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 0x014f4746006582572aaa892384db1bd1dd24d82cf373547d049496d384ae1173. 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/26802933-54be-45fc-810a-aa3bfdcec623.json and https://artists.proofprofile.net/proofs/artist/26802933-54be-45fc-810a-aa3bfdcec623.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Dios que Adoramos (En Vivo desde Por Su Causa 2012)
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 0x9508785f50ab6c01ad20ab6012a902f0e1a5b107d08c5113f23dcbeb280637c1. 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/USDHM1390001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0804b212a5e8e2ba2230adfc151b2f59f81cff4b3ac2a1320cffe5d306c4b3f. 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/USDHM1390002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0f7ef0a5d2d55da5924ab44ceb2c4db9ee6399021a49d7dcd47ffedea08f81. 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/USDHM1390003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2e04a514b1387c08b5c2551f983db8acbfe80352b084330471fce972d8efe6. 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/USDHM1390017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014f2f376b199afcb2307604b928c5339fca9b4bf57d8f03597cc07f06cb9720. 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/USDHM1390018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a81a3759b828c5abbd41ea9d52dc141a1e5a1ec3590814409c5b960f275c25. 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/USDHM1390006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c51e2316586cd8f476edc9ede293a6b41997466750cae5100128d06a2c6195. 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/USDHM1390007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990c4b83977c4463e90bd6de6bcc950e1283d3de5c373772cfd680ebb00c5916. 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/USDHM1390019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6106a510b0e5c55b8a2a529752e18763f7156877473f8545341b281e8929bfd7. 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/USDHM1390009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6088593e72e59dd833f44065e67f82fac367962c7fc9f1fc3dd67467378c4a. 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/USDHM1390010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f61e39b869dc058c9b007ee10a5ebdf6f4b4e3adcd36711517ff669190fc03e. 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/USDHM1390011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d694b6a0b0931f147167b5f5a12dfe121b08a34053cc109b590cd5679b5a1e1. 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/USDHM1390012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88286088198ccd5b12a42838900173600dd40048038211dc6359f3d8d54d23d7. 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/USDHM1390020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5a47e27e316523b62b8500985b41f8c1948b33007b1a72500cd1c13423bb70. 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/USDHM1390021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208f6a92a09de0aa635c220892356af3dac48d7bcfcb1b623fb8d4aa32eef983. 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/USDHM1390022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7332d47f32d134c25a10eff94597eb975c1babaff6aefccd32e325f396ce6d. 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/USDHM1390016.