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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c62d624cd769ec2cec959c4827a01934c4e0b3adb8fa768fe78babc549e8947. 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/158c4366-dbc9-4d7d-beac-49519795f579.json and https://artists.proofprofile.net/proofs/artist/158c4366-dbc9-4d7d-beac-49519795f579.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348ff907ec47efca6f69bd130af0a69f7e8260ffbe1660d401dc1e34815dd42f. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZNFJ2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cae68b2a356344b2afa6c3dadc270bd9cb4ad3c7bad731077cd1098a641bed. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZNFJ2300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16be96b919611ea4eec57e2ffdb70dd7537dcfd80826f536c868d8ad65d78e91. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZNFJ2300917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03c9b7845f552f366c162130be897ad12a85518865a817ea6af5272b24d3361. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZNFJ2301637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0067911ac633e6be62ea30291c69957e66fb14ecf69b001a67a4c7847e0455. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZNFJ2301674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0826d6bd2704fedf9fa6efcf9ffd1d3a948a66175098a63b83c4d6fd18fd55b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZNFJ2301827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9e90e181185c914b217576eb7894410a882717ef11ad382e59c88e26e475c0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNFJ2302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3df7d5857c52fc96ba848220430e8ad78767bee71d4bfd1f82270cfb1158d3. 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/QZNFJ2305075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefa4dd712d4c18edc58026cea24d907efc6755d60f2012409343346136032e0. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZNFJ2305811.
i walk this earth all by myself (Techno)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d79d14b2b9db9b52e360775ba351988eeaad095ffc0768011c93faf04b91c3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNFJ2306357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04a59e61c6a7f7cf3b4b3a1bdfa0ed0389cef73f8e078ae37dff3db9634fd71. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZNFJ2307080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b1a2fee9305b5b128034e3389a8665a3974980d18b5ff9f366b141ac30ac4d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNFJ2307709.
Gimme! Gimme! Gimme! (A Man After Midnight)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f01fd35e6a49fbea78b5a33bf132e7861f8e8c425e5cc0d0b5be3ad795186b6. 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/QZNFJ2401064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37a8360a1e51afbf390d5e0d7d6917b37696dcbdf1c77cc9cd98dacf766e3aa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNFJ2401196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbe67c627382110c7c73223377f484cb06b502b97bbb868254e66542bfcdc19. 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/QZNFJ2402121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a575555624f4cf838e630a9db379d7f4cfff8c7e8e12631ebbe0f21ff34a6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNFJ2402586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749991bc8f1552d29acdae9d18b1bd79ed4af32471a0f638555ae2e6eb43787e. 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/QZNFJ2403195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8aba5e5d844f09d9dd1cf97199ad96ecb32e337e69698a4d45cc0f72621f7a0. 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/QZNFJ2412607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c93e96100dc6c0bf7bd4c121f09a04a3cfd2fe60a08fda01722a33a76ac4734. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZNFJ2412718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc044dcef155421d24adfa0a5fba51cae50aa1669ddeb58c6e75a0a303490729. 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/QZNFJ2413420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ec02e38f98f8d9ec9420003c77051e7d42e1f69daf784a3f907a650dc12d7. 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/QZNFJ2415092.
i wanna be your girlfriend - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37a7a1a1701bd822113258ab3b49eabc62ac5ac794bed22ba7bd7327d06a2c2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QT47X2500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc426b2c31fe3c872d0ae87a81d5c25bab673bcf2bc0da9810ff79ee67a95989f. 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/QT47X2500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03796ad485f05a2413197b687b2a75ff6438ce7e05f30da0dc753f91c461472b. 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/QT47X2500236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda682747f2e936689918e1026c02b1bda648a17a11330d82b5fecc036250fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT47X2500254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be7d2b6d07c0497eb53e7429dc692fa918ba868dbf5b3c149e9e5858800bd1. 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/QT47X2500591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f5a34cc59dd53d5c6d72c19a37ce767b404f0165db999d17ffb5e56b0a8f6f. 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/QT47X2500995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e190826d2111ccc58fb18495df9bc2693cfb7947569e2f8c32f4167e0c6496. 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/QZNFJ2301283.