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 0xb64542590bfff3b3804358fc009ff60f4b2bd955248f9c547db45a77ed529412. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62ffbc46-816f-49a4-879e-326df03d84f7.json and https://artists.proofprofile.net/proofs/artist/62ffbc46-816f-49a4-879e-326df03d84f7.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 0xd8436ba7d3055d3e1ef4d1600b5f29a62e55a3f9d5aeb9a1b1b5a11783ce11f6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ATR981308905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3bdd9c1db1fb4560d975b67ac1fcb0f2c44f709026ecd0031592975f7ae81c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ATR981308906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d98ba97141ec08ae78e7ec81f857baf05f56f23c2cda7d8b3883a69011dbc8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATR981308907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f5c4e85da7c496a13279a2c89e155467af7814aafd890123a2fb710571c3f5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ATR981308908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbbf4368cb2982cd58231a3da8972b8fa8ed3dd1e7e0ac0affefd8cfcb58ab2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:53Z), 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/ATR981308909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f153bcd61ba4517f04d706614f98a39a372b9d287850b68080ba5efa2a1311. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ATR981308910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbfdfa1eab19458e4f0d26bcf3a9b1b7e2fc5ffbe400ee7c981279d023e9114. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ATR981308911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37331705d2af25205df71fd1c203c650c4bfb7edc504e82990cd499900d9f22. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:48:42Z), 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/ATR981308912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8243443b87dd1516d7be603b4803a00d331b6fe570a7a07d6c5a282b697d5ee. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ATR981308913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f7bfacecc45bbfec89577a75a9e7dfcfac3e7a41f87657d7e1b23fd02e71bf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:49:20Z), 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/ATR981308914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03de065db952c805e66dbab1e40b3f76c6a290c9de19bf6bf699043a727d100. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ATR981308915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd926edae42aaeb1c793723e22618c80ee4a8ed6a8f0998192c6d675e5f6a2e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ATR981308917.