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 0xf0582bb6e12cb55580a96b9c1ac653d25e2fb8118372acdaf17d3d658ebdfcc9. 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/6592b1db-bd6d-47fe-8725-77cadc2c2013.json and https://artists.proofprofile.net/proofs/artist/6592b1db-bd6d-47fe-8725-77cadc2c2013.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 0x224018d4e2ba545fb7bfa664052eee5291f5615e501f08dea80459654454b413. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5351303695.
Es Tu Querer Como el Viento - Soleá por Bulerías
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2dfef74190e3cbf25b2996df2e0e58c8fcf27f7152b183b9074122135820fe. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:32:59Z), 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/ES5351303698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70753a69c8f4426039e05473f32babc54791e1ce6820077ef8f83bd9f76e8989. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ES5351303699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3ef8b8ad9c67c19f3ba27361db4b9ded9185ea3df3d00cfa20110f8a599395. 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/ES5020300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1039a03649e888357a64d91a8e659c86f8f0476d55082eff61e176622d21309. 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/ES5020300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89af82e338f7449fe2014fbf9ca7d8aba7b3b11982d5a68e05b40dad04e40966. 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/ES5020300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d5db521b982500e90b3fafeabee7e76f5bd418f9d3401de07009f6b9a114d. 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/ES5020300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c8279e56b849d9aa3ab0f869882bd245544325e3dd5457b70163936df8a25d. 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/ES5020300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0f31c540d3288f428f93f8ed15d74a8dea1bf73cc6808bfd3b66566f45c42d. 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/ES5020300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab90c998a162d3a7ee8ebe117103288e1e2da017c217563d5d361c716f315061. 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/ES5020300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b96b34a1712cd6eff1a6614a0f86f8ab6fa4e78c677f6647f8e8ef1063450. 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/ES5020300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9870b0c1eed01039a21531d6fc9f70f4e994e8ba4a5a01ca4269d9da855ecd. 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/ES5020300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd03937edca548fd3d9d1f887cf76bdb9efaea256309c3fef4a99509e752cf0c. 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/ES5020300333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2690b95e0b6bfa28060e8b0c2c9089461cac33b196addf027702cc1facecc0df. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5302171070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb11ba7fa34cc4895a58c1958d21513a3f9f0a1848a93edc742765dac769bd1. 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/FR0P12100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3f81a346c46a11978222969c85f38845021c7ba0b447cfe7eae3a66eaefb22. 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/FR0P12100270.
Soy Gitano - En Directo En El Festival De Jazz De Montreux / 1991
Montreux 1991 (En Directo En El Festival De Jazz De Montreux / 1991)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961306a13750bc8a8eb30ac3d1325d6c823e09962fed44aa2b06cebc6913dcb5. 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/ES5701800943.
Bulerías - En Directo En El Festival De Jazz De Montreux / 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc10d4f9a6f870aeee9e60c231e24dd0da0be2a189536cb30b6aead00a0b4f. 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/ES5701800944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396fe2ea2d1ed5942f146c6e85fdc94563c977c05c9d783a24f4ebf1c788936e. 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/ES5021602632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c80a0abf5ca49250e1d1eae8dbbfb8279c518c60d80c21ce58a6aa87c46a2. 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/ES5700600600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c04a8cccc14471d1fff02b1361bbadec3fb78448580d6462d2ee382591d4a8a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES5129700095.
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 0xb3586389abe90f288f5dd9d64d644d7083bd4844bf6fca6977e4a39c36d3959c. 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/ES5701800135.