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 0xe1fbaca1c50ee0e21d8b4bbd5bf2be3a6915766a54e0dc8682ec1e81d2807763. 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/b8a0a438-a339-4d70-9a55-c38b6dd421f8.json and https://artists.proofprofile.net/proofs/artist/b8a0a438-a339-4d70-9a55-c38b6dd421f8.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 0xf5c5f6967e7009ae57c20d9c484f7e3d14b18f0e31d09ea3245fa5f56d6443de. 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/HUBN62100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70e89447c5b9479bb2e5efb071a623d97f6b33e46b90f3f7ba1b1bfc74c4d9. 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/HUBN62100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7740df388d489d05429a0bb7d00a04e69243813026f7b0acf2cfccfbb9b0f2aa. 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/HUBN62100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd0adb59b69746aaa16e438433696c35cd6acafb9e8456bbf13cc5f615b4db0. 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/HUBN62100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9897e341ea412c6ffdef8f75cc94eb18f2d29c1c585a07ee42fc769935282f4c. 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/HUBN62100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb7595a0f5d64fdd3e350362ed0e60fe0e55d6bd1fc361371015720041e92b7. 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/HUBN62100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd0b65c584c9965d01dd93aefa4af7d1207b5764628233f0ce6b937e5b5c246. 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/HUBN62100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8005cc0b4af9111b0125bfe6aa52d8cb2b04081ebb6a3756f5ff34bfcd057aa6. 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/HUBN62100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979e154e097678aa5fa2a52a9f02d4adc80ffa61aa883ad49f11e237a2b00de1. 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/HUBN62100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177c8f0bb4f1dc298647fc2e71f257417e6e0be7118843f90177eba5e422768a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/HUBN62100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99849f462db9bc603170f86b697e3e327bf311c9e36b3b54afcd60a7b0e47cd5. 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/HUB001600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0a2ccca9ed243e9cecb36917a90dbc964dd8d26d51a8405f56cba87caf9043. 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/HUB001600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea7baad94b1a4b592fb787618e18bf3f4573564d6a1d51731a6ffe20b89702. 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/HUB001600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bb1580c4586b4c2282e0a082eccf1ac7421b421defc3790265068f4c636345. 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/HUB001600064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74c3e63d47eb254573e6f342106bcfd2dd6c1572325a08124684704a7f07362. 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/HUB001600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438c2d46e75f0f732cf7855f9fb58394819f4b30a3e0b40252730daec47997cd. 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/HUB001600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0fc72a2b831c9b5fded9273aa1935ea25985630fbc06464a4ef50f332945c1. 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/HUB001600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96612f834a455a2a31ff4f8fea8880d746caacf0e884d625db9db067b2e6d9bf. 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/HUB001600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbd7a51691b23e940e725de6ac7bfcbcaaafa59928961f3a8976e7a2fa1e383. 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/HUB001600063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0ae9f467f9ff2eb0299af4d5545c905255ffe664b027ff2737cbaf4d9d4afe. 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/HUB001600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05693392ae69ca4251fef449881820012166cb2a6df3d1dff98aa4655474c5. 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/UKDBM2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7000f22da8d6f90949938c051deb263df3ebbba5ac730605d2c310f527c53297. 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/UKDBM2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7820736e900cd828d5bb2e41d54c410d5ad93d79cd61df936b412095b7f60b54. 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/UKDBM2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba893b24946086056fa85e785917bc5a1b3433c7191591e3395805e68d0896d9. 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/UKDBM2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a491731a373ec6caa5342b334d8787b8d20b6717ad7eb58fa1baa3e93ba05dc. 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/UKDBM2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b15c994465748603633176563f60d325da304ebb0c649b04af5b975d8941c5c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HUB001900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c87fdada2e7dd2e892573111d699f6a524884f9e4b0c5722b6a876c6cc0d63c. 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/HUB001900008.
You and Me - Live at Leverkusener Jazztage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3919be5c74b4c810906bee631f927f68ebe4f4e6c1dafe7e7fcff27f1f40d205. 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/HUB001900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4957c66e763d46e6fe8aad52630c8a9807bc33c5aa617ec1658bc2d45a8f4023. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HUB001900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0292bbe8995311b3d0c83f7b3419cb438d7c8d5a382ec870d3763836a0671b. 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/HUB001800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f574068ba2ac7bb4185123286078448da62a4d4cc422b93f311efabb2c4ac1. 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/HUB001800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa63afa98c2b27eb42d7bbd2053c269e7d2507614823836ab7be8a1a99143db. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:39:09Z), 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/HUB001800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c675ffa0c1dd30e2789c8c5181579cf63e23d06f84e4617a1520d36959eafa. 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/HUB001800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763783be0b372d8441a951435add7611d8f629d9c13460e37f6f96e5bc3086f8. 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/HUB001800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1563bc79896d5e475991fcdc673c69ead1329a053002a22ccb90d71e8b2fd1f. 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/HUB001800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdb824f7979c4c4507aa3e6ba9dd0ab02985a8a80cee614446ac026acc4ee82. 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/HUB001800002.