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 0x83eb4fc7001e2e9c7d9286285eecd6f18daba65b6d3737b98dd00184cb2d0a22. 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/f118a5bd-bdfd-4d6d-ba12-936132facf32.json and https://artists.proofprofile.net/proofs/artist/f118a5bd-bdfd-4d6d-ba12-936132facf32.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 0x97ad7f90e7bed3479d2efcb0dd6ac2a3a3f0ebbc6affea760523da4244fc5658. 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/TCAIS2447618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118a70c1423d3e0f98066c7199c6f0b1958396bc69ea33f94a007e7cff09259. 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/NL3GQ2100538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e46f279f6c4ad4f9af3d116689c70845a2f9d83ab57886c178d6ac3ea6d19f. 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/NL3GQ2100520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd673ea7c5d469a2f9f080bc7413bfaed2df17044da74509d2a8e39811ad2eb21. 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/TCAHX2433761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b477a3c623d704800c11ee178ff1c9b0e7a33c05ca1c107839461058e8321f. 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/NL5MF2102305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e411fc31dcde355a811cf1eeb52e53e042ea60f551c25f1e2a65944f05c44. 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/NL5MF2102306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fac06328b7c592e44026dc857ef2654913d9e928e263d99321429548096ea3. 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/NL5MF2102307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38a9309245c123ad6a6ded259fcca7722a2be940e8adc2157a2d8c0b68d464. 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/NL5MF2102308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a3a34663db29e2aa62934f0d46e0a3d397ee9702b0976688d9c64bf6b5700e. 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/TCAHP2384220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613592ba7b45dff3f89015fc22f7d335ca5469f792609bcf8d6a2e3351c65478. 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/TCAHJ2311023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90bf600e3c1c794fab6a88c5e6a1467a9eaac80637416e6820525dca1fbc0fd. 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/TCAHH2323871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00d112f9c6187fc1b0a5e2e3e952fa0aa7f9f15326a1cccbb543e355342c274. 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/QZNWR2309623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd3d6407751d7378ab9dc494151b26d5e7e79618a388efda956687105280340. 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/TCAHC2302351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eb3d78c130f42b7cbdb4e48d0b4db217a8727c7ca5ddd875df5aa38a29a020. 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/TCAGR2209076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b71a20a5848b40f13cec4732d4907047e213c91f0ab74e50d1dd5ddd9fe2d43. 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/TCAGO2243572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48724c9f7d31b0e55b84209c481e91bda3f5051e39b6b16fd094adcef64ad3ac. 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/NL4NL2216336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e778f9618c1750e9ba3d6d396adcd5f794b57040870ac1c58a5fec1b43ab3f8. 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/NL4NL2185962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd886ca3ab4262f3102f4531cf8c3ed12328039614c87988ae3553150f3aa8dd2. 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/NL4NL2176857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc82f99c19c3f3c9753b9c34c1fcdeea0eb1f83c6eaf4677bb84b3187872df. 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/TCAIF2421257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39899642dcc2b9047e4d07c00873df2be3ffd0292d03a6496452147e02a9a764. 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/TCAIF2429559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807e0f97f040d8e1c75e98f0f68eb3aeab06b53a4a94b216f057947c782de903. 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/TCAIF2429587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b715d9ab7754431a431fccde05d2e178f093ade61bcfaa3596c829f7844eaa. 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/TCAIF2429638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb7786b5026bd8bc9881f5847e470172989b0dca15b4943339d3fd6a1150b52. 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/TCAIF2429680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e24e44841c601afc7eb7b86a3edfb55cce3fda6e875a13ee5440bc57a4bc16. 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/TCAIF2429706.