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 0xc0a8daaf01d504fe6b15dc540d1848d6b8a15697c865e0d33b8dbb20b03b976e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07d29b3d-249c-4b0d-a533-2dad5a40338c.json and https://artists.proofprofile.net/proofs/artist/07d29b3d-249c-4b0d-a533-2dad5a40338c.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 0x8de22d455dbd5d2c5d95e90daad85a3a72f799e763b642cca6d40527c0cec374. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/DED579402940.
Stoned Faces Don't Lie - Oliver Lieb Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc73e0c4f157f9a2923e488de50eac6c98c96698dd2f215e62f3adf3928ccfe. 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/DED579403090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8712921a6ac8542edd4fbe443b3faab6a63886ba372d3414b6468176370254b6. 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/DED579504280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8091fd49b9eec1dc1592fae7ba460241d1587c1fc23ca7038455f986b051c1. 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/DED579404560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0574bfabdbca59b3ca72e0fa8a8de068820ada6396f5d4d7fa5d4b02dc2cdf1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DED579604450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d46c519eb1122b63c60a9e6f4baeaa9f31191a1d9d31e28ac5408bae1eb42. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DED579706160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf058b3d496e383661c876f1bf852c04cfca9028dbfb4c3849077916a2d5f1701. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DED579706170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c101ad3a4228d4458d59ff038e8ca562e3777a3e96f17f6d09c40325765594. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DED579608860.
4 Remixe Für Andreas Dorau: So Ist Das Nun Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27a4aeb581a7be3d49205bb1e547d975b75f4d7e1e60a1832867767ed757149. 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/DEU670400139.
Hauptsache Ich (Retrospektive 1981-2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c56c86119a2d781101fa3a04d25e00b5920921eabd644944149e4dbd2d534b7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEU161904644.
3 Remixe für Andreas Dorau - Unsichtbare Tänzer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06c2fdcd34dd99f7b40e960cadd14c2b9b785b6e6cd32e8e627db3771f49625. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEU162507128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06c2fdcd34dd99f7b40e960cadd14c2b9b785b6e6cd32e8e627db3771f49625. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEU162507128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df167fd7c573e0409b93c8977ba6904049db1d2236156329cf4ef5bf2b44d84. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEU162507129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebd36bda3444c29d55c028bca87d03963351a6e9cab8b197891b59f8a24f4d7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEU162507130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe144af79b607711d8cf84f0ead15b5802f659f226f38e343967d32b5fcdf7746. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/DEU162507131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e19842b6bbe1fe1333a80521929ed1d216dbd335049cb60de86279486863e2d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEU162507132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eb21b6bfbc18bc0c008d2f61231ca7312cc81b352817aea84487b2b498fbdf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEU162507133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625140abf4fffb55e55928eb2600e8cf427e9e64f72be8186254657286be4f90. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEU162507134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9170ee8460a1a2ac42357d60fcdd731ae172230158ead18d62adcd946c7bc6. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/DEU162507135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cc387542f98262fc6a6348a3a25ae46fa42a2b269baee95823226d4ac3d524. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/DEU162507136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ca588e5f50b7860b472dde1e26ea17b509d3d7dcb4c03c3110740a15963ae. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEU162507137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea6efe991b1543ca79a702745cab007a38aa31c95d361b50e1802947104cc86. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEU162507138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b7eb97020da95adceb0c5b919e749a455efe19448c00617c9366f37867f461. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEU162507139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0574bfabdbca59b3ca72e0fa8a8de068820ada6396f5d4d7fa5d4b02dc2cdf1. 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/DED579604450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0574bfabdbca59b3ca72e0fa8a8de068820ada6396f5d4d7fa5d4b02dc2cdf1. 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/DED579604450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce86cbfe3d6ad9e06cfc04d64e9f821db1ada7ac7557ae2a0bd0b4b6f9a0771d. 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/DEGQ12100071.