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 0x64587be8e1a1351b4ca2c4a867a2041e8e12b3997bffaecaa87a65615565c07e. 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/a7e083b0-844c-4223-a2f7-8727ede856a1.json and https://artists.proofprofile.net/proofs/artist/a7e083b0-844c-4223-a2f7-8727ede856a1.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 0x379e9fc5313deff1e59236a68ff6386e23fe5d49785260eda81bf8fce2c3f569. 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/USSM12304649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dbefcd169335ebe3499759e3cde76026660fa6aa6bd021cc4781a7ac18b44a. 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/GBKQU2446693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e2b83843305ee7a97e2e78dbec95cf6425c27b1ec1775d8cc7a8d8ff0bccb2. 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/GBKQU2241158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0886806d0e9273789ba4bcdbddb346b36511ff6f00f36dc6f24464b671ccaf. 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/ITJD12400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead807869c2eb6df2db5a23c57a4fbb68f013a734b49206cdeb7aecc6f64cb3b. 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/NLZ542400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea57aac0484f1b90a4e42ceebaf34247c775f5b5e0c023fa434c68d4057a587. 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/USA2P2415917.
Sombrerito Blanco (feat. Martina Camargo) [Extended Mix]
Sombrerito Blanco (feat. Martina Camargo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7e9d532772643b70fb876542b1e4c8a68c715aa20690ada67ca88784c5f8fb. 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/NLZ542300906.
I Would Die For You (feat. NEVRMIND) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1ca398fef63a4ace7bfb2f586df8adfc70117a24b70d89f9474f1b2d6185ee. 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/NLZ542201985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d55a810ad183d63dfb7ff4e9a00a19989f3937ab5d1589c8f8c4b53808f304. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLZ542200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cc5a08a90f14c68ee37b6a5eabed25735344e5061874d9697405b8a894cbd6. 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/NLZ542200865.
Africa Ya (feat. Flori del Pino & NEVRMIND)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902e59d976b54d87787489bbb5067d98d7cdf4a6ae07396c81700636da8dcea9. 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/NLZ542101128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f419f6d374e4adb397dca75fa9d70e3ac9375e7b9d0f6b73ddda470c5596f77. 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/NLZ542001298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb2ed1be203f9b6899d8d25b83b487a755aa086c65b724b5a792f34ddd803fd. 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/ITBQ61900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401cb342fc1971f665afd3d4af046d4855cbf6f6de78e081a29e9c4d4f280260. 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/USUM71914599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc52636c0b24da54a0f900a6254955f3116ba787d37ae9bc59c3930153f59c6a. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:31:59Z), 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/NLF711902526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700edf1abc3cefa3c7b6da2cca959ecd77c30940c6f1c38b0d59574e1942614. 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/NLZ541801666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd22b38070e336ba1526cf5688e39a04bcd27dfa104590133dab7c7a8bb4b8ab. 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/USUM71807676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd145b233dd78ffe6ea202805e12216588be8861aa99d60d7d834ea5ceceec0. 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/USUM71804194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a2299445d29a57152fcdaefa5b9795c64ff392a65922e3b1fa8d84dfacdbd3. 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/NLZ541701682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb5e6724b7ac01870f3a8214942e8e3a47669bcd9d8c8d842f5cde0de8a28d7. 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/NLZ541700839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379e9fc5313deff1e59236a68ff6386e23fe5d49785260eda81bf8fce2c3f569. 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/USSM12304649.