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 0x6e8fd116838b5eadabc653cc970bad76012c777e090bebcad95aa825ee4caf14. 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/f5cd951d-586a-466d-a061-6160907f0df4.json and https://artists.proofprofile.net/proofs/artist/f5cd951d-586a-466d-a061-6160907f0df4.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 0xb4473e4643e821e7643dacedf8ed85deded98d2c64cf54d2690ae34e72c27a60. 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/US3DF2226543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9600771c90d088477a13c10775c67e738cc6cc7465b68aa74e15a6b2144e9c. 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/QMANG2460419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cce7a2995dba9cf4c1b92a0fd081b95c057af59a3ce806fb2dd2b0466a28fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2424204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543208eb2e9c63b4574c89d48291455ec263a16328eda9c0a3f2a8f750b41457. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USANG2492255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ad49d231e132fab3b5c9f33fc59f08de9560aaf733b5bbc8b41a57c45e0fb6. 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/QM3DF2459958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15243cd0981906c6ad18e9a2197db7d2a72d6915af5262fda9ff8658c8f33b4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:04Z), 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/QMANG2459282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda124cd3da50357629c68d3cc01b4aa1a0ce91d6f3c4c876d8cdb3c5dc5f51c8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM3DF2454145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17754645abec109cd4fd02169217d839e4e1b9b31fe2480eeb15a4746fcf6f96. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T09:08:39Z), 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/QMANG2463237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940c54ecba9bf100dcbcfd549ca6504e64a337a060daed924d383d91a63c9ff6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QMANG2439006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f09e1e8eb408637b9db15f4f71e9e48550e053adbba4d0986f583c3e0f8af. 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/QMANG2442142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102d777fbfb3883da2a591b43b8ea958b6b7e3e0920d518fc6f947df9600b299. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:35:17Z), 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/QM3DF2411504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b69aaacc1c2be9757a1819c427e89d44fabe1d2e5fac747078be6dffa0c2b42. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:19:12Z), 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/QMANG2459573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15243cd0981906c6ad18e9a2197db7d2a72d6915af5262fda9ff8658c8f33b4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMANG2459282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b5bcc94329897aa15fe72073e348483d52be4a5abbc848c1e8bcc9715ac33. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMANG2472422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca8410fd7434dfe57336c12bc31964cdff12b027812fad4f380a0dae528f8a2. 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/QM3DF2426182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda124cd3da50357629c68d3cc01b4aa1a0ce91d6f3c4c876d8cdb3c5dc5f51c8. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:52:36Z), 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/QM3DF2454145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f2ec54fa5fdfbd2ebb5e487de9d864d72827b4e8b41ba1bd69e928f30c1de3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMANG2419942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f09e1e8eb408637b9db15f4f71e9e48550e053adbba4d0986f583c3e0f8af. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMANG2442142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a6bfb6beeb14dc7cf191ca15524a445c6f8725e7233eead1ad666245e5dbd2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMANG2582560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb5d68115b0cac14e321cfd431ea1a9ce0c790c7d520a0bd4eaa1e61cf01024. 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/USANG2596345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7412fb1062906e2e72eb5e5518f747d0a966fd5836cf09b8c324c7e8c7bd0d6d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMANG2568642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a0383f1ff7f8bcb07af0cfbb99334405afb6635617dc3048dcaa9397a39a81. 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/QM3DF2587297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c30535040b562deb68fcb53d76f8ad8d8a6f37896adb190f26d9e84fd99ac7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USANG2526042.