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 0x59f420be9e9b4613bffd5b9622067fb26406989ebf9d1a29370c1d32934cfe67. 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/3484f0df-e3fd-4fee-bbc4-5a8fe24082f5.json and https://artists.proofprofile.net/proofs/artist/3484f0df-e3fd-4fee-bbc4-5a8fe24082f5.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 0xa839ead901c4fed273dda65c2ada7974f3d4b6da87234811719b0c69cf151c28. 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/USPJT2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f20428f0778affc82aab00894e053a45254d6b171d15c3bffa9d29b50f399a. 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/USPJT2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266e7a366bf78b37f4ea4d3e203702b7af708c347cd3cf382a68305bf452e513. 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/USPJT2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f3a36b9219477765f6b41aaf7e67227c9d57c73144bbf6984026ebcf31469. 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/USPJT2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e9350349490d9eff8863055eb7d83a0a27b4e5d5f0a4638490d99783f72321. 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/USPJT2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1f6993d8077bfaa25120f12e14d505270268e9962256b1a711dac413f32870. 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/USPJT2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fecf087671152ceb7feab44fad8dfab71f2ae3d21bb18539eaa2aacd431cbb. 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/USPJT2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508d0c32583f8fabee1a7e2e52a76797a3b408369adbbca8b57eba8f014cd48e. 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/USPJT2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479d0f892686a302f7308eea95195780daf5f15efa39ee4c7287b8e044d716cb. 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/USPJT2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff50eccec5abc12585521eafdf2b8e3807f19ae753ddfcd2b56b74553b08f68. 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/USPJT2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ad852d035eb378822972637f4ca7225e901f632b6644eb8cf463b401f178c0. 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/USPJT2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1253a64de74f34e10f3cbdb2432f15d719f2a8336d5458a52875b0e779ca61f. 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/USPJT2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf095fe74878a93fbb450dc8cbf70ad7f4d3a9253e0f4aad06db317ed0dddbfff. 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/USPJT2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfd47c010d57fbcc5f3e2a381000913754b117eca8f69b1f4c941692fec3b5f. 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/USPJT2400067.
Tus Bendiciones / Millones de Milagros (Song Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0ab1829756878c48226479b2cdad1d40e6b5838169d036940fcfc52a45bf1. 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/USPJT2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf10060bc509a48a2801e1f6b2aeaf8468e16de7d2a01349c1c668e4dbaabfbc. 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/USPJT2000032.
Tumbas A Jardines (Graves Into Gardens) (feat. Brandon Lake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415710e196ce47ec87bdd9d52bb3cce57cd8347bfa634c26e670836b31b8abb9. 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/USPJT2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f8ba43137a44cef676ff2c8285f9f2f7821e96dfcb1bc09d98068f7b2095f. 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/USPJT2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6ae64a7aee91cdb1559cda168d6e089ba42717f0931b89323527293311eddc. 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/USPJT2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa2493dd4a13289a00595aba95084840805a27ba16f0a03079da9d0eaa3fa2. 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/USPJT2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eb2864a55ee37cc2e55564cde06fa23a11be540922c4d50c8be8c6c9c70e46. 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/USPJT2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b60e117c8cb34b99efbe1e2d4680b076b9c037b1a53834d01432a55c85573a. 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/USPJT2000038.
Qué Harías Tú (What Would You Do) (feat. Isaiah Templeton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec0f047118be7911e98709ed51008e7c8bf5fbcbb9768091497932d6d9ff120. 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/USPJT2000039.