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 0xc59948fcb4b16af40f2195cff0984a0f974bb3f3851fefe8723e15bb6a6312a6. 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/39673c3c-7227-4933-8fc7-9e6f659a269f.json and https://artists.proofprofile.net/proofs/artist/39673c3c-7227-4933-8fc7-9e6f659a269f.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 0xf990429c0cfa77c6c33c053d7acecb9ff678d13f99af3124515619fd2be6ee86. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ2297628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f6df724d2b931bbd204fa3ea32d0db489da0a5294bc5b79197e1658c7b176a. 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/USCGJ2285553.
Popurrí: El Primer Tonto / Como Es Él - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9325e54eb8c960c074505453e5307cde237caab34dbec2ff16686098f4781c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USCGJ2285554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07e7ee285fa576416d3088d2ddaec4203ce2c8d0d3a1e76aea8c8b46fac645a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:01Z), 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/USCGJ2285557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31851f2e4b70218db894a7540480055505b052e24cbc9320bb693ca6561ec962. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6N22248092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e225f863a7f3f9373162c51b752869e56a57542cf2183bee0061c70dd2f25c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM6N22248097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafebe0c9a35d63c8dc211d558b9f8857d7ba9589afe88368217018f346a204a. 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/QM6N22248099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b0ac6df8658ab616f685665459c901c551f39bac57b3c906412002d76b87ef. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QM6N22248101.
Popurrí: Pero Me Perdonas / Ni Que Valieras Tanto - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859f714b38a7ba7f775b4fc24692138ed081793807be1f7080434f0a6abad604. 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/QM4TX2358322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da00b9dc2eeb2607bedc1c9ddb0b6dab9b57d471b051552806562ef82505062. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM4TX2358323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e477c3a5d7288add551531f80cf90f875e6fc0f5163435c4a5f0bb1a962474. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:13Z), 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/QM4TX2358324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb5e8beda5245cb2205eb2ee24c4e26a5ef94def3f2424896855821ec2c592f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM4TX2358326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b1d2c2c474b084872d3a16238ffe17b1626e490de661c15e13907ecd1e1b2d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX2358327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125af28094641a585512f0c3dfba64357247408aae5e00301de65537a3b4b523. 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/QM4TX2358329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e030605ec15a84ab7c3af5669562b61958014156dd3c003bbb5c4a03fc0353. 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/QM6P42354482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf990a82301db806032a5d9e5a5269f20cd1258dc54fea0a5a63cd0349764e80. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM6P42354483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf693afc335ada54e736c479190684638a4756840e35aed35b0e1b6ec8f9a0101. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:05:11Z), 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/QM6P42354484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092155e3056b5f1336140661aab6dfd800ec50e414a5e180f1a90c7f148755b6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME2387067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6f5b404b7915adf1cd7eab5061b74ba03d57fa9f931eedf4441dd1b3bd3e86. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TW2473029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a789fe77ac811a1e5cae8c748aa09dd27f3a4183a28a706931986cad3a4d618. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QM4TW2476039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe495851213895a3015ccedcae264cc74a190bf92db4c94080c9102485547cf59. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QM4TW2476041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c35bf1761e6f83217923ba03bc86ba3c2c33565d74f5d1c240f2a925d09fabb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM4TW2476042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165bd270366c34de51ff203db2204ef7fb0886209e4ccb13186ab1185dc5fd18. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW2476043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333815d9a8dbfdb1844c97526bb55cf1aa54b8b7c64afcddc9e66d84be3673b8. 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/QM4TW2476044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4763fddcb4fab1b4fb75a14373abe1bea63775701f2e214ab4b9ce9f6fcc0a46. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TW2476045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f0034a5957528d3bb483a60ad9cea95fc6e69713b320b56c5e3b36048b69ae. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QM6P42412577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3200d7b934c9dc723cb3e3b28f11e6cba6f832915a71a73de638a73ed1677a62. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:12:15Z), 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/QM7282404914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba33fbe0d635962e1d7565a8f44a1f1da691b20c907dcaa07be00bb7db58e3e. 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/QMBZ92567274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2247357a2549f4af4e55c6894e6d143de90b3cca757fec29a4dca8961692562d. 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/QMBZ92567276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0298fa99650fff9f12b89966670d9a5a9c7dc790d15362f27d7bc3eaab1cb7c4. 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/QMBZ92567277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cce28e6e325de688c766dab417a2c1edc6e501227b235b478526ff2db77ca9b. 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/QMBZ92567278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75e84533b55c25a3141badc89218794383ac5874427b0aaed14bd5beb0f4286. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QMBZ92567280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eba61d99620699f92bf20d7f86e3a14df9f5f93c3804842883398060aef3178. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QMBZ92567281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d7a36a4150bf8bc9c4288b4bffbca5262bc9b388ef1615db779adc15e828c8. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMDA62552859.