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 0xa7054eb8f48ee0b2fa7ddb4aa404577339ed9eb616ce69fa122b9de9ba234344. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adda3700-7a8d-4aa0-8c22-e78d9169c85d.json and https://artists.proofprofile.net/proofs/artist/adda3700-7a8d-4aa0-8c22-e78d9169c85d.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 0x2634c1ce017a9658197f1af652549231e3b214ccd48a7a802a523367a1c65d8a. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZDQH2161305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56532ce6f85ae56bd31a45a1d153ac2972586c7693f9ebec0a399e80f3a64e68. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZDQH2161307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d5042e658af75699095cdda40ff7ff8b9d66ef4ceb1f035ac66253924eaa39. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZDQH2161311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef0d8f0138445766cd162e91a093d56eb40ccb83ccb9277ec5bc4662a287819. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZDQH2161320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e39958b31aa9062a1a2dee78dfc862604fff4afb9917fbce7d295086a38eaa. 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/USA2P2266201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c26f119beca7af7a3087884814669ed5caed690e569797cb9cf5f32758ceb14. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/USA2P2266204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3958378acb1af1daf1811ad9f28e93334589ecb07042de084fd8b7e665c35. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USA2P2266203.
10 Mil Rifles y Juanito el Comandante y El Pato Nada (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d233528e686c7f2687fbd630663f162d916ad66273d8f317fc4da316ff6c5d0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US3DF2564335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444df7e955711ae86dc4df68a4f2cac97c232b143b18c3c718799f41ceaddb50. 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/US3DF2564336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e529a6b0c482f7c4a3e1ef43fc563e5d978dae6ae71d4e3007fdec7b039d1a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/US3DF2589316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc45eecfc6f98276ad60dccf66f71c6a2d148508d0e2260ff94063d180524b. 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/US3DF2589315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520bda732c6fe089d0cdeedf7eb27ffd05c5ebd121e1ce8c31098a81cc32ce19. 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/US3DF2589311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f998712fb746d9829dac6b3e7ac147b6a8db466e2bd8bcd4e90d94af4b6a2c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/US3DF2589313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106e6cc7460dee38fd9d0fe38ca2276f478c5a81df131446b1bee65e6238b4f9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/US3DF2589306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b7d2f5bb5f8b1725738d01ff05e805827aa907d2703c99aea1b8884b4a8ee3. 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/US3DF2589298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54cf9235eaecd20aa8cbe8046f7d9c8d3d664c094601271d8ebcc6799ee855b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2589299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5764dc07149f39b14a89f8947fa3aa1526c78482303db8ed5f17cf954d75a4. 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/US3DF2589304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb370956fbd64bb23b5339febf95bfd85a6503038d33a557d0b65a300f2356d1. 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/USANG2519890.