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 0x620d769941f0825bdd8dc3c7be5457876ddb16426babe778731d2eec2036226e. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cedae61-25f0-472e-83f4-4b0fd2533c33.json and https://artists.proofprofile.net/proofs/artist/9cedae61-25f0-472e-83f4-4b0fd2533c33.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 0xa93cf2f3a377885dee90b55e495ea293aea05b73d2021fbf173c012adfb54ebe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aa79c47c78a780a69a8850b64746a4d49cadcc33421aeeac458947f2bdf471. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHA441900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18314b4d24406784c8bd567fed538bf9e95fca5871da73898112b6ce62b94350. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779025a3497296729e32df9edec4fccfea6d3b7acc85768265b6a2680c547d46. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHA441900259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4226ec429ab1e1f31a2a86f19f25c9c567df26e3304284ad56b1165da6c8fd73. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHA441900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1ec2ad96660f929cf832128bb7864091bc017accd7986d72f68e249c82234d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd466b99efa4e0e9769c5cbea60691233cce2732bbe1497f34a9b2ef027ca51b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CHA441900262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6359240f30cb352a02c43fc96db29baa0b7e69710e17d1c0ab51330e081ef76. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CHA441900263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26c745ac4370d4067d6d3ae7ecd9ede8d167a896d7ad1380ed02fb209d710b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHA441900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e3d4da0bdc3e9a9755d47c34e1a15c6bdbd36334afa39fc03db0c76fefa2d4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ed821fccbe9667b01e1773e6dc133e5ff22bca16c80e14d62ee8bbaafa6a23. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CHA441900266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aae68ebe1cbc89d00cf02b7cba3af827debdfe26683b2677cea529a1a4a1b7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CHA441900267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b126f2e81894046bd5f4da7a142f9fca77f48b9a70c4305ade21c2c36ddeb1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00463f0a02d17a4fb91c61e12461ff785ee8bdf6c82624293bf458f547b01c37. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHA441900269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcda7164b3bb76f6fb024d6cdd455ee633a1246befbe31bb9ada0bd20bfffee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25972381244d999fc156382f60b12721d6a94f0137b4bcdec7cb7b9a9e7086f3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bb6e083fc8d709335cd830dbc1dbd39559b2bd560bd5e31e7d8ad986c817a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CHA441900272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f510704a0ecc8b3c5f3078f9af4ea275727af5df9b29ac5644628d3eff0dea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHA441900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a688be62b9f47362efa3c0c30a44cae32d1080662a86d4053817cb70f1eea6e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHA441900274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7468c33b7dfd04b9ccca8c73c8230c968eda6d3c035c62630acc44c8ea75bd6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CHA441900275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5374723dd8f56987d5a7722c8e0d2f60b0d09a2640ce34c0e76c0d08ceb2846. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHA441900276.