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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4757edd4e9a4d722a199913100db099f93696f1000f2ddabe1b0de89e5ad9b34. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e606824a-e855-41ab-a164-5c2c99e9bf4f.json and https://artists.proofprofile.net/proofs/artist/e606824a-e855-41ab-a164-5c2c99e9bf4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sun Circles - John Beltran Project Remix
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b76bf1473d5b9f8df98a9b57d3cd4244b063594aa96c61d02cc209a452c68. 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/AUJ032300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd1246082a700d4cf6faf234f3697a83eeb2bebff0f8ddcd1d616094226768a. 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/QMB622317802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc7949e3cb772a14ecce9f8267574e4f8807b752c7b353354643eaff2777e0e. 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/UKW3Z2301647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd7dd3a2587cd5b5de245d885626558145c4fca2d29f8e1e54a6e70b4321a98. 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/GBKQU2458218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f35e16d000e2c7b5b9a86bddf5934730c59673eb830b15c3a3f750b5e4b2cb7. 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/DEAW12400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc521170fbe6c551bd114cf122ab9725db7df9773894b0cc082764e0d8403ad4e. 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/USLZJ2241024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031f56f089a7244ee6f8bdbc5849a1a3a597186fbfe3a37b8da1050bc371d8b3. 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/USA2P2360081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf89b7cd103b1d3e75e632d62c0399d487910678ce5d2e196a1391d8d249220. 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/GBHLW2300868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf66d2b6b68e8f1354df5f1797b2e405026efed5d8f1d52dad352f1c48d7d99. 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/DEAW12400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6a37cd62148d0d40e3edb62f64862189497c0e4d589b1443d006bcbf207079. 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/GBLQT2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7daa78ec556d995d19940b78724c547573a644ae09b722a3b5fb04e880c1d83. 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/ES8742430205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d97e36c753c6e0c52908107027f8e5548085d59a7c6ef16b4f5beb5cb8f37b. 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/GBKPL2207888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3920e1ff84a3ff682e2cd02559ccdde14fbf59a87b5831a02ac9362951bd2538. 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/ES8742430206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9d73f0f04a5fa3e2ad2898c9d9bc37bbf37938a527abdfe768989c9c141b42. 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/BEB042300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228fa6e08bab88d33d5f976db378546e8ad1625796fc5216a5e59c3c518e4982. 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/UK8SW7000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c63f9269aafcf1199dd634db21e6ced4b96a8241178cfc96f2786b4921ad73. 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/SEYJB2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85281719d06d8787e03371d378414df899bf531754c3cac993b09a2faee445b. 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/DEEQ72315906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c89d26a67e2497f5d7be9a0022edf923e254ba03f369bd140aced85bb8cd3d. 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/GBKQU2369418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6515b832c823b94d33b3117afe62b7d1af1d2b33883527326a7330119bc1ae20. 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/QM7282423238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5569d1718128aa35c2f3a7b06235993235f8c47c4d2fe149e7ac8408a00ee3e2. 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/ES8742430110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754448bf97b39ddff9e3558b487a281f4c5cf27a29ff91ba35f82e9ba0776d31. 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/AUCI12017201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5633f32c32e88eeee131fc56c4d647ec4c9b3f64c5fe03aa5fbb70c8887d06eb. 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/DECY52201036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03e6100e7613f09f57ce3b778b06db9fe17c7ae25e0b220c19a526ff8eabfa0. 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/QZPLS2488937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad331be52a30aabc00389b9b5ca7fd68c6c4be4434475d3764c51b2721e23aa. 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/GBSWG2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1bedb71897701e4beaeb48750bcdd72f3d91fdff93a4ebae9b8ab9616b0990. 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/ES8742430212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00cbe1917d21a69a674a4d4500fa3c2411d7223d24aec560256913d958a7e54. 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/GBRDX2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd67ccded5356c7aba081d06dfce5cf76a08ef387ccc4530a73d4127935332d. 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/DEM092200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b76bf1473d5b9f8df98a9b57d3cd4244b063594aa96c61d02cc209a452c68. 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/AUJ032300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4431fda98c0cd07341d33f64f5f9c143fd75c7e050303548018f539526ea85ad. 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/FR59R1920538.