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 0x4326a4fbfdb464ad6bf19c0fc74e4f0d717b849a680d990fc8083f1536bd6667. 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/a13a1c31-42eb-48b8-9d8f-af8343b4462d.json and https://artists.proofprofile.net/proofs/artist/a13a1c31-42eb-48b8-9d8f-af8343b4462d.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 0x7aad3ba40d84c2120416d0b8f802c0003a90663afc784718d7ab76f421e5aa8f. 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/IDUM70700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe956f6f1bab8671a62502cb4ee68af9469ec128cceb0864bd00c151f1a5cc360. 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/IDUM70700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8201abd5134718772dd3c30ca0246a500cf2762da812c4de7120b18a7060cb0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:36Z), 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/IDUM70700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234c5898bee05df23f72ff9abf7e7a26f9e6e8d7d8b865dd9e42a8b628208766. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IDUM70700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9869982acbf4f1217e0ac5e2977379eaa59a7b3e1976d2ad2767e3a09e8d61e5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/IDUM70700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2594458f77016a9ff8d223184f39ab6d6c9cf03a1ad50c4ca7228484a364d13b. 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/IDUM70900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb79bfb92fa73d64463b0f628b788c5c66f4cb96c253d30dbd830aaf72fa2d16. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/IDUM71300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b20f2a73f774b9122d5bc38d77409090a9256bf869d4b3d6ac0af9a995794f4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IDUM71300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e04cebc39e8a62ff753ff180718295318fb8e9c649905256daef8243a14034. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/IDA050500904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55be93f478ef63f6b66091a3bac767d9f1f270588672010f7ef3012b40e3ed50. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDA050700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e0a43fad886dddb20d037fdb795e4433bad75f505f259f70f21eae770248a. 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/IDA050700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb442127947ac37e8b4e4fe2782a5c10d68b4933ff6f84bca7004556f710e226c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:31Z), 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/IDUM71700247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07edbed2864068826a8e28926904da5a25a5415c858f9d876ba16b86fb2162d2. 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/IDUM71700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04de7ec00aed7b3f36e501a2fd631a88cc8fa06470112b2efa25ad593e9f608e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDUM71700243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7a692ae919f83191f18801c21f09f4ec437513d500755ff128cdc0d10a6981. 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/IDUM71700245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed543090fdae6a1ed09304432576d1286bd9667dca92a3f957701084b432bab3. 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/IDUM71700224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d77eb090e18dde0150c968d36cf68c8a0c94ba196a70d253af6989fd0ec5962. 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/IDUM71700249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f995254cf2ca4f5668ac78e6e6322befea2e9835a774366c8e4837d6528bad. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDUM71700250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01148d46fd7229cbd3a4e4437d1e73670e14a74089b6de4bb2e1ffc98dcfa7d3. 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/IDUM72200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe8e79c9bea543d5905648bdde44044f79b1423bbe45d5eba878130f05da2a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/IDUM72200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8c9c998067669c1f1a62ff20b51699a5a4d8f8f286b0924d2aefd9272b2a4b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IDUV72300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9f2fbc9b640e59058b38326a8cd9fc5dc37fb9d11ee2fc7ad3084b06f67fe. 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/IDUM72000036.