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 0xd4248356b34302a27344e584e78c6b20b124dc9dcc1e8f5df01d02598090d005. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05686433-f660-410f-a952-2cf9639ebf65.json and https://artists.proofprofile.net/proofs/artist/05686433-f660-410f-a952-2cf9639ebf65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
New York Flamenco Reunion (feat. Javier Colina, Perico Sambeat, Guillermo McGill, George Colligan)
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 0x3734499ac07e57725a86051193b8ddcb4f81b173748d6cc3418a03a2006ab938. 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/ES5120000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95de257f21b2e27f1b6fef73d3bff2f7cfe61088ff9abc4c83fc334d811680e. 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/ES5120000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf38de12f1aaa88ca54e35abfea99f48579d8d73e594d7c3a98b634a5c08c882. 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/ES5120000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620467b9819861300c0838b3e5c795dfd78620fa09ddb64761695e5e28ced5cd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES5120000345.
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 0x7ec2847d795daf0c2f674b4bb5b7447fc82477da1a5e1dbe0885b397a120b298. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/ES5120000346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393f7d5cbee41bfbd536f76d151b1696d3ac42155fcd2212b2e36f7a85a24e3a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES5120000347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3f9ea0d7890841167158895c6e5f6fab0fe93a12a08a5ce956b0e4bae6fd0a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES5120000348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce4f8c8a0308ec368f048631bd7554a58990e44276984dba6003a3d094af5f4. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ES5120000350.
Bluseguillas / Camí del Bosc / Bluseguillas
Ara Sí! / Tanguillos del Medio / Ara Sí!
Berklee Recording Band feat. Herb Pomeroy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032bd24e720738221f181e6b511c8243b3e226f7099e1985420ddf619dc3b83b. 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/ES33B1305003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6642308ddca7018af916161b3b17dc2817c31828dc8ba424f7b0613a1db23e. 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/ES71G2201890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a3f26d67d27d77f76c36bc2662d2014737083ca2e3075f40b29810b2598581. 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/ES71G2201892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d93c836fbc943a59d77633f1afe49336b2a9ae97504a0b1c9acb4a51553871. 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/ES71G2201893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20695a42356ff14ee90d9448d9b1c9929fdc8f74f6758dc98a31377d42f53a7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G2201896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd909f6e36f89395941b87a533263e24419fdf6979a28e7a9499347d6a069f0a. 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/ES71G2201895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe40ccdd6a08161a486d4cd36abf71a16b596c077f2528bc9bf5f6f72411794d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES71G2201889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33af2d986f5c52c99bd01a1bdc8986c88632060067e2474c46a309c50d91d81. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES71G2201891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e889d07648c0694f4eed8424e2a1c14764e5053be12314b0857614e601bbf2. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ES71G2201897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad350b95e1c01d67206c2f0318b596824a32b322af54aa25894550640adfaff2. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ES71G2201898.