029d7fd8f07a57ef1b649788096f9c0eb852441. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:39:49Z), 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/TCAJB2480788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83b4edea9d6b87b760066c549e6f4a1292744cd192a1b5331d755a67c69dee7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T04:46:52Z), 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/TCAJB2480799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b3fa7862bc4f39938fdd409ee961d6de20bb5d4c53703dbc55effa866db181. 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/TCAJC2480864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd60511aa95447dacbdec8f9b6007fcb37bd3e54cd17455964c36769924f5d9. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAJB2480886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59bff1e69502ad900e686e14f4ed2578af7147e9ae8a09deb469f594c7f4800. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJC2480893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47460c65525288fc103092ce70c81434f5e273ef2515685ee4926c376ae583ec. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:18Z), 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/TCAJB2480904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037e5bd52d8bf67bd0b12499e5cc98b0774210b41bcc6259afcb9b4536476f42. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJB2494021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2738358b7d990f67c46dc486a44e137ce06ecb8e59e22c5fe9090a6990c4736. 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/TCAJB2494026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c71ae7fd55bd2b98f8f8b18aa059d893d8ea7a6166a9b2fd6a2f42060ce8508. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:14:55Z), 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/TCAJB2494029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c3886a4fe5ff288bebe5babc72117e77d569429846c1fb3a5715ff6d5c4c55. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJG2508904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63dc6215358f3e6ca4a94b1c105e602ce702a5c99337a30171c72d2cf99a165. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAJJ2559412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ef905d9b321362ed353db67e17a1a687f9181d3f64e313ec0c63e59df1815a. 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/TCAJJ2559418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb544e9c031c409ad2e02350f232763b02024fadbd0c0f277679f6ccb0132f9d7. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAJJ2559422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d4a9b6c9265e51266bf6638b277927ac73adc962327427368c255f00d005b6. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJJ2559436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42a7ac68a94164feb58283838bf0345ce0412b96935c804a5cf62ffd14a01dc. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJK2559444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c86e612f12538a1a4302b4f03c634c728031124d50c5051218ba8cff137a6e. 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/TCAJJ2559451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba826dc10dd0826bbd69086b6378ce9445dbe6c013db3d6d2d69c010ec77e5. 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/TCAJL2502503.