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 0xf24d5de2c64991146a29a949f45b8e8cdb792a7e0dcc1cd855ff2a74e1fbf186. 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/9f8ee293-579d-45fd-9878-b771e8827523.json and https://artists.proofprofile.net/proofs/artist/9f8ee293-579d-45fd-9878-b771e8827523.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 0x6df5e452c1857f09db56f892919169a9aa58d9f9c340d3fad4537a1ddaca2acc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AR5UH2302007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800cdf3ae324a2d5d053304c1be0ae8c68e148b629d863f4adc8123c3058e52. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AR5UH2301887.
Cumbia Rocha - La Quiero a Morir / Y Como Es el / Mi Primavera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bc1b788b3fdec4ade7e18c5145c455995917ce8e9362635390fb498f8440bf. 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/QZW9L2331556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2c89a778c26149ebd6b71d84cc61674e27941ebcf798ac7a9e4c0da2e02bce. 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/UYL842300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275066a9d0f057fb5463a3bb6bbe5e853529883dc70f4b5b297a9127199014b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARAE52300229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8630b01dc05a444e20e5ff7c820a6b8647624489082c17d90d9492ef73880f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2306432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4ad5c4fe6ff7e63c9cd4b3f71cdf21d90b92c01ab41c59d6bf79c5e3dec280. 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/QZTPX2387744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd122756b74a5b01f6145db8869d7c7ad65170fa50223d5d0d0560f0b97d6bd08. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTVM2317864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb50328eef03aa8d846b41279513855a107187b0258291e058f5d5b613a3e1dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTVM2317866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330e35f5cdd4f441b4d32692ca8dfba6da8d147db6552a0701446f5699cb0459. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZTVM2317865.
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 0x696d9b3945285d89e15cd671ec0ce2efcec8530f275500518da1821ee05c4531. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJX2445657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dcb82fb8597c24d2e81d8551665fbba88820825f98df1b93af9ef04886678d. 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/AR5UH2400242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579887c904ab6a62c522c9c4c46fbf36dfede5824817d209da66f5a214dd3e58. 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/BK4DA2508043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdadcd1ba88408b2f7223de13508080e3c542bd088d81e49e71319ece0b75dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK4DA2500874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe944710b62de4d075c2b64942fd2f8f1a2a897bffaa5a16ea7e14752938a945. 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/BK4DA2456320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab74a83ece181f8d5a81f30f2e8c039d43559e65a3e6dfb5557eb976ea94c58. 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/QZZ772448243.
Mentiras / Quien Dijo Amigos / Marisola / Dime Quien Ama de Verdad / Vuelve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a41038afa4faf1b4dced2112ef6dde59ebe6bfb5139299a6e92ad739eb7a25. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9L2342149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b4d91ff8eb0a605a57c78c463310fdb993fc39841dbd7c348f4b1d0288df0. 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/UYL842300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c199ec9f75bb930e0a633c34e1c214bdc8c8aadbaf3bb12c6e278d546714dc. 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/QZNJV2362278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1328a38c1cab161fd335fb8e52d17dec1cd7454917568979d2bb03da73f48d. 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/BK4DA2530735.
Mix Rodrigo (Como le digo / Me extrañarás)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7923299e796b93695f8fab2806da78d67990f01199b29f6b592127fac4832d89. 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/BK4DA2520370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f0acacb83dc7a7db2a8324b2170870c08005498fd170e54368db1586d7b03f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2515842.