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 0x1c6730ed58f48bb814a96a45c48980ce5da2d65bf190dfc740090dd2ac0bba3f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28fa0b27-3500-4825-b025-16c3fd319688.json and https://artists.proofprofile.net/proofs/artist/28fa0b27-3500-4825-b025-16c3fd319688.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 0xd0e04cecc8b9c53119000a7c586b853274ab7574e8a4d252cb81ca7793f406ab. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MXD782203461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b8ff44791c4738827fde2a603591b147d2ff5a6b4b11de755156df787a5123. 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/MXD782203978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc956d59a11d90164c0319f68f619f8479b37bb10edb1f2c9d4e00d079b3c4125. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MXD782301321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b8ff44791c4738827fde2a603591b147d2ff5a6b4b11de755156df787a5123. 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/MXD782203978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e04cecc8b9c53119000a7c586b853274ab7574e8a4d252cb81ca7793f406ab. 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/MXD782203461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6292296f39e2066eb46a470224c666e43a5501214cb1daecabf2595aa2cf1e. 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/MXD782201219.
Elebier Lopez Desde Leon, Guanajuato (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b5bff9615abe25f8fe168e7104a1e184330f5380a131c790964b1b7782dc78. 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/MXD782102937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134c65ca0e4bf92364a6635b75b64b034bcbdb16014d314d3e87372fb0ab5219. 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/MXD782102659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a58f2b68cccc8528aa665f94e4e47388d60b3115d114d841c48a537b963188. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/MXD782101537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b873d2aa550fec3f86d11540f15f0deffc1c8d0a5ba0af532779e726549bae. 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/QZKU62000489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d246df48805b7f2293d28233a64ca0ac8a7099ea8219e885cfb22c94569ed91. 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/SE6SA2094797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3898327c6536436ec5e00f8d92a4de8f01449bed15e467df45fda05225385d4. 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/SE5751976949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c71f7929b736cc2aff701590c1ac4c356837d3ba6acc0aae58ed0bbba21c33. 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/SE6I31990836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7e53d91007c2f3d3224d3f0ced148447b9f5104fbd2870321c6e1f7b31e947. 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/QZHN71959888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c1ba93d5995d43489293f7deb89cff1e36261ec98b25d867e297a2a5f1b10a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZDA61967929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b873d2aa550fec3f86d11540f15f0deffc1c8d0a5ba0af532779e726549bae. 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/QZKU62000489.