1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xadbb43bf3521aca48b0ccc01206e1689f4b04ec18607d71c93b373964c48da8f. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1eeffb1e-cc7a-4c6a-ad95-1a54b7c6308c.json and https://artists.proofprofile.net/proofs/artist/1eeffb1e-cc7a-4c6a-ad95-1a54b7c6308c.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 → block OTSBitcoinBlock must exist at that height 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 0xb97142dbb700b013839e28dd0752c767c1dd93af01ba18b9bbb947e6c51d8e75. 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/HRA261727605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654678bdd91e9ab847e949d5119fd620d8844ef5132c5563162e9f841c8ddfa4. 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/HRA261727607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df9d49465826a0d62e3ae23f2fefe356fdadee7c3e00cc296066d8e9bd52285. 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/HRA261727610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c006485d8df492f1286b5a1b739732c406a001933802ee6b858162fb9e1962c. 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/HRA261727612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d496f5c2774544d224101c25fbe161987fccb4331c865c7c87a8f106af5161. 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/HRA260812705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd77c8553d67ceeaba91bd7fcfd645fcf1822e2ea78e0dc6bfc562ea2b6165b. 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/HRA260403402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24e5b14a877c5ea40b5cf933d220b2b5dd66d2fa45608412adb7fba36f4f9f4. 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/HRA261482001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6984c95503fd6ef9f167eeeee91be10604dc47c8460146330b088293a8d4727f. 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/HRA261480301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d06b679009513e271206ad7dc825c08b1baada18f849682a1ece0a5122627bc. 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/HRA261380401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c99f6a8c7b5c57deaf4f9e0fe23742cd687a592a40c35d7bcf2ac685f6865fd. 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/HRA261485401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab31b07b4f514cd2ceaaa951342c06734d99d662ece534e2e44d7025dde875d. 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/HRA261424106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15cae647082fe6a9b8f22fc050da1a2dc158777478c7dd177fa944b345ce225. 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/HRA261424108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d181b85cd5017d4b4ee2954abfee96a3c215a6119b717031d6be150c9191c0. 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/HRA261424110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e37a8ba37f26b47f824ade1e32d0fc90ccec9f4891eab69219971939b1f27a9. 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/HRA261481201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29d805e1cc19cf482615411ad53ce72c07f6aeb7151ddd8b8e8abf1eb941fe5. 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/HRA261218807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf850dc57050708de79ff132080e17de8d87b7a81dd3e24dabb5a1dc4a92f8d17. 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/HRA261218809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d262dac081ab27a54280fa8923f74fc72e992c71573aa98a466cce23b9dbfe. 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/HRA261218810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c209d263024e6079c7712d220fcce7a4c8ea469e7f6f8547cadb06b3f622715. 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/HRA261218811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca005dc1bf57645bbb195d4a387d708a0388a6b9eb83a88a07b78f12b9156d. 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/HRA261218813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe864484e728187ce716aee912db234c2089a1d3343f2615eb33196a7d6ecf28. 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/HRA261218814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d8f73637a774ff2db80d92fd7ea91b6e55020fa1d769e96167c965f0bc578f. 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/HRA261218816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3cfe698661bb646714a3781dfe661f69462bc74e15d9c9a125ed84ebe262ed. 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/HRA261218820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf593d01b3aad7f6e78c7862d413ba53e6a3caffead6c47924755206f0674762. 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/HRA261280301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c33e77020bebcbf9e2998595118d318497904ba97a5ae593c917793659700b6. 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/HRA261322402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c5cb6d650cc81548569fb160f7b6223b5accfb3cc84960ffda28fd5d551c9d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HRA260607409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6b3db198f0a4a6b8984f344e142054676b03ffcbb01089e983ae16b1695eb5. 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/HRA261828702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4846a16ee067f3a6cfe31e020328c9a18182287a8951a2c59d46c21eb56e1e29. 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/HRA261828703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e981e72b16be13429208fe2cc068dd5d863605c7cdba74a91b00a83fbcf7ab. 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/HRA261828713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647bb212807da33ccb42a8cf19796dca36eaa49bf1d81d1a8a750f333eeec748. 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/HRA261780004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f08d58425114a8c95a15ae4b16469b39823e34579a8c3e960694e102554341. 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/HRA262031303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb7a9429f87fa1df0b4f42f147d1ac36c665c96d27bfae38fdb077e4b837864. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HRA262031311.
Dalmatinska Šansona (Stare Skladbe 1999-2001)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e830f613d26d1ce636347d1e013582682116c1d7dd971eaef5df6c890a24d9. 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/HRA261013603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1801b3b4b9406a82e1dd693b301e7933dee3e5b6a26abac88c65744f499246f5. 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/HRA261013613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282910097be51925e186d5e96c2d3d444e8046e67c636b971be41a4b3c60b4b9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HRA260607402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb0da56c1d874a368f797ef933bef30d5e37c11c4350a5b288d9f959112b72b. 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/HRA260607405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e72d0cca5e1379ede98a35fc2df9cb198264049ed230f1010c8263f19890bd. 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/HRA260607406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21638adb773a86507faf654cf69a91227dfc523ccccbae262c35c478ae62d975. 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/HRA260607416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bccba5490a44ce61352e22067717e73a70c6d48b885645a8be2081e0eab0f1. 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/HRA231600152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b65150a59aa9c0e8e9b0ee8dcedbaa379abc8dd5c3d76141c90e4994c7f45e9. 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/HRA232300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfa0c82ec5f155ad6bee5ce58b7d98f488a09e79aba95cdd36a1205b123c60e. 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/HRA261423009.