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 0x508f28ba6711005fefe44ce11150a3f1f1752b9add5d41c2e2d30b0c6c2c5da7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bfe095c-c062-4ddb-8678-09159a5dba64.json and https://artists.proofprofile.net/proofs/artist/5bfe095c-c062-4ddb-8678-09159a5dba64.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 0x89176b4f0b444307cc44f10dfc68e93830943dcd1d57232fb11d52c55f0fbc6e. 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/JPS801962596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa769cb02606f3a005754f8bc3583a3f6357c3a3577482abec4d305a8ccdb0399. 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/JPU902305497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebc7ce16d91d86c9e85b40dcfbfec1cff2de26b1d655ca72101f5ba5ab44fc3. 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/JPU902400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcb6b06da6b3d1aed563d7e094147d5752c5def3a9bf123201b4c23949a4aaa. 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/JPS802350907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cdcef5c8b5f185b3ef165ea6072c29e6791e5dbec670d41c26c26bf828fa22. 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/JPS802351570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91641d1db608a8797230ad544165f2f0074605fef7c77fe4482a5d70c24020e3. 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/JPU902400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332fb4f7e94c44b250515733b9b8a3a530dae7c5a1f1a46c022241b9bff1aae6. 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/JPU902400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b34a186e14312b4dbf7ceebf2828ab8a470ebcd7150773e5e96deb64738b76. 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/JPU902400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50f9e25f2e05ff740c44ae61c7f2868826ba1956ce13b16da50dc08218090e8. 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/JPS802350143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc4cfbe8b4cc6018cf488418908c2154f572a8e5955bae8b69f23f5eb898be. 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/JPS801962597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9136aad1b79e0985fa6b1455e03633f5f3f6c6616259992d6d61c4345709976d. 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/JPU902402767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d0e35f17b61ae85e9ec098bd629eadd9ad6ff521c979a883b3daaa28b13d92. 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/JPU902402766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe785330ed45d91d22f7efe45b1231d63b64afdb194f8bfff88880c0be4ed5f12. 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/JPU902402448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53441f7c103ac6f3e7771b3e20bfe6648440c1b36661a817dcb47619c3a054a8. 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/JPU902401582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa769cb02606f3a005754f8bc3583a3f6357c3a3577482abec4d305a8ccdb0399. 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/JPU902305497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad569059e7e78ef6b88f216113553e0d3f29140ec7c2e04b1b23e094724e97b. 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/JPU902305004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcb6b06da6b3d1aed563d7e094147d5752c5def3a9bf123201b4c23949a4aaa. 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/JPS802350907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50f9e25f2e05ff740c44ae61c7f2868826ba1956ce13b16da50dc08218090e8. 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/JPS802350143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89176b4f0b444307cc44f10dfc68e93830943dcd1d57232fb11d52c55f0fbc6e. 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/JPS801962596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc4cfbe8b4cc6018cf488418908c2154f572a8e5955bae8b69f23f5eb898be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPS801962597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7163a7af32d365ba42800b7ee8e02266bbb81c87892c703eaacbe74c9de37cc. 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/JPS801962598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc4cfbe8b4cc6018cf488418908c2154f572a8e5955bae8b69f23f5eb898be. 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/JPS801962597.