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 0x041fd53af3d0c5be8500294d0cd9a63b72ca097b4fbf6c9c3bf7c7c8bb3586ce. 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/c606dd80-64dc-42d6-89b6-cc5fbceac674.json and https://artists.proofprofile.net/proofs/artist/c606dd80-64dc-42d6-89b6-cc5fbceac674.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 0xde80af68fdad5303755834329c5854ad2ba3d7b0ff8acb2a7f498dae5aa94750. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM24S1911018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cca34bbd47efed028ebdc66604b5672c1c12c7c13e6433d5fd8a74fcf69d82. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA41969118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9a09e6aecc1c3808eefbc8d438e6a9c2db08487551cc2bd78c40d5ad55bbd3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/NL4YD2100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102c99ee59397960ede0ee22af5a6d83883dc462168b52374b4dff52f1b0c9e. 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/NL4YD2100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0da1730818d26828e7b9565bfd132a9723e1ff57bd0fa6e3d5c1fba47d6f2fb. 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/GBKQU2220284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e8ac9c2a8120c9d5dc7a5c7cba76498488d4af09e07c04a553a9d557fd6852. 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/GBKQU2220285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fec8b26f3bf54ff7ba47fac916f564f4944e43927ba51b65c5949a0f5b138f7. 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/GBKQU2220286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e9bf403448383773527e6a3ff14d655d6d8200bab62f95d2d1da93619da893. 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/GBKQU2220287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8247650213346d0ea0b5b2c438d24054e6c3da8ff9c4751aa27772c2700336. 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/GBKQU2220288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47702ad35c2d186c46cf7b1636f1a7d3d91d431b9d9d2e8ba1406e191e15afba. 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/GBKQU2220289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24803ffc9be63ad88690bc21bbe6a64aca1bb50dc9670134525ef95f87febac4. 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/GBKQU2220290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145806867135f2125390af94eb45f4982a5acc92db0bd5fe34c2a1ed305177b. 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/GBKQU2220291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b2cfaffb6e4a0fecf60dbcc2ac7e1d464d2e136fe40bad75c97e54a622b962. 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/GBKQU2220292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf683712e7f78648ff846cbb8344534e918fa9e5ab301565d1a81a9d4196a0f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:48:32Z), 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/QZHN62296077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc15e7a140dd000406edbbb0780483b1aa52c69387b122f95eeeeabf8e3ab59. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6K2201705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7b8d50470b4ba66a19aa49947f13d589f7d24a149336f0eba2a7e13d86e545. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFYY2485419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d35a35a6720e0bd10d21d760e6f83b623ef1c2a3d8d1cf463dbacf74f6e3eb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:23:16Z), 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/QZFZ42462312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61caaecc64a6e69a16290d9b67b47ade0f84880fd1076a61d235117f493eeb3e. 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/UKZGC2303291.
Lofi Girl – chill beats for LEGO building
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc59f5cd0a1540e1a8921770a7753c7a975cbeef47b17c8a8e8e36cc079b6a64. 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/UKZGC2306971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f19232da0b5df1fbe5b60b7f14da13d06891cc9889424525aacb13ad4986b5. 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/TCAEN1970777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d8ec7a0b167e4106d440f15f61ac6aaf53b1c443e863f6b7e409465e49cff. 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/UKZGC2407071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0828b8ab29806d067cb71592063a8ed3037aaa98ca3ba9c4102a10a48e7d8fc1. 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/GBKQU2189457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b4541b6dc2a975fdc171abdfe3e90fcd7ec485c9c899c1cc11702c5cde15a5. 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/GBKQU2101982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d3c8d07334589cab0bb04110bc9caadc272efd209a034647d967cb85070478. 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/UKZGC2406912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409572e3e9898ccfdc6cdff745ad416b13b42398cbba0fc6fe1887a34c7c7be0. 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/UKZGC2406914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813e464d0d34b8ac870226c19ecccc91d8fa4e837bb2cb83eefb00835401b94e. 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/GBKQU2187930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f0d1072560671b92f55ea25398420b8a4119a5111074895065e7e74040b18f. 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/GBKQU2187937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba74f9ceab8f990b074447f71d0356201315fb4ca719d2b36ff4b5dc2de55e22. 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/TCAER2085168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be5ffc0fd6cb9af10c4b20853a3d56bc1a9dddf7e965bb672c590b99e6ecef8. 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/TCAER2085170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc85fe2384109a60249609969767cba3db166f5626aa7f113369b7ef7dfc3a9c. 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/TCAER2085171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b599cb427b596c5b836586d4dc77241b0d8280dd1339cf35e1ea855c9eabe3. 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/TCAER2085172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbed72b0f2535e074346f71a16a3b61ad6eb53166331761a07903e4daf3ab7e. 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/TCAER2085173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ef01053fabde69746902a1cef2fe1038dba413538ab5b527ff71e437a9712f. 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/TCAER2085175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ec668de287af9917ce5b905639f2eadb7a512b1b5a893864bf884594346e6c. 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/TCAER2085176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957387d5a0e9d14edc778eeca8cea8e1191d51b7a3315e0b166fddf010817da1. 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/TCAER2085179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1d71d4b6809546cf6d38aec71ea88a3c5244356b8f7b5e7e22b27943b3b226. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USANG1924959.
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 0xd88f806b86101b7cd9667fe38cbb035704fe9ed4493dc6305ce6bb23c00585a4. 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/QM24S1845307.