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 0x295a9a904ec0acdd336d4e6e9708c8b3162bd6be6f2d40744ec9067f1232c975. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb37bd0e-a272-4a94-904e-31d1663fde1f.json and https://artists.proofprofile.net/proofs/artist/cb37bd0e-a272-4a94-904e-31d1663fde1f.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 0xf6171045986c709f9050656988561f40f68b32111b5718cf9376acf8890bc2d3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZPLS2291059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf53c86a40ab60710b63c4f541060cb2508620db949b235c659a7d3ca8b1071c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWR2553880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342251cdc2832c18f2a973f17438cec788ba39671d76051be77c156abc594f4d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWR2553881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32364e1799565a72deafac63593d6653f5cb9ea709c2c62b66e4d700e665753f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWR2553882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fd4724f857d198363f2d1f8b14aa0eac1a7a04e3c18e9f041b927fc31692e7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWR2553883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273f6908c9256fdd0d7d6c56d981377b3c35b73d9e89622b4f5087144a57fed7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWR2553884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796c01b2eb8323234611036f9ac4cd74f1af1639aa1219051a0dae677753da4f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWR2553885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84792c46fe45ba99bb4ecd81abff613733ba2037e1bd8112a01cdc85032ca340. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZNWR2553886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef25da3b17da00124fe0bc5a6cfde5896b0989628298e3d34856c08c0710944c. 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/QZNWR2553887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eb66bb717e1c64272982fa97b339305decc58427bc3112a4adf04fd33981e2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWR2553888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b444f3cd7e1731e0e554cd5285edd80f5c3bef598c17de9040d1ab9bd5900. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWR2553889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb33aa181ddf003be3edcbfef9b0bdc289e80e0b50f07b26bb8fa665e0b73cb9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWR2553890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c09329048fac41972cfd7b1288d566ea7e0dcca1345fb8a907ea4b9cb64da8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWR2553891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcda71c7bd4ec33035ce5d935046b212054b2286f496e684d59b2f90b104953. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZNWR2553892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0633f2dcafbe08c7e79fa1775614495cb328558bb3da925bc820153c563ff553. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWR2553893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62fdbd42ab0a732f049d5af5082c141cbd873d27b33d936de26b4cb5c33c3c7. 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/QZNWR2553894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7205d6255cf0bf9c2ba55cfb16b3c77b1212ce57d7e833918f7e1f7f298e2da. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWR2553896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb363b84dc140e7d2cb2004be2093c3a739b83c85916d02b4adb2fc3ecef5cfa. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:00Z), 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/QZNWR2553897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe3c61c29a898a2691e72814900dc22f704f1e14d56427a0ef9425ef32994c6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNWR2553898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8c2be16f86a45b598616fcf7d53ce306862d150de7b0164e9c12ff43d343b7. 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/QZNWR2553899.