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 0x53acacc4fb98dae887d7c1ca56dfcbaa250784a097f0eb41de07da20515eeb4e. 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/8c1489d7-1ced-45f8-b3a8-dfa3b051fb64.json and https://artists.proofprofile.net/proofs/artist/8c1489d7-1ced-45f8-b3a8-dfa3b051fb64.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 0xb849aad34e5b5e378845dc3c107e5d74e8fd874b5aa6c592e797386957d47087. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/INV582200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c4f3a69ca50f63c9f8f96be1d5df93d75f6cf805318039d038f296f702c8ac. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:18:00Z), 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/INA5H2310510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66489b3b4dd5d26bfbf2f2f92b4321fe07c4ae6849ef57ded5ee76e6dbcc1811. 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/INI492100423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d4cf2a26d10a3547ce644dcf6fedc4695b89eafeffc63648ed687492ec9b9d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR96X2416418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded1243d8d939f7201f356dee59ca68a06cf304a101b6aeb5685e8aaa10fa519. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN92474072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eedb4f612fe8b813e2d1a2ed6d5a6ededcac9b83ee54e8ff94f6290bda24d1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6P2441683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d062fa5ddec4e398e1d0dff21ad4758b0bfb1327b6336e787cda9e57ed6972d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6P2441687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8919592e7fddc294a4268f262554ac0f5cc37a0445d5866491aa3fc29b18c88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2441691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046d023ae38b26d9d241d6b7447c3a108444fa06cab2356219a1d4e091ec850. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/DGA092439671.
Nanak Nu Mande Haan (From "Purab Mubarak Season 1")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b358d24d9f6d7a8e85509738bb646bbec644d348e50d17313379ef758b237e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:11Z), 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/INK322400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8f008b8dfd027a67662130db876d22a2185a03ad57eff6e71ff4a0cdd7dab0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYX2570124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bfe07d04c2a33ef8446129211ae2aaaa37bc6e7f76d94fa9d22a839e52e35d. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZN882570207.