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 0x005ef58e703c526a4bff9c51d2209d895f8ebfede225dabbbda7dc563369fc33. 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/caac533a-8c6c-40d6-a6d6-3f63f6a7ec96.json and https://artists.proofprofile.net/proofs/artist/caac533a-8c6c-40d6-a6d6-3f63f6a7ec96.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 0x4671c4947964b0a893f4c9f10f10c3386694fd2ca9aa4555dda972700e90603a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ES5152100746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf818c41215042705cb7ebfbbca93a804312681c0cb448a47a4f3ab04a0a4888b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES7150600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51df45c23db62b07dfef98ef7aa69969e224784479e150a960cdf24fe5e0375. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:33Z), 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/ES5151802076.
Desde alguna parte (con Vega) - Directo 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0aaee23ef29957dceea831def07e8b3368e66d19792023c2a6326177a277c3. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ES7150700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367dfe06634175c7ec5ddb5e1b362d604add78165ea0b693df3121ec4089f859. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ES7150700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bbe20622eb84128cdcfb20456baca2aeef9a61a24e95516df3071ce0bd42ce. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:33Z), 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/GX38U2386665.
Cien gaviotas donde iran... Un tributo a Duncan Dhu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f6a25b1c6e8e8aa103a78a253f286362143d40de88badbdca237f2dba17fbc. 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/ES5010500389.