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 0xd5a76aeb3c55292f6592f685ff0257640530a3456735b961a55a54f20979b85f. 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/c035affb-8ada-4756-9c46-606b7001cbab.json and https://artists.proofprofile.net/proofs/artist/c035affb-8ada-4756-9c46-606b7001cbab.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 0x5b394a92c15e668250ff9df04a34874fcebcbbfbfee1bfab1d5cb7bf3f48d0fb. 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/ES5151301808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7871dc3ea452a57bde4c97cb5063f28dab326189f24307162a8573e797e5e7. 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/ES5151500440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebe8e82477190da51157e674966b217c6daf8946f1cf2088fc8ba0e97ae8275. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/ESA011710379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711c269d90497e1901c09badc6bbdf90675540245da8b8d562bd8c6e6bee36ee. 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/ESA011710381.
Me Voy pa' la Tusa (feat. Orkesta Mendoza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda0e72e5a6d19402c258b8deea8795f6ace9f8ac34c329f32616de08fa708bc. 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/QM8E51400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374e3bafaeec95668aadb112f8fc025d22adf53e4de81362973c709b382f03af. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QM8E51400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278efaf21f203adebed55b96b8144701e523c0c9d5fb0b19d6e8fcb108fb9338. 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/QM8E51400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467da3412dae1f5d5f392eefafcf15e1b0428ff750cb946f1bad9c1fbbee5fad. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM8E51400636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe1b18316cb6d1f6bc0483b6ea3f34d13d18a899674233aa37488f882ee1a5c. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QM8E51400637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c42757686d4a15bc9c46d770b8beda284eed44fb526be2a9f25c34d29532d. 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/QM8E51400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df84521ae6600bb5b7ea5a2a66a2564cc2a079b614ba8cb1fb51b8449cf0142. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM8E51400673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6deec225ca5d2cf4e438d96ec635b9e9b1d9e22bdf20b8306ad427067d213be. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM8E51400783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b958211d53a88b8eb7ea839208b56078f107cb1bf36145e02fffe73573e349. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QM8E51400784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62be6b90aedb74b5708517caa6f17422d6fe3364df9231d866dfc601d9ea2c3. 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/QM8E51400785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d1d947590fa6764146ca84badaca86392322799e620af5435bd1ddd81e5023. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QM8E51400786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ddd6ca18b9504324362ddfa29b00c0662a63b245a5261485e855a6a2d7b0a6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QM8E51400787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c4002a6e740be71dc6d5a0f4a72a19f32f88aec9f17b0e904ab800df34dd33. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QM8E51400788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb447d64dbd0289c166ade87fb11c084c41efaeaca41414efabfdee678d3126. 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/QM8E51400789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae905cdf7e243992968b360efa9a06f6d743225492b99002030bc469d1be68c0. 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/QM8E51400769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b394a92c15e668250ff9df04a34874fcebcbbfbfee1bfab1d5cb7bf3f48d0fb. 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/ES5151301808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe0cbe9045376099d8f44498f2b35c3cc0c1e5d2a82fd3a4a1872bf92a48651. 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/US6QR2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52886aa5bb470965f68492900f9481e92f5a95c6e44cdb23926f972ee29f0c18. 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/ES6101824602.