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 0x86e44046996efd2cca2d219015628a22b33862f29d3a24dc0f080debdb26b1a6. 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/9fb5cbc5-1816-4b1a-be2d-109675023faf.json and https://artists.proofprofile.net/proofs/artist/9fb5cbc5-1816-4b1a-be2d-109675023faf.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 0x24a091af4f28a7a2c6b98bb45f4acd5ab355a2c8b8d4584f69b57121e97ba846. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/QZFZ31976064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dcb81154c4ada75fcb57f8bf052adc4b0c7db6cc5eddb834cb84f9b57ff44a. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZFYY1960374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf148103f3de1806d992c5741d6a9d4fb53f0967fa6f01047a64cbc8b85d72e3. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZFYX2056418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eecf46da54a977c35ef52007733aa0e5b9f98b9bfaae606b1ce7e40c90d5a3b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZNJW2396861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f75b16bae8b38dbf1942352c9e040d7715bee4e661f1b97873ce00fdd4a4520. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G2420583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a980d2bae760d82ccad0b3afa41d83fa6e831334955e8303914c20a82ad460. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES71G2429341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00888839b48ebb6baf38f9fffe4479a58667a1a713fa285f5ebb16e8d3bf9101. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ES71G2429342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e535faefb654c50fea2cef73394b1f277fdd36b968c23aca74e01ec8e7e8923. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES71G2428236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4136bb461db13f36f731d51bc791aa2d8f8db7a1793896af5efee8aab8256be8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMBZ92574930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30aad81d13bd063d30b2d35a6e87da27837437fc51710e80780561b1246e8762. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:13Z), 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/QMBZ92592000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48d923521b72022989a16a456af2189989564d890866157192172765ac0bfab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMDA62518498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d95973d69e27ad034ce38ead3863c9481d38aeea7f2a009309d0a20c72c84. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QMDA62555833.
Suena WOW - Septeto Acarey, Dilbert Aguilar y Su Orquesta La Tribu, Bryan Arambulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ede28d053bd811007e51c8f3975e24beddc667c7d89ebce599286035d61195. 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/AR5UH2502562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe246d2d4c7972e82f2f4704ccfb4efcce003ec7f3bff001fce3148512609f26. 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/AR5UH2502564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c25c06370680ea0a1406afac7575c618e5e65acda6871a9232d01f99d8c8369. 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/AR5UH2502565.