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 0xdbfad5efd9cd5b837ec5277f477f3adc46ab33658f6c78d105f8487fc6a9c9b1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f28b037-9227-4060-8e52-de5189ae014f.json and https://artists.proofprofile.net/proofs/artist/9f28b037-9227-4060-8e52-de5189ae014f.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 0xb4747ef2c7cacbf0d86a0da3a00d4ab1ad3030a71d6b81ec84faefa070d73daa. 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/COA6W1801443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a6e4e734f93562df7aee8653899299fab8939c39469d8965cf767e5a8e95b3. 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/FRX871522583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa831c4d4e666f06ebb71ffb8e1c88b3a12e6fe6e6284d1b9cc0873499ecdac68. 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/QZ5AB1764174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7199298b5f756130687ade8be9f0673f251bea5b813e4ce38ef5ad22d1f659. 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/QZHZ32128835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b9e8b412bc66d7c84ec2d2d3b49e36a12f39168ca35fd5e700bf4da4ddc2ae. 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/QZHZ32128834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01824c51658d726474132358513f6b0827ecaee562df117e9580db35994fc3af. 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/COA6W1900884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dddf310782873aa36055ff4de3788927920c8a50e4d658f82ad81e370b46ab. 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/QZHZ32128841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7dc1a1ff14e83f490aff48e41b0e5ad12a66109682daa21014bb8312059b1b. 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/QZNJW2081843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeaaf5c2813eba0fb8e22527b2ce3be8fd3ee75981a4005080f08c2749c5bb9. 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/QZHZ32128838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f25dc87db285e4e7f4fa5a104f6eb931ee83362d353ce38d477ed39357c5ddc. 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/QZNJV2091907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26fb372de64efb39fb2ebad0e6c8c0ad0a489e6342019662cbe7c769e97120a. 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/COA6W1900886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b43d0e1c91b6326e0e43d2bbdae9f2b0667b5b1aafaf12d4447c1a83d4c363. 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/QZHZ32128840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2feec9d4e8a3a628864b970fd5c6521f974f19355770ca2bd121c87c97d77d. 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/COA6W1900885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeea6b9d1a5523f1103b6713eda66ef42192bbb3e028d42524bf98d23c03262. 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/QZHZ32128837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c0855e0a6dcd67d6fb06fbe59d3db87897c9eb3381ad0412f3a1e427ce0d02. 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/QZHZ32128836.
Los Dias de la Ballena (Banda Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff63105db54b804956ddcedd39ecb4ef22453202c83db46e3b9b446f5ce6ace. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ31926003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8b7a41927d274f46c42ecfd316be01ca2617e3cd2e0e700956e029fae504ab. 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/QZW9L2301552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697d1574d09dd35be7db8d71d0d665f517efdee0a2cc4a666089ad274a028623. 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/USY242438312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a681d7a8e1f41fe977885fcc08795ebcedd44d4a3fe2bd18b3dcebfde34681. 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/USY242438313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02b393215bed087a7168ec43a77bcefe1317afeca9c4c10c0407f598739b0b5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:47:33Z), 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/US7VG1812264.
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