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 0xad6ad10d92e8d19ab0703d65584e9905ede33def94b8936c0e86797ed744fa4d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40faaa38-93d6-49bb-ac9e-9666cc4de55a.json and https://artists.proofprofile.net/proofs/artist/40faaa38-93d6-49bb-ac9e-9666cc4de55a.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 0xef0997f3b867d37a407058cbf9f8292bbddba33f437057af0e65482df81754cb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/BX4E52260752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd279ca3ac4f980ea654a42918f038a2fda53075f2316f175997a040cbb9c9c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BX4E52260753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183bf0ca3fb931df54f7e393ad48f730551dffe31b0c5ff005cca375c616f9f6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:13Z), 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/BX4E52260754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59655d603a3a2307a571b0131199e048fbb107748b2a52e2781b18af4ccd498. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BX4E52260755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679045d577206396c506269bb3be4005b1144eec7c6ba4d3910718802c076d06. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BX4E52260756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a59fd32724a98c4732c66d8e9b93577e357ef402f0dc8fac9e3c82e8251773. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:26Z), 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/BX4E52260757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd964ac64d9b78cb5398e7f2cb07dd6a5cda16a83893cb3bd8aaf48c10be5dbe4. 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/BX4E52260758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311b9a96d62d8b28b25652dda6f02e975e04d06fef0f980f5ee09ece27700d6. 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/BX4E52260759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cafee462c9502ccb0de78b609600397e928fef0febcd725b87b0e8137bf86f. 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/BX4E52260760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dc47cc80d6cec07f0753e772278bfc7c77537729a2fc07c720087811b62e40. 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/BX4E52260761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fa515a2f30d30c958da3d18e3e346b452544a29156a62b098a38a2a934469e. 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/BX4E52260762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb69d76663ad51b9bbf7ab6fbdc4ee2098fce4c59562123dd48eafc645c4b061. 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/BX4E52260763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f4b7a4dbfbdb84438d4673a8185d4d57e89f68cf8f422d681ecd34a7102f5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BX4E52260764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e091cd4a4541082faa0282ac0b6b0be9514a1a28718d0762b7ea0d5ce854318. 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/BX4E52260765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e336846ba7441b92820772dc2d18039430c28bbbe9a67d394c398b3d7ec8426. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BX4E52260766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8110dc628caeb0e3ddadbd0c529995170c36819e31e116bb8a305c04ccb134. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BX4E52260767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae039d090d1c63acba061fb96ca6535959ba3d9f029ef478bc651135d6d226fc. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BX4E52260768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45a80bd5a8c1d8e9d108959211d1ad61474a492ab1b37e8bf6761180d235a92. 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/BX4E52260769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aed6fa8b8d07e9f9225b0f208f0b5c98558718aee89455b8d96e15684546b3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:42:20Z), 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/BX4E52260770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9dd70340604658a6caf437e27e51a8b996e6be1951ab28a7384dc2674ecfba. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/BX4E52260771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34842388f950bc6551a67c1c9adfee65365689d153391205be2d0450daaf5f30. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:25Z), 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/BX4E52260772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca207f965d168db2cf3cf95b9962fa8df042c522e9564d388bd485c5366282f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:20Z), 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/BX4E52260773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae20d8431f5c770c553d558704373c2e4821c2486b1b9967992e08930e2ede4b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX4E52260776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3127398ec4ef48a5996fa503ba4049fa113afc6f2adc3edcad4d782d004aa482. 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/BX4E52260778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b0967b4c3ccb9352110e8f54973f0784e34932762235e35720f1af1b46c605. 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/BX4E52260780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61bd2161739e8f6705063d21b9e58e1f53a0a9ff0bfe72edf70f23c92abc849. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BX4E52260785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099bfdd41db78cb89f9dae7577a01e9d1c1dd635ca489aa0ba1395487d191488. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BX4E52260788.