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 0xf1ca1dd0c8c3b470eb2214ee6de95aac7e1bf127048de86f31ab174e6047300e. 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/dfbd6076-4fc7-49b9-9883-ab182109ea23.json and https://artists.proofprofile.net/proofs/artist/dfbd6076-4fc7-49b9-9883-ab182109ea23.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 0xaedcb0c914ce21056f0825a4e09d5fa0bd18b12448286d6c8684e094441e5fbc. 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/GBLFP1948484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513b89ad34f4cd3cad391f45af274735577b32f5ddb7340ec94d9572c42730ef. 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/UKXN22079086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b2de5d3048601a8b3ecaaedc73beb36fe73d7c2f1aa4613b968b7518574d77. 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/QZHN62158032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e9a598f1af65040afcf7831e50d5c6341a549f524e21bb1f036b74ba9b196. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAFF2075478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce48ed901f510f3a823eb4b0fdb204dd369412c307a2c8c5f0cf665decd9bdf8. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN62158040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e612acece22c9d37f92e0fe5dcd1898c80e89da7149079cab69af889763a8d3. 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/QZMEN2159454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b654e53ce367dea0c212f5d2cade23da082843919445ce8e1f37c45444123b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX53U2080433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c48b70f0b4887599c9cfa668b069b5c6ea4ad5f896cf8a072137d023c8bbba3. 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/QZTB62334979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016883aaf89ae005543d69da1c57c8cb99ac04f257697272600b346984fa8760. 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/QZMEM2291710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123f0311edd71c642f8fd23876e379d3aa2d060dc7b2a3aec91be793c5a3995a. 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/QZWFT2432090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef41a78e963b96e8eba4f2b0221933525945bda71b4de9c172655c497a42719c. 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/QZWA32201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef41a78e963b96e8eba4f2b0221933525945bda71b4de9c172655c497a42719c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZWA32201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fd8f11a927d2d9aa687d365d3e988ddc096bb475c8a0475d0e9f366fcae6f8. 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/QZWA32201149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f275f3a00933a7a07b2e9484b476c90cbf8ed44bcc37b2a73bed4302183543. 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/QZWA32201375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53934f7dabbf58b09056ed4e785db9c2eaf929847ee2b39913b9669de1e91a8. 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/QZTAW2444730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c29b24290736e09a6529b548ad341febc446cab1f3de7b322e4e6a5be64800. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWA32201376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc1aac02a772b07f20f3a8f28fae51af515e7a40acd6421ce8ee8296e70dd3e. 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/QZWA32201377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdac0329f3537913a5ee41576e450e3373aa72c7727b49515cb5a835f3271295. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZWA32201212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b9eabd21b108b33f5ab26df845795e1f7a052e7bd059f6d49f37df255c8fba. 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/QZWA32201378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc425a9a6d9c6e0615a77839d211d7510faf8cd4a028967b644a897ebd8396cb. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWA32201379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08af50e984e12ff4b62d0b56b77072c52e51bdbcd87b2bd2423cb69f87fe41ea. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZWA32201380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd9e2018aebe4b9534afedf5a41aa4f388751bbb27d6761f2c4aaa557758874. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZWA32201382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e87933c8b715956574cba949e103dd0c2d9a9d724047351afd16f79df05d5df. 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/QZWA32201384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2a53972c678f146699988ba4790f7dea7d99d5358d9e4836238da22bb66aca. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/QZWA32201386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e88f6840b283bc62474893aab6079af2bce1998b400b643ac41d05450d66da. 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/QZWA32201632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e9e316f52e69554eebfb8ad0d3429274d211235d837c862fec0394f785e57. 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/GBUM71905240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa260ef0e8c52ea74ef790a5ec88f020c2f72b7c9a21c352ee038dcac0f8f3c01. 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/GBUM71905047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37db39b3ade7dcefdaabf5786f06eece929ef62f81d73a7dc3294d5247a1a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42232542.
Rico Love Presents: Emerging Women of R&B
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4cb4b371906e4c44794d5fcc4cc90b0d4eae6ca248a0272a81a6b8a63086c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX2099757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e9e316f52e69554eebfb8ad0d3429274d211235d837c862fec0394f785e57. 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/GBUM71905240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37db39b3ade7dcefdaabf5786f06eece929ef62f81d73a7dc3294d5247a1a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR2X42232542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6a5a6bf8836f2617b2185c7bdd85fa51bb289f17b8de24aba7ef8ca4531a20. 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/GBLFP1841726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1bd58293755799f7b7c406d2f0527d9737f20b06d304811fbfb1b982c3b865. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2032336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5628af42f7f8c4c25c7db58e3ebafb632879a4091ef849c95ab8fb1da3e4be23. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSXS2000167.
Surface (#SurfaceChallenge Edition) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ba2262e0387587988442dc7168f7816cd87232af656140bc22fe668c0d6c92. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6MZ1815975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8fd4d377ccd9ecd8c8e4f647f518e3d5991f6960df941c766d3d8b9021f993. 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/USZXT2455475.