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 0x24bdf2decb9f910e2d60c2eb336098e657d09b13c26ace24a083837a02827bf7. 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/3b7772e2-1f6c-4aae-b508-28e738a90de6.json and https://artists.proofprofile.net/proofs/artist/3b7772e2-1f6c-4aae-b508-28e738a90de6.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 0x228f9c4a805650a439d57c861526f4184764d0c27faf59ca784384fc4810d702. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:57:14Z), 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/QZB4J1818468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf2bc5ab7cf409fb512421c01044b98bb18f8a24af88e4e9d1658beaa0015b8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:35:03Z), 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/QZB4J1818469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0435c890eaff1ff82fe91188ad5c7f48fcdc398a559ddf19eaa8c9100557f8. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZANL1720995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5c9faffeeb00a27610e407cdd881042ed31955e961a5196c21c4d6db174c6d. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZANL1720996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217551abf6facec3bbdf1abfdc21b28252cac1f7b87ea88739cae1c0621deca7. 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/QZANL1720997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c58272c23b2a82cb2138870075bc4a76addb9c0a9aa3060103af691a388c1f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZANL1720998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df474d8ee502499d0108396185ce9e89c0773a2c7af864c04780fe10f10be21. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:48Z), 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/QZANL1720999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43172704e06f3c49ca9f602286f0ecc085b25520a7987ebc97e7bef495160e4e. 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/QZANL1721000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c69966ffea4b5d2f982167c724af0ff71a4165c502b6d6c697504a519ca94f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZANL1721001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aad79649c1a24c3e4b63791a01342679445c5d8d52c5eea567761c6e999384c. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZANL1721003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84954e287f4a43ad5cb23064b6dd54e6ac64626fc0461593b9a84d0f6b56e5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZANL1721004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f0b5c1bc6b6282631eab8640e61c0027ddb0597915ccb599193f945150ce2. 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/QZANL1721005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab88eb63ab62fb4b6ed28d3a1db2dbca0e07fb8e81c3f019d5119a11716f1673. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZANL1734088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecfda55a21bbc7ceccd7db10dd7185d6d0f5cdbfa8330a402c958b9f919201b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:55Z), 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/QZANL1734089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d7de173d9baaca86b3b012314fa1d16840bf0c88a9833bdc26726ea96e389. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZANL1734090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794f19d8a91926edd0c5ee5d49ef60ddb0a2a2beea1482b0deda5e4ed0edc586. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:36Z), 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/QZANL1734091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2309c40563b2e1e332cb99ba5e26cd413ed2f56a80eed526ec2648cfe87351. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:46Z), 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/QZANL1734092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99259514050b54b1f525fe448103bf929739b036bab7479c35c42fd4bfb064ff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZANL1734093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bfbfda24f7ebaf260e1c8d820623e0d213e40d2a86bd4b565f53fadb223787. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZANL1734094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a73ec1413f64a0e1acdbbcd5f0c0fe15fbe0d37bd8c977a25764519955cb68. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZANL1734096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886d3142168e54ed07af6ede4977c08410468f8d28e37d8d392139dd06925e75. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZANL1734097.