1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb2aed9d2293ac4e585b857077df14f372e6e48475febadbe620ebd8e268826af. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9ace4a3-0e70-4eb7-9e63-ffc7089b05bd.json and https://artists.proofprofile.net/proofs/artist/c9ace4a3-0e70-4eb7-9e63-ffc7089b05bd.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 → block OTSBitcoinBlock must exist at that height 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 0x3162f4b1e757a23952ea97e201adc08b56d93be07b7354fce2fb1060f7727a22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6M2362396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e7651e2478c9ab2711989c6d80ef0e5a8445995e81fa64295f3ac33c388837. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6M2028819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046927f34265de52aeec5671d82a0782e4a63d3da164994cf4dae3ddec5d84f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92054055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ae3551bc02d74706963c924e1345ee94357525f04c3379210af1dfd30cdca0. 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/QZES92054057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d21a4892a81b2aba7e2ffd002842c7c1e25830e7b6ab5c6a51f92f806a738a. 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/QZES92054058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420dee406f931f9c393a8c24f21fb9062bd12808321badea21b8ace3021ece05. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92054060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6bbb6956c72585b3b6951e16ee89c929c3afe8d3276ebd734cbdd4d38ad799. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN62160873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d21a4892a81b2aba7e2ffd002842c7c1e25830e7b6ab5c6a51f92f806a738a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES92054058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80bd0665194602457ad6f9b991a9104b4ffbd4e71d27721d8bb7ed9ce468bdd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN62160875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765944003010fb2ba5f57ccbd7094422ce21bf428f954096ba50946559f6646b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN92068365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda51953d7e5e5aa8c033f5b90a4d5b821b21ff24102c78298dd4d44c4c2172a0. 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/QZHN62160878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b61d47c0a9dd97e3726418834e018fe900f30fc20b9882b72db7c4bb0f671. 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/QZFYX2102106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef079ef9bd92f3d3bb73955f51586b219a94ef22ae893773fa95e4568ed7c93. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN62160880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3babad717fdb2296fccda52ae3a9f0e45bdf9178315b8b2132367014406019c5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYX2102107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5487ec7ab7989b45c742af31fb594503475af5861a2e8ae6ff6362d677de9eae. 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/QZHN62160882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc07b8da487b58a784897ec4e77677b4d313bd352f7b2b661c404c09afb65e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN62160883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a1d87a24dd62694234c2121024ceb46e43e917789972d3273913204466ea5d. 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/QZES52135258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87124aa1a8ae8b9d97482f96ea952dfb867883cff372978d4edaf3a0ed221b05. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN42210298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56f1bc7848f8276ae0a5f7d95733a114d916fb6471968e222e977f2a1e19738. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEQ2224202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf92658a36ff006abad8b2dcc90b1dcb6bbafb98bcf7d6a35242afaeef295962. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6M1907866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6b74627a6dd5a4c4fb2e6e812ba4dedf51bda467f489d846fda4a6c2742cd0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6M1907871.