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 0x54a6f1163d6f3d8aa6777e3b48d4fdbb6b0ed1cf693668e925ab700f9173f5eb. 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/be6622aa-8725-4f63-bd8b-03474678719d.json and https://artists.proofprofile.net/proofs/artist/be6622aa-8725-4f63-bd8b-03474678719d.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 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 0x49c2d14ec448f920d161cf094e1d607b762dfe897432de528c2ac46dbbb626be. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLCK41073497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab135698ffda2ea89b1ccde4013a3ad4cfc8d8c6d5f6ca4f0af146e28bbb6c3. 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/NLCK41073499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f3f9366509d91fdccbc4f100e3ce05e3bb6f2ae8ff3ddacd26f0d55ab5ce42. 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/UKN6K2401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d72045fb439b3493ae6ca2637839d505819fe3e8ca6f87e5a998953614befa. 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/UKN6K2401071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadad9938865786fd77b047bb8ab2f0141829a962ecc8452665fee94d10419c6. 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/BEN582400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e98b1a050aeea7b9712d8527a7095bd0c72f77c7c1d41db36b9818a625c0c11. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEN582400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf35e039ad9c9bda787d098955a61bba0f32d84edad2cc8f6a326be21caf761. 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/BEN582400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac688d0a78af29fcd6e933d7fc881a09b7b4ea8a61b615026a07c2b30ad04f3. 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/BEN582400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdfbf2578300b316a3d57add0fa4d57eab42653904f7dcac169eba9026d212e. 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/NLCK42223755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349db440496f09766ded88beaacf6de8822567aab56c39d7b41f39572a841794. 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/FRDX62301910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15a4e525f8c57b0a168ab0b049589b9b33865b7194e4066214b87c0d632461d. 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/FRDX62301920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1ce576b1a96ce9fc87bf19a8091003f3494ccff97d7ac3e8778fc6e3b83fa. 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/FRDX62301930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfdbf3f4ef02abe8055086255278093c7287ff7f353cf5e0408cafd6a4e4062. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:49:33Z), 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/FRDX62301940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f27c51d73e2b7f87fecd51cbdb4ef738d04294801733e8c971fea4600ddf0b7. 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/NLCK41089472.
Stereo Saved Us - Remco Beekwilder Cold Wave remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275408e32bfd3bf099a6088b3b644b68b7c71a405b3b78e3c18da8a795988c61. 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/NLCK41089475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89efae7a33985dfcfc255b9e5c35b03bd6c9ce58c275d1cc220a23c064256f74. 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/NLCK41069748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875af87e31b941eb67a6b43d3b8a37b30289ab994abe677be9cbf79a0785735d. 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/DEH742312828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e4a7abe3af3c3d7b55a7679658afe4079e8c0a148d79c874cd99c1a7847764. 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/DEH742312829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef0efd748c483e218a42890e7921b2161c748910fe172f1ee8c364c93b26825. 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/DEH742312830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f91d3848c23bc581ece74dd44f4360a96a590b441e2fb40bfb42e3368aab75c. 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/DEH742312832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28456411bbc576be08638bfa98b94c9bacb975e4fc1146bf40726e3cb0caa71c. 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/DEH742312834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7ab2d9c76f96d4d39c21c7b9ebc08c9411c1fc9e1eb1ba5b3c7c32a1e17d90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEH742312838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d1672048389bf4d440fae5a09e7f7d7f2526863379e4f171f5395ccd4da535. 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/US83Z2034118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91f6a6d619a45a8b221c0b98b295fb28a9e37269d96ec44ac4b7985137eb4b0. 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/NLCK42210998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75e9b19d840b2eb999b0867fd5ca4fd5a5da07ef1730b2dbfbd92c7706e3835. 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/NLCK41092266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9964f7f993379f22341cec683bbcf6c8d690800564837712b3c742c4a19ed569. 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/NLCK41092269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad6fb5258676502bfcc63edeb14aca6cf53d956eccfb1f2ce9f255b5f13b86a. 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/NLCK42219005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fb08a8accc9fafcc1d1e5475f138473b6a96a9de68d66c0e91a6d060a04977. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLCK42219007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b5598a22b6b07a9781ffdd0a86df78890e452179b2d11deec2a739d2153dca. 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/NLCK41058561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e5cef183904c2964f210677bf792302c84aa313d562f1e0f05c524f8d0dc9d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLCK41058562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d531e39543cfc37d4e8fa1d863a08a30002fbe7fbd1fa9c750865dc0c3c07. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:00Z), 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/FR9W12132068.