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 0x851b8cf27949e8ed568b026045c2609ee44924b3e91252be3032a5dc20f68bd5. 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/6c1178af-acd2-4374-9a23-2ce42ef966a1.json and https://artists.proofprofile.net/proofs/artist/6c1178af-acd2-4374-9a23-2ce42ef966a1.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 0xbb7f4ceac21ca7154311621f7f983286061b398ba6afac3eb5c3c3294b6199a2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ42147276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773c80de6b0567a2ddd5e1a092193c8ad9d56231cb8dd4c3bfbbff5e1cbaf41a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QM3DF2161044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716b2881cf7e1b6adbce57c694e1122042a0e2db63de2cb6888d5ce99292a631. 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/GBLV62122721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d7508a7052d22a8e456cf076a42c544c05bebe772de1c1d4d7eb5132962e0e. 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/GBLV62122724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8758b581a6bd00bedca92b8f3bad93b12cb363e6fdda1818f2afc053daed6b82. 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/GBKQU2262873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d990e5b3fd4d5d684a772b995fbab6cae2e4419a3519fc0570b2cd2b5ada89a. 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/GBKQU2262874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e002a7f0cfe6fb42224769b31a39e45af70c3c3dcde68fa244300b3285500e. 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/GBKQU2262875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6c47b39f8d35c9a7606a1caa98a1edafe49f13e00c1db069f1a68f454fc516. 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/GBKQU2262876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe62337ac43b432c47aa4fa35d284170d76d1c4c34e9cfc3eb63430eb45f9264. 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/GBKQU2262877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7169bc3f96dc0aa2f82e5947ea3b073d029dff6567564f455423003cd491d63. 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/GBKQU2262878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb60361bacdfb0070ddb7e3a4d5b2bca91c22fca907bd58985782f361258d4. 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/GBKQU2262879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51436b33dfdf00681c8b9f05c30e2b9d07f886d4441fa1f138ad1726bd7fa57f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USANG2201819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48e68121e78a24488b1f42bbccebff8333aad18fc0712cde9673b4a2edc74ec. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/QM3DF2273077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2409e650ad1afa84736e67e804c181c4458ecb6c17fcdcf50b41a26251accd53. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:51:39Z), 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/QM3DF2273079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac104dcca6be275793d23d908e0aa874581f3c6a6cfca235c49af716923bfc83. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:55Z), 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/QM3DF2273080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b968c7e5bf0bcf8da21ac9def08083394bb25eca44c413cb2e0029ea9889f6. 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/QMFME2330951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2564d25de92cfeb03e8e6765bbed7159c17f03aec1933056b29df4ab161e571c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/US23A1570259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa2b3660f06d2ee2bb5d6a4a91d5e0cdf81d1ecf3db18b0a8e060c5fab1467e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US23A1570257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fe0a749cd8bc3be82fcb27760b7d8fab67e21be0ef5a0e6669bc290d71606d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBPS85114598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf864fecc754a266398a5d9109f031278a0de0f61d5779156a9682914715c5d28. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/US3DF2498284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a2e6a040f6968ea5708ca64264ee8eabb3270908e1f2e1b0608d92821753d9. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/NLX9G2400400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11bf30efbfdd0bb6995be29f11c561a32869d0877870b340e991e1d64d8b9c2. 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/US3DF2454297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41330e43e121e6bb1a4fbb366fefac92355c64abc7b1f39d937572d2347961e5. 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/BCD4N2400143.
Lofi Girl – chill beats for LEGO building
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf244891d2ead33ab92f4f834ef25da54161c80e3d5cd0835985e58d32f6e8eb6. 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/UKZGC2306962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63a907a8e23f1eff16d13a142e43f775f7724dca75c7983faea4d1766cf1498. 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/GBKQU2204519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208cf416565ef4473de6b253fb576233ae284584d29f40c8a8a7c4af650d2912. 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/GBKQU2139464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078e81a71fd30697683224de3c0e0f52cfdab1945518b71711226b3bef28b19a. 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/GBKQU2129379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe634a88e738511429234469e6effeefb708f9996504efdc5ee2142a09c757d10. 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/QZN882231962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf44bda13f1190a38eca2d67ea93464d195814b4c9f1212b3454ea4d39816b02. 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/BCD4N2200003.
Lofi Girl x Chess.com - Chill beats to play chess to
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670f85404833640920d4958fa90759c29e6ccaeafe0eb324033c28ed304f2c1d. 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/UKZGC2309079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a4b27caf6f44c1f407d0e647250d14dfa7743c010e7e60cb1324dd003e3b45. 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/GBKQU2197726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4541b4e8ca5dd64d0cf3cc7b997fe16c9352e30404d0d6abdb3009b9a1679d1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM3DF2254220.
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 0x898b1d5f8775b4aaebcb8f5506ce3d8a7624d9f7a7c7c3b45a1a8ae976f20098. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM3DF2127431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1c935638d71587f839d6e4f13d5a7a9aecc908c9c929b0a49231db4cc9f1ec. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM3DF2168621.