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 0xd02f9c7eba35aea558608ec772e71032e0b6c70976f5cf43b76a92d40da2445d. 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/535878dd-bd25-4a83-b999-dbf93e394151.json and https://artists.proofprofile.net/proofs/artist/535878dd-bd25-4a83-b999-dbf93e394151.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 0x0d68ce1a2d6bc423d1b3e4cfb195b733859209ef5a984ed605629811cc8f847e. 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/GXD7G2572554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2713135971e41bc7fbd353a606d6b0d7d34a1616ee655ff5b9c6747d26b94e9c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:40Z), 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/GXD7G2564738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1898865c41b33142f0c7d65d4acbb13782f3aa0e674c354a4faa471d679982. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:34Z), 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/GXD7G2568125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbba41260f488a336cdb900899a37ba33f5736ebbfd313bca30e59e9be2eed66. 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/GXD7G2579552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89a11d18dd8539ebef08f6bd9673be291d34d70a6aadf1e214c133b04e7991b. 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/GXD7G2566516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20911bd9d01c5b6b4bd8732761a4993d920934a5587066d3a6a9e7484c831aea. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GXD7G2562242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cb149151aea557aee30086b9332f9537f3ed0008098ce4594bb3722708d645. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:36Z), 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/GXD7G2502258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e206dcb463b796e4062d44012a4b44b9118be53bd8766218e2abe445b83e83f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GXD7G2509538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79bb72d0475c9d082025127ee87efff512bad5e797267a0049b1b96470a0ca2. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:18:31Z), 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/GXD7G2541207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3046ae1f854839bbc55becdc029c91ff20f6b625735017b4fe8efad055c3b554. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:32Z), 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/GXD7G2577850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2125b92299ac8b923fc837d95e21d87fe045e51090ae60023d8696e0a82625f7. 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/GXD7G2505923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d38b29b8a2474a0ec8ca28c136c218b89788e29fa62d50f97c3b100bbf92e6c. 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/GXD7G2589351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aebae3c49c110ab466d9cbb689c651d5f7ccd0e5a7e8381186e009de904b51. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:17Z), 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/GXD7G2577948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8d86e27afe32cc3738c5f38046a1a6ad62702a7d00b2e0b04562d456bd74ac. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:04Z), 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/GXD7G2513752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd621f9e07ce12863bd71d25044713bf663d1b8ff204caa30e291f5e12fb4dc2f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:50Z), 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/GXD7G2546758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8137461bde06e1dbc01e3e0497678bdf2263f1ff4d928561b996440d87b9da8. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GXD7G2549385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451186762e88a10def9012a33f44a4ab02d588a770e0e61f07090433f77e0d2e. 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/GXD7G2542142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f778d4b96baa2fbd981584e0e7cab7545903a44b9ed3286ce234342e920728d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GXD7G2516486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f88f2622a054990dcc59e44dc4cde7dbebcf0b121dd22b8c38afa3d103875f. 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/GXD7G2582175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68892bb719ff2e4d9df626bfbaf284726143e35e2c7c2aa5e61227e9c0963568. 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/GXD7G2572457.