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 0xfb650f100be072e95288ca9beb6703488a9403845df3beebb332a08c069a6c62. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2ad477c-3aa6-48ae-b336-dad50d186012.json and https://artists.proofprofile.net/proofs/artist/b2ad477c-3aa6-48ae-b336-dad50d186012.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Various Artists Presented by: E-HRZN Records
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 0xed862bde848faff51c51b75b0ba9887b9d02fdd71063856e59ce1f835acd9bbe. 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/NLCK42210666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce1ab26274efb80a7dad33b9b43f60b692dcd40b79e5e4424b1563d5110b31e. 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/NLCK42210667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa9a5a063e1346c47ec0cd20bc661856f9e921e38f0e29d4d8c02eabdd30bdb. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/NLCK42216283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487eb77f7e5a393f3fc42fb9491c65e7c577cd03d186fdc7ae5e187da1d42fae. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NLCK42216291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f747f3a5c462576b4e0d33349387e7ea18b51d4c0ac6da2e5d57e8a0f710cf. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/NLCK42216295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03035cfd9465c1c889b844484c3b7b748b8158898197bf2c4e60d24206c62a6e. 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/NLCK42216296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0150bf5d532d86e702dc07380c7d7d4401f169eec09633bf564b50fe312e75b2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLCK42225806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d00df61ad94e5b8faf47ff6b31ebd34f4dddd53b91cf879884636ae663348e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CA5KR2334190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0774c2b35a48bb24835dcb4b15056316aa0b3d1a8c128d5101e3a822d121ec. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CA5KR2343084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a2e362fdddec372d0c92f2aa14c84bc2506c75208653cb1538963ab48404fb. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/CA5KR2343085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d5e636961118429511088791f4183e4e587ab81245645f5f3f2d40b96310b. 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/CA5KR2343086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d4df034e62abbe5947441ded014048eea598ff4de2032aa4c3fd809ff5ef8e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR2343087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc075a483a66d03995435d1e93a12dbf8ce47f21210c5580ce66583048e0aad16. 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/CA5KR2343089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b2d422ad012eaed5ddb24db112d4972e9c709d6384ccca7891f9bdf59b0830. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CA5KR2343090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863c80530cd285509acf439868123011618abdd439e3f471f38a149f0a4913a5. 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/CA5KR2343091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf6c0b2ecf2622aaba5f4ee750d012963b88b8aa96f36704c9e6f8952babd70. 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/CA5KR2343092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaddc83d9f05c51c061d1964fdebf4016b284a7f24382085ea3f5a00e9534618. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CA5KR2343094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b94498e3428151490928e78673e0c992379e92299c4374cbd0bbacb840a0c6. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CA5KR2343095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb099ca4d58cd16480f32d64355d8296bd69824d0bf4b0e0831b10d4b8b32d08. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CA5KR2343096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b92a9231a492100aa82d1d32a0c9d7c81aa349bc35f5a0460095db5e24940a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CA5KR2343097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc652e4ce13e53c483ae3d19fc9082036066f64d53060e76acccb4dfaffeb684. 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/DEPI82326384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9911ecdc61e2e66769d10eef833d85dc24c93da94cc07bdcdf7d429179d475. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEPI82326395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1487b08de220fb2fe682ed6381b2e3e6f0bb8b990446418758e68419fb18ae45. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DEPI82326404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3351f6deb8fcce49910fec136571dd49ebf9c8955d65352e4e979493ff732af7. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEPI82326396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a882ea0470554811d4537ef8cc494accfec31f27347e447cd751b02396d2980. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEPI82326388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd0c17484b7918ddac9fe28a788dbbfe8187774f9e02fb0121590b8b4abf9c1. 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/DEPI82326390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4402bb1044cc5b9fbeed22fae5eb613af04899b44a9557e81bbdd5e5dde45e4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEPI82326385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374c0e8ee3d8026c88e2315a7515d2a8d52cc062f9b71b804f00a0c36b86e5b3. 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/DEPI82326403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65006ea0f85b2a94313c4ee257c3052138f35e2dafc839298b1557b51a02729. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEPI82326386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b5d5800be798b0a9f422317726117a5e2232f8a07d6e7eb158d5c2aa8a5cff. 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/DEPI82326401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1989c70b7822078321422618d2dc4a9e0792700b52dcda959854b37343c3a3. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEPI82326394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18fed1f1d521a6708e5f1b3d743bc07b88cb3d63739de09d606d1ac82004abd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEPI82326389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982846cb74e504794db164116c25d6e0ae9e1c70a260953bb53ab5de82f3cddd. 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/DEPI82326402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5096efd7c87907202cb85c1fb818a5be8b7da176a871dc79309866c7d4032042. 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/DEPI82326406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aa90b79ec754816c4dcd8214ca19633d6278cbd1821a183f4f3e448ccc645a. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEPI82326387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3067534a5b93f4c48a7577a29a142f1152f8dac7e4385cd65ed9feca8be9e720. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLCK42235949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b6d887d604b17088ef00d0343a4d11c34b1ad9e10f6359494f5f2a059cc511. 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/NLCK42235951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88250c02884ead5a77813b017242e6ff578b75b07d347b7022067ea193b3419. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLCK42235954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2a14eaa85a6c9947425b34dd7a65d988fbeb4396b0c64511cf6cf93928e203. 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/NLCK42237089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369204e0c32ce994bcfa15f74c1910a46dd36cb2d88db1d73d02f79374e50f68. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLCK42401100.
One City Music Group Miami 2022 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b5e77061407ee01034a8c3ee6845de1504002e6dc7c3c3f533e023d4af612f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZ5FN2281088.