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 0xac2c3b596b2d21e6b40ed8d0aba03df08411ef8de6841792440897cae9bb6dc1. 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/0ce9649f-c538-44b8-9ab4-32529f677ddf.json and https://artists.proofprofile.net/proofs/artist/0ce9649f-c538-44b8-9ab4-32529f677ddf.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 0x1ac78d13a567cf23e06a78d0a72e7b57f784fe518608a00007cace7d02792563. 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/ZBCKG2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d3fd4d8d5303859270f8cd533d0555db611b0e247606869a18c467046d5dc. 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/ZBCKG2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c1ebfafcde47bac366136777b320ab2ca52ddea5e009ea8a6f9a771748e55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBCKG2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abe460ac5da5af69059579cf280ee3809333190b042194fd3e3582d7a0a94ba. 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/ZBCKG2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440a92f9d9521d35ba7cd4414ac23555074a2ed3fc0bc1f355f036a272b7bd28. 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/ZBCKG2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ba8d023aaf19ad4a09d01451e5c021925f68ff8a0337f48d07169688db8cdf. 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/ZBCKG2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa174054b6826d6c553d0570cb1c44c9686344892f064f29f3e9144693bcce13f. 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/ZBCKG2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189aa26d62320aa1bbda0bb2369dd4607ad2e5fc7fc36539dce66c5d8021f110. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZBCKG2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3e919fd5defc6bc19b10575a55b5f8e9bbe80d0b0b6f8e4d97360007b2479b. 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/ZBCKG2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd7a7ef179e5f79a08cea484171d6320633565b20b444be04c6fd6870e2cda5. 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/ZBCKG2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79b8697840fde5514279c34dd1f8d56f723cd1f38575d3e7062cea4dd3b41c3. 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/ZBCKG2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c199665fb20b202057792b5ffe701ad1108201d33190d781c74512d978dad41. 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/ZBCKG2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd24a526432d3c67dfafb9c6d313e194e605236dd68a5607bb56603f0e0f24d. 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/ZBCKG2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb29d7f2872b2c0adef34afb562d16bed8bcce95cfaf71ea301a573b2289637. 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/ZBCKG2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9a56736e49177ffb5d1a6b313960319e6d6d3e641ba99bd22ec2832b08436e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZBCKG2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128020ca032ff4b7fc279ea67f664200dcfd90acfcbdb6749d94abae2eec6086. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBCKG2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfad110de04941b766eb66355c558f1c978f819aa189dcb7a9bc49b1d2d5690. 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/ZBCKG2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7226225fa1a9d2085ad05c3a2f44607087b70ff19de1d539ed9f0f0a110596. 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/ZBCKG2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6456aea1542622bc439cac6abad66c225925d549ea95ea5d34d4b759d9f148. 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/ZBCKG2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e486fb95ea0cf982ffb141c2f8d2c4dfb7ca53812e99fbea59f1bcbd2c07ef8. 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/ZBCKG2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44190213cf74153f4f75544e367e030fedc8bbf497569c1dfafa6be51e78cdb. 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/ZBCKG2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd349dbb2f494d25d9c7e70877e4e1a4d1d575d764122964c60a2139240068ace. 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/ZBCKG2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fdfce96940b7962eeeda99c6c078e2158c80993ea8a441d908152cf119ec2b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZBCKG2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40610d335ae84b18e5f8577fc1a1bc349dfac85eb884fed7fe3df7ba9466ce6. 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/ZBCKG2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b99a89ed0d7d875bb92a8aba1a0b9efed2931476c1e683de0f7062ffd8aa1e0. 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/ZBCKG2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c59e1f2cc4895bb61594aabfeb0207ca6b6c05177efdba72ff35a78926c366. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZBCKG2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e7f9afd3ee3123cc67a78bfb2a91051aebc8c548585f7ac2d047b4cee4339. 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/ZBCKG2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f837b067c4702bbe4f24579372b6334921ef149ca624ee98d3488171e2e0b0. 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/ZBCKG2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8337641fb9ebb073a5f44dc041b3b87a7252bacc31ecba82e3bcd8715c0898. 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/ZBCKG2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a1996001439e739f047ff189f0da3d03d61e29f669f652ff0c16a47050b1fd. 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/ZBCKG2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e8778d884633f21ba80065b9d9fcbbe8e16d7a93e01c9d43744442a9a6376. 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/ZBCKG2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50377f972f0beb85a52f3d7e93fe7504e6e4fb4a99f18b8b95dbc76d3bd1e8d4. 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/ZBCKG2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bb27ddbf98a2e8e85f120c6883fcabcf882335a0f542208b24fe144f5673c2. 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/QZES92142036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4c309666841c83670aff7029fd64192476876475e7c1ebc0bbf1d92252cf05. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZES92142039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c08122579403db66df991a06966c76949fa00571553d687c868ee3761fcd4f. 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/ZA56E2416253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189aa26d62320aa1bbda0bb2369dd4607ad2e5fc7fc36539dce66c5d8021f110. 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/ZBCKG2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45339f801e44568afbcd28f0360c6eacdb69208842799336f48e0536b124b004. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZBCKG2200012.