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 0x5423b5db8372f9f6ad60f316f805c08e2f63a7394452092994e1941c7b00180f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/260dc526-f52c-4cd9-91c4-ec6ba5bc6201.json and https://artists.proofprofile.net/proofs/artist/260dc526-f52c-4cd9-91c4-ec6ba5bc6201.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 0x7a7a74cd37bc954093a53298b6f642967ee339ff6da97fa0865e7dc8fc0a26a3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBMJG2102324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71752b4c4bfd63c80353abfebcedd34309db74fb2c9128886e95183505d1fe66. 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/GBMJG2104241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf8ea08ddc8e839d3dc52b951da34e50a7488921d8ccd15e841eedf088ab047. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMJG2106405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bf9fd9875f57382e86e2260c0b4034f6ad304f0792488dd4a5213d90661132. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:56Z), 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/GBMJG2106408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec4856e0c39acc2bcbe65b51910c69e108ea0037bf28b89c81f8b4ba9d7db3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBMJG2106409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79225404d44f6bc4f92bebe72b39c1e3a45598d50f497dfbe3e7856f5da0a1d3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBMJG2106410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb3a41b7dcc954303104cd2107e1bd23c225dd94755c07d818c523e5ae9ea84. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBMJG2106412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da00da21f7bd7c51cd2aba3c9718a547f543ec1a6dfb564936c78c415b7ccc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:01:51Z), 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/GBMJG2106413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b4dc30026afa6513b46029aade678b97127d7ca70c98c495ac0b5983a1fc44. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:54Z), 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/GBMJG2106418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7567e9654b7467b7d47b0430570a5f785a997230c38251fcf19dfcb90120960f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:53Z), 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/GBMJG2106422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f3a78f8bcc892445975ee03dec9b757018ecd935cc09d9c3dc7a3b699ee455. 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/QZFZ32275587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1390bcfbce2553cbb73e88032918ade317a463643dc89ea33da7022fe4fd8668. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ32275588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410ad405e56077fadc6d46764bd8f15d75141c15831bc4702866288ad79fc777. 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/QZTAU2257611.