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 0x02b6b40766e170fedc1e8b12557d72c06b7ebed2f93c2752683f8fa4e3997c19. 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/084e3577-38cb-48b6-9056-4c803572e1f9.json and https://artists.proofprofile.net/proofs/artist/084e3577-38cb-48b6-9056-4c803572e1f9.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 0xe7dc175c7d244771b57c3ae95c28829db3fd7a6d05b8a68e4182372200fa6c45. 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/ES75E2300717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822f323cad302912ac693e16f65193d2d9fddb92c52203a1c4fa8fe92088b20c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG2277937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c09fe9971c0661cec9a578b92b8b53c3a2b9cfb84963ce72459d0a97564a16. 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/QZW9K2340215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b590f7ce0273412bdc8645942289d313f3ff352b95ae76291e6a19468a042a8. 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/QZMZ92309372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e332b9edfa8412b1165b684907ee7cf1569224a430002215d5d1ccaa6b30d4. 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/BK4DA2408444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb5f271961ab3c740aba48c2600ddea228318763b81b27fed8fb343ca347f34. 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/MXH612100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99c2940ddea96230ddc8c2f8344e6b4cd03cab3492ff17691d3d0ffffbf201. 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/BK4DA2411349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd13299645a7e09dd6ac9b2f30b4903684b545e34f182438bbf042daf7098629. 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/BK4DA2412398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb30fd0469fc32809e23cbdca67f05cfc49e868b4fd036a2ed82c6d8bfb9f79. 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/BK4DA2412399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e332b9edfa8412b1165b684907ee7cf1569224a430002215d5d1ccaa6b30d4. 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/BK4DA2408444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc063011c9177dc94d3974dd77e924ac7532cadcd250f535cc1f36a03d60b9b. 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/BK4DA2327049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab911c8d6996bebbf4076ffd880dcd898882ab026c44264c0b5b203b9d0cca1. 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/BK4DA2412400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b364ebbb45bafdc74574a3596ad4c18ad2852d95ad365277b81b8817868e42. 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/BK4DA2412401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc7044c97c9a365ab8f27154486faa82726d63c1450c87e77661e9826e34df3. 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/BK4DA2412402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40e652d558df4ce7df67bb92497178664c05c92fc9647883e65398f814c71c. 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/BK4DA2321587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49606c90ec937e98a4ec1c6cdd7af8c3dbb3b48dbf50ee220c8b5a46a31c3d99. 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/BK4DA2412403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a46a68162fa8359c9b258c17b2173d86544defb7d19fd6b8212f5a8556b5702. 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/BK4DA2402151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99c2940ddea96230ddc8c2f8344e6b4cd03cab3492ff17691d3d0ffffbf201. 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/BK4DA2411349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ef86a7d04eca2b4425a1d6419f016eb6f4040f314fadb4feee4fab8351b3f. 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/BK4DA2412404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483c14f2cfe7695ddfa162ca5a08b54bd30343d6b03516ad6b97735dcfbac3f7. 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/BK4DA2412405.