thumb|Eugène Delacroix's romantic painting, La liberté guidant le peuple – "Liberty Guiding the People". An example of a revolution in the political sense thereof. In political science, a revolution (
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 0xff843c1424e17506ba2542508d767ab3cb59571e2182dde7718b54aab23d8f9d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06586751-c4ac-497c-a172-340e09afabe5.json and https://artists.proofprofile.net/proofs/artist/06586751-c4ac-497c-a172-340e09afabe5.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 0x289b138b430cc644c309be5bf63c11415278dad2e915c72c8fe28259c44bf7d3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ZAUM70600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0f2b5192dd8b48b8467fca182889492497422ac42fd979e283d185d955be83. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ZAUM70600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e39f26188b53f9293343eeddf9119ebe3504e8b3058be30e1c5b0656a3a682c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ZAUM70600128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d5b4f8e018c7116ccac0c8d04d83837731bf426314e631dc1f37676f66355e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZAUM70600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a2e5eb20574c1f88988f26e39903deb87430c561f1979c4ae748fcbcee2b02. 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/ZAUM70600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c862b469fa79221087777f57168b9edc6fa35bd0705ab47621f67da643a886. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ZAE090700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd9b4b0cc2f34932566e71310ff3cbfb61efb4f7eea6978f2791568f008d9de. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ZAE090700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c88e74b20b18a5194cfec11c5f70bfdfa1dce60445417af71e7ec2052ea3f. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/ZAE090700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c07ed57cdb3646d0465cf4f45812895fc875930c62b4725af2c647c57ca441. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ZAUM70600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b691c87580f28c02ab4eee39205f8646f7efa9745b199c425708d6667a97335. 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/ZAUM70600347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde40d5d0067be12b05eab3011973e0070b5af6bde7a6d06d197562b00161d0f9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ZAE090700239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e58440349375ddcbb6e351cbc4f52e5b449c02a751119ab81fc5c4b26b03a9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:01Z), 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/ZAEO90700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8556ca3471ee802257d77b87e050ad3f0531a7c2991dc71706e536c0fb6afb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZAE091300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49b70de50dfaa947cfb0a8542c1588998cfd679d74a407967a73d63ac50bf03. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ZAE091700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d28af1a9013963146be754de1f822ec7cf9d2b178d6c6457b1571aea222f81. 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/ZAE091700003.