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 0xc846e603bd401a20ff979979396c5c2dfb396b5149cab256e5d4d3ba13280e39. 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/8fe62fb1-912d-4ad1-b58f-8413d86af53a.json and https://artists.proofprofile.net/proofs/artist/8fe62fb1-912d-4ad1-b58f-8413d86af53a.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 0xa8ada0090c45a92fc47f09fc05207812a347b207d8630b4aa38854af921370bd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX2971601238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a93bdb08570d4f53cec06729444c9d3a529a9fbfa63e9b3681bb95e8a4dbb55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX2971601239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc04861c7d4cf47f932e55b39e2d82fd2698749da3c334d95a6392f1bd835d1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX2971601237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fa548ce9dbe974292fa577e09abe1d8cfa90b203a85a091c40ee42dfb0717a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX2971601240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe112046f3d41669e6367ac946c10927d7071398cac2723289ef991661b8397. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:30:08Z), 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/MX2971601241.
La Sombra (Medley) - El Sancho / El Sapo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b0c1746631533bee7f63ae0529c8f0fbef1b3fd3e7c83dadf6f916164029f. 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/MX2971601242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170a8b281b0627cd5ea0c96a9a500817c590d8f5ec1b188917de96a1023613e0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX2971601236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9c9c5609eb45bfb1eb992abde672d0a6b603591d63ce6d32ae57ba416e01dd. 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/MX2971601243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a2c370eb6fd94e00664a6fa2e1af061177793cc3b90490b6fc2655dbf52af6. 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/MX2971601244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666b075442d3cca671194234d8163c23ab240bec90a68b569f4dac2702fa1c28. 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/MX2971601245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b0e681900342312a57ca768cae83a5ab2c01348135926950a99b39fc02abfa. 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/MX2971601246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2456d564abcc92e33da4657382d7cacb3239620fae7309e1ef2bc525481d7f0b. 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/MX2971601248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eefbd8e39da0b28bc7b2750a06ebe76f6e86118ddff5ba780f2ec4c222b36d. 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/MX2971601250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a96db3309ab4e4f88a884bda3bbe264831cc6155a4304d742a0bfccfa92569. 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/MX2971300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd5e8403302e3cf812e1af8df8675c42f68fa243c65c954b1d69e17b8e3e25b. 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/MX2971300554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179109bf44a758ec19cf25bb734d5b4e76fd93de56fccdbbe1ac76eb71f5f88b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX2971300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8683a1ad578c5e57bcd3dfd9b7df2b9ee2cd90aa3d1a872943a142cbd951e56. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MX2971300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719e3554b1399fd3a02830bf9febe441c96e26d39e76c54c57b7dd27b96c3566. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX2971300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0201dcf1478df0d831505967ca53aff03fadaaf483ce8b813cda39439584263. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX2971300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf362e0b2c8494e16ce1577bdd719f23d538bc6dd6b88d9f67b25ee9c62539978. 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/MX2972320417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a25dd24ebc90d702d20f48f2254c35f17acf1cdd88932972c700b16d6dd39f. 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/MX2972320418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc1a6de63b635289eb6c67321e355adf0773e954c8aa1c2c8117ef384debbf. 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/MX2972320420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e62b3ab18c8f524f1e8070a923063fdd5b679e75753da3dcc153d2b7ae4a0. 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/MX2972320421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568cecdf8e4a9d81286ee711d87735238feb5900dbe910a029f17327e0c16bb4. 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/MX2972320422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54c7a8183d2e529e940fbe4d9df0efa9af6551965914e63dee7577df34477e3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MX2971401015.
Pura Crema Nada De Salsa "Lado B" (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d3b676088e0ef93b07e7619a752e998e06c4ac2be941eefef3e485037fa83e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MX2972120043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff6d5b818e44031dcb85c8b90f6545129457304f2f798d53f6766203cb4c248. 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/MX2971601252.