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 0xf87d20b279ef3f66ac14195bf21387423b3d5641a6bd09d968eb3e10051c16c6. 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/b29b1804-f523-487c-9825-3a5c98e4958c.json and https://artists.proofprofile.net/proofs/artist/b29b1804-f523-487c-9825-3a5c98e4958c.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 0x14e0173ba0073e78c4e964b1aac929f021792238f2bb9535a08048d351479c61. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLC062113911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32de80f219f5ef638498fb36c45c86dfbb1d755ed37cb8bad296d8a7eacf85f. 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/PLC062229911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212e24a479ba278c6e00db4a445f4e1056f13b729a26394d19a88bdeaeb5aeb7. 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/PLC062231946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a25a6e59dd162bbef3c9b71b4899c598f77c6f0fd332c763dd3265d9136c3f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHJ2381478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326f814ad21c3890fda9c26e36c52c3e33a88597671cfd6f511eb90739b2eaad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLB382500617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7c4c5939a343b1e07a72c6459c2136ff0a5396902bc943a903f59a1216947a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLB382500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a50d3dc3a383d4c80e099b09fc9c52441e0fe7fe37034a00e250815df064b5. 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/PLC062225359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22366582576c8ad29b85291e65b91ba8a1dd5f8356123f1b20e321bd890c6487. 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/PLC062116668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a46e1555210241ce266fc1bd0672b0efe797fe9c86c3b874bcffa3086ea347e. 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/PLB382400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cdec8be89824416fba077440436cb39632b895b6b2017e1819f9cbd2b33c81. 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/PLB382400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d96e3b346fcba375852b6ce75e48233c74f9fb460ab67059a07e1738b0aefc5. 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/PL59G2400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616be41a78ebb9c9af72f903ddf375885bfbe8b0f07fd1493b9710d6aeb88d60. 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/PLB382300607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0709ae36ae0c2e1b3e582dc9227902a44f6f02bfa1bc62973cb6ebabd4035e. 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/PLB382300495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77acad11cb040594d52571c3a187dca2a6c6c6ea145a4b6d6c517628d73022e4. 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/PLB382300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23b1f348a398d0ed5268f10ed9f0d7965f181ea7f632a7173ae35817497ec16. 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/PLB382300499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb886425d0d7531ec23ca30d75d0033d16fc5a94db82f58c37969f1890d960040. 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/PLB382300502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fff7d0deab9d81623b98dc6f1d3d017c54b24d3b6bc2c2a9da8be518b39f4c. 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/PLB382300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90249fb4a2179434afeb7b96fbbcbea49f298750b5afd78dfc63854e538e5e14. 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/PLA552500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c8b23981f14af492de66173c709acc98e9e4a2183aa510b56bffb91221ad06. 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/PLC062233529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1387043021e6f57a04e02b3230959c86c99a6c836206049152802f44ad3d9bd. 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/PLC062373370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef096bc363dcf2c471042246efa9eabd189257ddfacf6aa30076a174670779c. 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/PLB382500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919964c34df5510e617c63ca13571e96b03bbfb4fcd9e8611c31b6d4e8a1a8f3. 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/QZTBA2518467.