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 0xc5003752b287f023e55644612bd2f4d652f63876f9d99101728efb91fe54c324. 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/7069853e-1011-4544-9549-b34ee1052766.json and https://artists.proofprofile.net/proofs/artist/7069853e-1011-4544-9549-b34ee1052766.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 0xbe188f0bb929517d52b81187a7b21443d62a54f27e8ad9841617cfaec27809b1. 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/BXIV82297450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ba95964c370f7595546c00720990409c5c39563be53dc23c1b9e0acccf4dc0. 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/BXIV82333633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3497e5f027bcd7ba5d1a1599468775bf5d2543ffb5d947ffd7e9ed0d454692. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BXIV82388128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7459d0ecd70c29ef71fc9625b6ccac75f146b6c350aba38381b2b10c8cd9d891. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:00:34Z), 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/BXIV82335180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b18f6848199deec9f826b76b3ebb9cd5cf362d08ed525267b804d36cc01ca64. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZWDE2388742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce56be3456ae686d01e9c34e05c34895496f4d1e80a1a5328dc0f5326f52acb. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:59:05Z), 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/QZWDE2388738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01564b6a25df581005d58fa71b5fb946fa16c1ddca6de161236a2b7696554b2e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN2595724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2e93255ef1faa4591e247253be2d114a29dce4f465bf2dce0a41ca33c547b4. 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/QZ5FN2595731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e03c474e91dec2bc0f607637ec86798ef5b23a7e784f829e6af9478d12068b5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN2595734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad712c1e345d30e4c18e9aaf2da83d1d538ab00d5e3624781a0edd8571e530f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN2595735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a36cae14807dfca459b226f4e13b0bd48c120393178843b654abb5e8f6db263. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ5FN2595744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f1719e1aec3a1cdedc426c354835743f4facc2967fba63d983a0f624d24e2. 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/QZ5FN2595747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b07eacc4ee5cefeb43f996d614ccfcf84aa6c2b20feba63581102126c8be30. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN2595748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67e0795195f0cc1e359aa50c91e42112bdc0395a3117c8a9aad43948401b363. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZ5FN2595726.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea8ea74ac1d258889c2760aad5721f85656060e524aebe0de036d72404cbe77. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZ5FN2595737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a080e29f4b32be16e562316ff538bf7593524ce143a1a8c021d6949ce2b52cb. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZ5FN2595738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afc5dbedffbd45fccb5bd643dc8ad4e4ab89dfb97538e626ab39a762ae67e4c. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZ5FN2595740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7671cc6db4832febd521390d75893364163c47ea07ca6e619e32ed1fb98af78e. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZ5FN2595745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc17006bfad008e5cfa3e1b5768e8c69e5ecc4010513e180845d1d789ceec7. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:03:14Z), 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/QZTV32535921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb7311855fd0a76dca83061fa68983602dcb8d57fbffa842c7bf89d452b18a. 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/QZTV32535931.
I did everything I could, don't forget that
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b3f6f37bcb0ef810c2b6886e32c7fec6b12057b51b8a13bc475a4742e33971. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ8A2551060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd158e75bc8f9d1f0d259d6ec35f39a0b945fa761ce400277a0ee7d25acf5b28c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ8A2551072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3288e9320125ed1af27a25a38f60e7cab0180c4c6b0beaac04fd1c4bca232748. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:44:09Z), 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/QZZ8A2551102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0742fa52698ff886235e8ba29d511ec866afde01dd7adad0dfdc6cf8e391c49. 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/QZZ8A2551176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6fbd9f3f455409ff4161cb61bd1dae7aa54105d130b20211cbbf357c81d4aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ8A2407677.