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 0xcbe918d7ed611071e4e0cfaf4e39533dbd766f44119b86a9b871e409d767b96d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa416ac5-9d29-4102-a57b-cf1d8ba8d277.json and https://artists.proofprofile.net/proofs/artist/fa416ac5-9d29-4102-a57b-cf1d8ba8d277.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 0xe8677abb28721c221f72718cdf1a0cbe9e26012f97861ca28d5d02a4a0860f66. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZEKE1927342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12356c9c7f0ae0bde39ca43e5b568b46a1661666871e573eabc716fe2c74c07a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZEKE1927343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a4cd2a0b8b45493a91e2d4765d90c90d0ca44371733f018f61ae603578feaf. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZEKE1927344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82799f93203c035d97bd3efe286be288a62d7d014fbb3f9527c54ffda02aab09. 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/QZEKE1927345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6013a68aa45dfa1b4c934812e1af818e8f94b1ffc81151f4ab0e1432e7c99769. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEKE1927346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df4d51b279a707869677f7aae53803e0aa292043179992a4a76d37bd26b0fe. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZEKE1927347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebcc947d07f211d7f90ca2d38ecbbb97a84aad2af6b43cf9a96e7a2cd2d5e9. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZF452021239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c4682a25d828085b0ad448d62e33e83df1362c2174b53e5282707773a15b42. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZF452021240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2128d6615060e6f93419c8cb1ec1d9051b273c88cf3e3aad6f26bd95248190be. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZF452021241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae7477b52c4e09164246f259e1678ae179d9714200a40e274bfc88d5db1f7c5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZF452021242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0f57a368e3806cd3aa5f0bb99c296528c25e1d0b598b45b8db2fd60236e585. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZF452021243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc2e45c84fd2f688e49d844e78326dd6656e10149fe8320812dff1a3d99da32. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:52:10Z), 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/KSA012154948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a1131badf6d69a399d838f11f3dcf4f61376b8c164baf378400a5f9e130e74. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:51Z), 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/KSA012181278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29d00513f8c9027cc43f53ea6d812a410c5a39d86db08a25a8ef3f82ca384d8. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:10:14Z), 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/KSA012181279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785f796bc7eb5d6196911f0db4863fd051c421c249afa87999bac6bde05d3792. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/KSA012181280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ae27b29a79e6857909a7f1d4c5914edccf2f0b0c2daa7f988a34de791a4c1. 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/KSA012181281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e654790068dc200ffaa12126b2875d39b4e55ea98b186d5f8b0be348aebd517. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/KSA012181282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a55fd7e6fa0bf8afc5016aa6fb1d1dea2c37624bfcb328336a4887720ca8bc7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:44Z), 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/KSA012181283.