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 0x8408fc1886c513ec99d8f8e03e70cb84aa9e6878dafe69939b3dcab74f900690. 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/7c2b4344-a6de-48da-af27-a7cad37ede75.json and https://artists.proofprofile.net/proofs/artist/7c2b4344-a6de-48da-af27-a7cad37ede75.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 0x93734422f534918730b1abe605b39d9ecf313a3fbdec6356e5ccb4bab87e9dfd. 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/ES71G1406788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ab3403fc12050be72d9e8f99370d5008258432762d6c10ca8ecc032a8706b8. 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/ES71G1606219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ab3403fc12050be72d9e8f99370d5008258432762d6c10ca8ecc032a8706b8. 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/ES71G1606219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf990cf3590da0ab998f0e1f8f6604af592850196b4fbd3044e229a27e9b018. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/CLNE21700934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cb7d44fa4aa7f6791af6269d4c2f92e3c5eff0c51c877227477e5d02d1fd89. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/CLNE21700936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16ed3577773ae0216f1761ad53329e167557bfcfdda767a5ee9ad9fbfb74ef1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CLNE21700937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afe85c396ba817d2ab861fcb304dff1e17b616b365cd2d4a7c672d452cbfda3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CLNE21700938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf990cf3590da0ab998f0e1f8f6604af592850196b4fbd3044e229a27e9b018. 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/CLNE21700934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cb7d44fa4aa7f6791af6269d4c2f92e3c5eff0c51c877227477e5d02d1fd89. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/CLNE21700936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16ed3577773ae0216f1761ad53329e167557bfcfdda767a5ee9ad9fbfb74ef1. 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/CLNE21700937.
Imbécil y Violento (En Vivo Teatro Cariola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bdf6ea5ab93c6e8b0d4fd3de9d04b65ed2daa638ae43123f3b98c6a81c7654. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ART0G2002180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2169018b7ece343375e25a3b63dca0bd3d2e4351f33ddd4fb0b6bdea3b1668d2. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/ART0G2001020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122b2c37f6e951dea5fc2e6ce1d379c069ac0ea1bb2f35715f84a16ccb282e56. 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/ART0G2002794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bdf6ea5ab93c6e8b0d4fd3de9d04b65ed2daa638ae43123f3b98c6a81c7654. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ART0G2002180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122b2c37f6e951dea5fc2e6ce1d379c069ac0ea1bb2f35715f84a16ccb282e56. 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/ART0G2002794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4653ed04aefa0c23482616ba254c3620a27c3d674e7f5c23805a1f927ec2e4bf. 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/ARIXB2309860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7295da820fe2412fd35ea7a16ed1fb11d8b42dbe7300d07f7303c0a38f76925c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ARIXB2310081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebd63eecc03718ae4455608e1d9c02c6d7350ec1c3ac72545002b236f1a2137. 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/ARIXB2310082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10447c03269c0f582799f4771dd24874d477173e8becf56ba0c03dc533ea8ced. 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/ARIXB2205891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c10a993a366c14be7cb0b94cff270de5e2766aa7306eeb73c91bf200fddf373. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ARIXB2310084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4653ed04aefa0c23482616ba254c3620a27c3d674e7f5c23805a1f927ec2e4bf. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ARIXB2309860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2fb5edf689274364cf556160d85f56045916c939680395e7df4975c13f6e54. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/ARIXB2309395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebd63eecc03718ae4455608e1d9c02c6d7350ec1c3ac72545002b236f1a2137. 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/ARIXB2310082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10447c03269c0f582799f4771dd24874d477173e8becf56ba0c03dc533ea8ced. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ARIXB2205891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c10a993a366c14be7cb0b94cff270de5e2766aa7306eeb73c91bf200fddf373. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ARIXB2310084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60caf3ae8b716307000a106cf0d164f0f41c58d36cb622f9230b11820adec678. 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/ARIXB2501089.
Paranoia Colectiva: Tributo a BBS Paranoicos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee3896461c979daa22c7722d8269f8a00be4e65b3071a5cc1a7e2a8aa737326. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES71G1635403.