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 0x586bfca738584ad6b8b07c6f02aa30ddc8c3b39965f1e25b7c8ae25067eaea2e. 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/562e4c42-0ea1-4d4f-9148-e637851b5f6f.json and https://artists.proofprofile.net/proofs/artist/562e4c42-0ea1-4d4f-9148-e637851b5f6f.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 0x0b39ef5ce2694bf1337e467f447bd316b55d1d720bb7794e3e2f49cab3ce911f. 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/USGSS1300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e102471b45fba0ac514a1bd4c51b4ec994c3c28ed128ac3ce4a0de856bf7db. 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/USGSS1300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377f388650fd3a2661bab6db038145fea73d99397e3e8d2320a55907883edeed. 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/USGSS1300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba055258c15e69bf475ee33d51636dc8bbec38e9bf69b16c388eaf7f2c3662a5. 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/USGSS1300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb46f4533ad92727ba35b4ca8195ba1370b88caedb6d7f0563187dc03921599f. 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/USGSS1300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0a3152e79a45f8e3f946e10a9d8e5e7cef81ce84fbd9cbcb9471a0b96d7d53. 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/USGSS1300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9315e711ef6fa21f931a1dc04590dd2ea08ae98e608b1fe4a18b5069942bf89. 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/USGSS1300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e2a20777a598390755642c9fa09aead10396dd8b11589d1f1dd7b1287b4b4c. 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/USGSS1300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d819da86402dc5da3896f8e2cb5899e2f48f110b4ab3cafd0eea6db16ab7ad0. 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/USGSS1300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b458f46f3aea73e4b1c4098edc2355266a0f549b5dd035560a9bfed26d87a1b. 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/USGSS1300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc4a1cec295a5b25050dc1ddae25e15a97ed5c67ecfff8aa35f6c78cfbe61a. 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/USGSS1300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb8034c2a03c94b4e5ff38fcdd3b951cea4452e0c54788617d9398feaecb5a9. 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/USGSS1300122.