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 0x3ea600ef8d8e0b9000c6c003a7af94ea205fb0084b67d70f18914d5ee42e5a7e. 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/1a955781-b4c8-4ebf-9c44-0cc183e2db5f.json and https://artists.proofprofile.net/proofs/artist/1a955781-b4c8-4ebf-9c44-0cc183e2db5f.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 0x46cba994f85b244d16e454911e2852206cd0212d2ecd9daad515346e17a2d994. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUG10300716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81147bd7262e5787ca35c261612049e9c477138227c1de6ee3073e475ccdb02f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUL10500482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa300fe6351586c619dfce8c05760440f09c59b70a2547f65002540550059b2. 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/USUL10500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0155358eab7178ac42f48f65e0768c9bc27d993d4d03c3f083228cc3c6090f37. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:13Z), 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/USUL10500490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558f131f8f72f28805a6fafcd36c3b7beab17ad4970f3f31ed572719e4b04e90. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUL10500492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8797022bc8848ff081a13663da2d13b9bd2e7462a9c1b5e2973995f7c37a58c1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUM70504134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81147bd7262e5787ca35c261612049e9c477138227c1de6ee3073e475ccdb02f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USUL10500482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa300fe6351586c619dfce8c05760440f09c59b70a2547f65002540550059b2. 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/USUL10500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558f131f8f72f28805a6fafcd36c3b7beab17ad4970f3f31ed572719e4b04e90. 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/USUL10500492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc739f848f76793515f07d6d95d1138d54b0f53eacdccc986d287f3fc55818fd0. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USUL10500494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c76432f285432648377c505f5e78add60ac91c5fee2f849f339e672c35b4aa. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USUM70970373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926906e67cd2d64e22db7827731a032c793c2fab862c21d8e361676dd82c1ffd. 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/USUM70970368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d3cec2ebc952d1d0484aa30b44dc7a6baa700d6725f3627bfb7a2d4cef8e87. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USUM70970366.
Alex Gárgolas Presenta: Las Gárgolas,Vol.4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebb1ca923e077cae959f099f73628963b5155b1f03c9de1e25ecbc356498343. 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/TCADE1777480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1495e5691ea1d0eef61719e6f1df3628e8ee555461f2ccf8eead5fe7e1be69b. 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/USUM70612815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c0b072240bf4338e4dc9f3474c82880544906dbecd60d3fb0390335518d00. 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/QM4TW2029376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437d61cbee16c36f8e6221f4787a4d702b4f58c4fd5d4acdb248299a00ae685d. 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/QM6P42063251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1495e5691ea1d0eef61719e6f1df3628e8ee555461f2ccf8eead5fe7e1be69b. 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/USUM70612815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6124dd45525a46f4372689d97453989090500c0b8fcb72c612a7ce18fa604657. 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/USUL10500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6124dd45525a46f4372689d97453989090500c0b8fcb72c612a7ce18fa604657. 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/USUL10500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c65207623f5dae9539522957619cb8c0a330d1da49105d9ae8d7ed093856b5. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T18:01:34Z), 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/QM4TW2029410.