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 0xcf9442a25467e3031d6fad798262a90927f923914d43f8d895d1a0ea084486d5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d00d51bc-59c4-4440-aeda-57f5f727c671.json and https://artists.proofprofile.net/proofs/artist/d00d51bc-59c4-4440-aeda-57f5f727c671.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 0x675e1c57a1895501997a304fa8b5dd470835f477a09ecf20591c755dfa59f3cf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:59Z), 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/TCAJL2543200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db4e44c3cfd5192bf70ff845cdf0480212ba4550bc70282669ef9d45d0d165e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAJL2521827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd271c19d5f0327a1e6f94bbf83fc81894318cb3005062cac863cacbb52e5aec5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAJL2521567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b71611c35a733d05409fd1677e427c4a44d1f8aceb278a3e8d02a01377f8387. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJL2521901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1edd8b32d8fcd4da0e03d69de953642145f234d6df624136e3e2535667339d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJL2521934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d35be5c0bcd7b3999b2f11de3e1f95579b9130d0b8adb31e35085ffa4bc11da. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJL2521660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d25739d2a960591869fa0346d531a0a13e3cc1aed52bc6e4f01a294a66c7a1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJL2521729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9c1319f64c37da997a4e7983d1c73fd073287a09c7795f05fa870bc1f877d4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJL2573317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeada0d3a5eb6874db2f508eda0c36143e9cb4029f47da5a1ffa4a3e03c4ce6a8. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAJL2521969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67bc009169bd51bb15270d61446a4d6c842e1e8a8b62048f2c7a97d86b28666. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAJL2521781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae609cd3be9c5ecc7ecb823e9d7cb739f2a4d877d510e12cd1eb58fc8f50ea8. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAJL2573336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328bd099b888d504418c1766bf4b4cbe06ba0d6b6d397ce9c1012e48dc38cb2c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJL2573362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bfaf87972c337923c20648dd1d4efc142e93e3621125c9487bc6f761b57157. 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/TCAJL2573385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c759ed711914adee492ad4062bd2c190169f6b158c06931e897888a878f427. 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/TCAJL2573403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b619087216b8f45617d28c17db6360f5c4b9c91470beb2a9bd0316a2257b00. 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/QT65W2570388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124b798357ff4204224c2dc7a12d483a0fae10abbd45751a23f7b51a25a3f74a. 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/QT65W2570419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f91cb42fb44fe13584a21bcc0bba770bd688c4a4c65c862e2bb7caaea55683. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT65W2570428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446034353a575e10441a70836e5fde9253f0dff60f508820a2e5d849f119b255. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:32:09Z), 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/QT65W2570456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59066be15f369c2aeda314df1fc7870ad141a2c3c2cf07a829c13e1fa37dc2c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT65W2570463.