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 0x10e16eea080a3a7373d44637508866a1cdc9bca63bd2234ca840a0159338f23a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a910ae97-75f6-45ea-ba9d-2d90d3bf5983.json and https://artists.proofprofile.net/proofs/artist/a910ae97-75f6-45ea-ba9d-2d90d3bf5983.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 0x841f62f6038cd1b5143c886508691fd399c7971ab29b2ca9c0cc69bfecb7b95b. 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/GBB3T1200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ad3099e996034e2ed82c87182888fff284e5066a7e64905418255d7a55b9ff. 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/FR9DA1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a39dba0b3694966422616d7cf7619b0cf12bfd802410b3dbd658bea1bd953e. 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/US83Z2001829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b622baf34f9bb5e8d47c2fdf30bc2e171729f898b8ca952969c664de5f04a. 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/CACWV2224975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596f0be21bac4d5980af8d416aa2401000a7752ed2515b7cb6c497861ce549b5. 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/GBKQU2110876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc382f671f600c465905209fe7047045c8546c17cf52fcbddf5976cd73a7fca1a. 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/FR85U2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6cc18310f3079a6bac5d104a7b9f4cde8014c200d71cb9bc34fcb67ef79250. 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/FR2X41730998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064e261e996f4e897321a38d32c031c0975433f5a89680de3af593aa7d063249. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GRPA12200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf52f3bda6c9ae7b292dfe3174ce4342f6980784aa0974b1aaa5fe5e6c1ccc0. 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/FR85U2000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630f6dd2792fe3cfd206a40eb21baa4269f4ca7c6b2641755e458aaadb92e519. 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/FR85U2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29213f5d0b4fc5666b02a1591447e35cd7479ea93d2bd9c704102b72e5fc70db. 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/DEU671702536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a1001240d659aac3e4a23ec6ad293db73bcbc7aba79f85f900fbebe6b234a3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR85U2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe650e2335273984f33b3f00f3f2663721ff68b023e2c9ff388540b7945cca7f2. 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/GBEWA1600822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80956f80a2891c5fa34aa95107af60ffc73b732c607a0e4901c7cad774257d28. 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/FR85U2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c94117156fefd19153a2448666cb300b6fdb2b67e6d1381f9c68316a0e893. 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/US83Z2039764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cad58488fee75e09e3c0b280b103c04d162683df176f2a3e2ab5f987125ab7. 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/GBKQU1369141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47afcc9fe723645e42b9f0167814d0f35f22871d356bfbb5068bf6ded8acfa6e. 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/IT00D1401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec713a68bf6d97371275295f4fd3853fe68fdbcbcc331606e44e779ff0287569. 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/FR85U2000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c51709c9a1252187771f00197c3b2a0b3b0a600429ca22f326dca6404c91139. 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/QM6P42022560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e799d188d53409c7ac5b484d05636695fdfe0e7ef22b55eea9b2651b8b12b1b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEH741405629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7b86ac9677c3f3998c9e1e659968cf765dd6d886fdb23be35e939a4523f94. 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/GBJAJ1400668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1ae79f3f090c54ed0b11fc73c1234e177d910b9025c3525657a5e2ad67f77f. 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/GBJAJ1400669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47a4bb3a5f1b73ddabba394e09fa3b72deb43157472a7f94f2edef4f52bbea7. 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/GB7M21425001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31e15b4eeedbb693ac0e75824d2aa9a17097c1b211da49194bf4db8432e371a. 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/GBJAJ1400670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcce9c86217ba7fbc737d15f0ba30d2eec10e3a211501f2340e703cbc76e0279. 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/DEAF71573977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d64b7ad292d61e87a4c1ff1260e2110348f4828fc6f986eac4d74f9d5121994. 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/GBJAJ1400662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff247e55981a7aa2b96b4342c6ed33e19eb13d1b2b1802909b9d6db4daed5d61. 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/DET751300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9b78df5148fac3f687e64faf40f6652adcf0ac62db8a20fb96baedf4e2d9a8. 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/GBJAJ1400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98495558fbc738ae0753ed4364aed835ae9870515a45332c7838f1698d575f5d. 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/QMPLY1700004.
Access - Matt Smallwood & Polarised Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102c1c52152f53b52fa4c6c97ac06a20cccbae4776cb44892ed0182ea18bf852. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBJAJ1400626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438c75889555020a4c9b090066d5ed1a6498a121c165c8f6816ea82d95320d88. 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/GBUR61200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245030036adad172513963682aeee4857eec02fcc9f8bc292834c0326eac870e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLY491400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866bbd9d4f3acd0b482101ecdae752a455ae4fc0201b2447c64669fb987d5378. 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/ITA061300914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb896aa531bc0b53a6fcd5bf6cca05cdc25320d37bffca2306603462db90b8ae3. 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/DEH741405628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9648ab6efb078cf4c32bdbdbf3e8cf4feb061e4fd5a03e3a4cac81fdddbd3560. 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/DEH741405633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e799d188d53409c7ac5b484d05636695fdfe0e7ef22b55eea9b2651b8b12b1b. 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/DEH741405629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11004700e0ebec65fb5beebada06634cae734eb497a3140648899ec1c88b0abd. 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/DEH741405630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb365f5ffa327024e427ce405f10091127f5ee7fbb462377c3c1b2a218c249d68. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH742042347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e799d188d53409c7ac5b484d05636695fdfe0e7ef22b55eea9b2651b8b12b1b. 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/DEH741405629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e799d188d53409c7ac5b484d05636695fdfe0e7ef22b55eea9b2651b8b12b1b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH741405629.