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 0x0ac5b3e7f56b2d0cb351bd96d1c1e7d51400037eeef4e75d408d5986d98b1fc1. 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/cbae6ac2-a5ec-49a6-820f-c7b791e834b4.json and https://artists.proofprofile.net/proofs/artist/cbae6ac2-a5ec-49a6-820f-c7b791e834b4.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 0xb50c228a312e98a9dae684c13ba14d8de1846bfee4592f590f7c45761014ed40. 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/QZK6L2361165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be674bb253e97a86e442b6eb4525021728d8a294c5aa6a3bb3f031bb2a53adc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDA82276720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb727ccf2347694b32bf8abb83a552bb44a46c55b41937484f4182279442016. 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/QZNWY2265968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ed2511f135b857b12389aa8dceafa2c45738ca79cb81037beaa47fcad394da. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWY2265969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd203f1c1c6c10e098da51569b9ab54e8425fab5462688479ab2624cde7407c16. 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/QZHN72165528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7c88544e0954516612db88a18f6cfe136a90f51b77d34dac2c305fe9a088c4. 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/QZHN72165529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79448d69562abd3782857b5a80baacd656a6b4788c66d168ca89e3d0541e6fb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN72165530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1cd65afa82043a1da29b240588d0ec29f754acf3209425387b7af236838592. 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/TCAHP2395374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d59e07ea3ae350a1b60c868cbb2cc6adfee8e8a35d13f7bf78424201366599f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAW2235161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeddc3a5d71cab6ef8b046aec6e6206803ab21e47408d0a4c5524e84940d9d85. 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/QZTAT2286093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368c95f8966c733920887416e7a1945f250179ed21604e8a545fab14e11f7727. 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/QZHN82323499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14d03125fc7e853042b460fe4a71d415e807229ecfb220eacf008e8f7b7641. 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/QZES92323298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9876209f2e3e317b8c3658be528d81abe3314470b3147ba3aa759b3f4e649a29. 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/QZJ842002710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4c9e4dc74aaed3022f64ac076914f29a950aff03e40fab7587e7e2fdfb1717. 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/QZJ842002711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa191630419cd970433c20dbe668b8ecbc06addcadd780ed2da81cda219d2e4. 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/QZMER2224318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e3e060aeb24ad5d9b7c48e7f70591b2a652eb1d6111f506cdd25bdf38a7574. 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/QZRP52166613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509dc4f64927f3baf0cea41e258766a09ed2d2f0d07bb2ef2e9be52d99fa934b. 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/TCAFW2151834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882a3b41f42b6ed8601cb8dd8996df6f991fdf7b7520e131c2cb86d7be4f2aab. 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/QZMER2594051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124226275855e2b7a41fdf33cac6917a2c6e6ae09597bc84b6876e895c4158a. 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/QZHNC2517074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9471bb38e609009dd258ec561bca9ef5b2ebeec74da03d98820d301ef2728e4. 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/QZZ7K2449487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522b24a3299d0b6fbbf71c71b51d0e66ac69fb9643c6d334beae667aaf4f97fe. 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/QZZ762401868.