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 0x005b995da4a317f207a6ab29f35a4d9a3912be64a2a1eea1f04a643b1b1e41b5. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94b71346-cbd0-492c-8947-99ff2b86f46d.json and https://artists.proofprofile.net/proofs/artist/94b71346-cbd0-492c-8947-99ff2b86f46d.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 0x824433a14f930f8281b87839e06676765889ebaf4825754a5b259fdfd72bbe66. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6QE2328285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60bbdf40dba84c3dd0910a5400343c33d0ec92e3979ced85d586259add20eab. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:26Z), 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/SE6QE2328289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb007669cea5910e20163169e3d48bdf48b4e84bafd012988834504d2ded7e4fb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/SE6QE2328290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fabd13959d4b8254baecd681a2451b1b00a40267372faf302757386a7dac9a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6SA2295354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0167b98ce395bab3f359e3f0cbdc6b4da95120734ca7fb90cb94f787f6f5f2a7. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/UKXN22391305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0c0efbcb0ab5bd0bdb5b3c1c72fd408419c23b486eee0160e084135aed42d8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6HN2224864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb526cf38a1172834ae81a2d6c6186dad5c3b5edb1cdf7f73419822402975e4e9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6HN2224861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b0f699abcdef2c31887672a11903b09528e206be36f9cbda04d463b066a77f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SE6HN2224868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f1b44540fae840776df6b2b5ca7b7b7a32aab107b0e021a6b6017055e2efa9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:17Z), 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/SE6HN2224869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016e468c6f99283463a544fa5182ab53ce1ddd3e320c1eaefeeda207cb8b168b. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/SE6HN2224870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e9692c6920b1e85f78cf160b0fd10be2ca4a950d36e47d062c78a40260ea09. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBMA22315912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400cadd3e14bae80051b96fad8fc6c66f4811dcc5fdcfe526aba080df306e668. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBMA22315913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae44ec626e736460352feb44014761debddb6611d4e08c75b03c11fa7245fe2. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:30:26Z), 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/GBMA22315914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c03e21330f008123fdc276882f99f77e6567eda3b9dfc5291ba26d0145c3b2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMA22315917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84c11a25d4f385528bebe9f6372ec65d075d33d12a210ee9f02661fd72a19b4. 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/SE62M2218124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0255493c13427dd05e5e695ecc45a30fdaa06bec38210a69a81d032dd3af91cb. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE62M2218125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeee8c79785ea126347a28140fcbe0e0c8bf0b819675cf1294ab5b85b3d151c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLFP2415324.