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 0xb0ab8b69de39e5311ab1f95196c4c9e3e778acea45c758793e10de9c488a565f. 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/761b4acf-a843-49d4-91b6-168e3deed3ca.json and https://artists.proofprofile.net/proofs/artist/761b4acf-a843-49d4-91b6-168e3deed3ca.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 0x77b56f8e1ec5a39bdad3c83546ec76c8f5f26b2e6d193b470a320a08eaba87b7. 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/ITX4M2300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbd2920c2c0f301cfd618a42f5d3205a84d480667ee99c23a8e82ef2d8a0536. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITX4M2300104.
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 0xcd3a5aca99a2a78d5584f54392d84883fcc01addeb22cab9e0e5b787784625b3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITX4M2300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fbeb3a0b23da77ff898fef11e59480ffc7e8c57f9031bf92824c62af7d3e1b. 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/UKJWJ2300006.
West End Girls - Mark Picchiotti Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758d47aada7133eeac3564e8bd9d99bc2176c50dcd36d5acdaf0903168480bce. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/UKJWJ2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5be53a02551dd9110e8b8ddcf6dff21dabff661b72cc9586705a4f1790f6abf. 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/ITX4M2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95f98d9f4e3513eea5b4b1a12929461125e5c02b6885fd5a9e7ee74c14841a6. 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/ITX4M2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b95708b4b4efdfd296a31fe5975e9c46591ee84646eb931c105a377c21c389c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBLV62422259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde3dfccc0adde9226fa637f22424726f602074bb33b4caecbc85a06ef9a8f84. 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/GBLV62422260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c05e8ca6823f94af35a9a72169b3ead0ddbce9436a8583102446be4516929. 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/UKU932483417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe162a92c3add2956a4ccf9fbdab3505eefecb8f527f2e7a44519f55f6b799fc1. 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/ITX4M2400235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7915a20077974986fcdfbf51b72c8a427a6ef2df7a5864c287b17331de7d4161. 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/ITX4M2400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2681bb4081cf3ed65dcba8d074904e3b55c20b9fc976df36adf3794bbd1e55. 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/ITX4M2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42586125ecac00735e2198498d3544c0a4e76d38e9823451be10b322d2960fd6. 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/ITX4M2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc80f95d293f204429a8271e3f2599f417b5b312f31a8edb273a78353dcbcb3. 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/ITX4M2300163.
Groove 4 The People - Da Lukas Radio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4531ead5042d9ae92273582092a6cc2ea15f0bc526d71061e1cd54ffe84af3. 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/ITI022300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d48cff2cfba67cfeaf56882548321402b8722fa18075f90fd546a26463521f9. 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/UKU932381000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a7c6f9f2a8445ae93500d0ca7eaae38dd98832b977fd5bdce73a9875c6e4fa. 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/UKJWJ2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1bdd214d76357c755468e7a9d9cc22834cff66c0531d52962b1ecc06dfe7e6. 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/GBKQU2365273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fabbd62cecc2fa8c31039a7069fb5431eb60d216e8dfad613d056602bff1379. 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/UKACT2330902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd085058a05d10b1b7a8c65e0fcca3dce28d932c430d0455f84022db419c9ca. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/UKACT2330901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f8e7dce9e584a2822725e22a0d5dbd813cee953e33ab589d9b6cc19fb6ea1. 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/ITX4M2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2ca7804e9ffdd8392255ae4fc0ee7faac327f287d48ac3fa453b0dad1b0f1d. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ITX4M2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f3021d4ead6ec51525b5d58ddfd1b55ac511f6ed3b45390c28d00a28b429bc. 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/CH8191001966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab0a13f139874ff8b1ba6fe53f6259ef3f6a1a81e77bf2cf611d887e7d4dbb1. 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/UKACT2233094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdda712dbe40da5a1a22da5b07768d618e0c9a4a03f3337a009acb1704d323a. 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/UKACT2232870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf20bb570bbffdbeba42b7af5c45e95533be46a8d172dd5d7c9c306e29f42482. 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/ITX4M2200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe646ee4c8c6b22bac2af881d79287a4619f0237463f130fb186f488318ffef. 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/ITX4M2200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62e52cb314d4377ae2e6eb4cd5fc204e4960353b9586e97f93f65e34349b8a0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITX4M2200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2acbbab8de88f56d6e7246b05299fb700ce3cdccc984b502246eb595f940bfb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITX4M2200092.
Discovamp (Natasha Kitty Katt Vamped Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24df127e0794cae483002997af4b6e9f80a453a28827741bb2275783c03a1740. 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/USNRS2242196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc716feac0839bbc97c5175d280a40d1d0bb14f587aec44fbe55d99d010b80cda. 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/UKACT2230890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6898873e3e5cb0467755c7477fa3fbb197f5d56cd53da03a1243658bc0dba662. 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/ITLQR2101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08929dddf8a7ccadc4173f7358076e8bedda770b5ad1bd8ae38fcecf358347d. 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/UKACT2230184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5ef6203eb5d2ce319636e3f649a192afa1bb198060c0879cbe50711a7de152. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/UKACT2230183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fafded226eda36b7f294f2a70869b84668f08c98c9487a2c471531c6ad6c1c. 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/UKACT2132759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58df605957cb2da25ad7a64fdb724055c89e53af5bffa20f26f8dbf8090abc. 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/UKACT2132760.