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 0x9ddf29fe170853e8fd1078c588d825576269bd740f6cbc6655e713e8e064cf24. 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/99608e94-0ecc-43fa-9b27-d8ef9213af06.json and https://artists.proofprofile.net/proofs/artist/99608e94-0ecc-43fa-9b27-d8ef9213af06.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 0x2c56e013d5f7df11ca13fe0b6c2d04ba32b1c8903e6ccb85482b0d4f9d7a8f26. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/ITAD81900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d0a8270e00242232d2d90fb5f6dff6909c3ca853fe02c3d2d0ecf3247b8029. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:45Z), 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/ITAD82100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dff54c5e3fb96e2e9b59c9970159097a424af79170868f4574425f04962f64. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITAD82200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6681248dcfbb009bc49c3df2f1ccfd0370c537439a1f4064ee045bfc601b62. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:58:58Z), 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/ITAD82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842797993b8928e1ca0b1b0757f4ef26a18caf97b3033655493a1c8694f5dc37. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/ITAD82300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf630e0ec97e09a943537dfcf2136bdfb3adede033419e3ea10923a7d5f6b8cc1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:35Z), 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/ITAD82500083.
Deep House Lounge, Vol. 3 (Chillout Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad246af0f9bd38dfac376a11b4e2d54b8ba8a1f749b380c1d51e9e61c3fbd97d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITAD81700037.
House Relax, Vol. 2 (Deep and Chill Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89570193f599f2d9a862421dd8c631fafc93a9b54b8f72404a832febbd2d44a2. 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/ITAD81700027.
Sunset Chic, Vol. 2 (Deep & Cool House Music Vibes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89570193f599f2d9a862421dd8c631fafc93a9b54b8f72404a832febbd2d44a2. 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/ITAD81700027.
Be Happy, Vol. 2 (Deep & Tropical House Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89570193f599f2d9a862421dd8c631fafc93a9b54b8f72404a832febbd2d44a2. 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/ITAD81700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad246af0f9bd38dfac376a11b4e2d54b8ba8a1f749b380c1d51e9e61c3fbd97d. 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/ITAD81700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89570193f599f2d9a862421dd8c631fafc93a9b54b8f72404a832febbd2d44a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITAD81700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab34188b6c3931c9955902f7b9b246913d6dc887173a0aa4c43b813eeef8f970. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITAD81800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab34188b6c3931c9955902f7b9b246913d6dc887173a0aa4c43b813eeef8f970. 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/ITAD81800019.