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 0x71be8f0939513b04d5a81745ed4003fdf0f091e760fc457d83dd285cfecc0a81. 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/78bfeb1f-2514-4d23-bad6-d6fcb6d8dc47.json and https://artists.proofprofile.net/proofs/artist/78bfeb1f-2514-4d23-bad6-d6fcb6d8dc47.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 0x543d23614362d689b1f76d021de45d0ac5c8c1a078539f83a504081d85b626de. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USCGJ1429955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53470ce980317f4948ad69113d4574ff34a7b020ac1bb85e969254413d5fe003. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USCGJ1429957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bf40ac6b9dcb0b268a28eee005b3ead60607d1683df6245a13a40127d88134. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USCGJ1429960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d6b751b11e3e031a3d2a617d5e79b32fca1bc9583a40ea165dc3136743a862. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:58Z), 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/USCGJ1429962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904621ccc3db4205e155b7b048814f585e373693b3fa4c777d502f82519540fc. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USCGJ1429970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75032a0109c5c27206b89eadfc9ff112d728876034e5ee4310ebe58a309b697b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ1429942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a88fe56b1a518cc546b14d4d451e078a539dfbd2abe9f09cc3828091c06ae4. 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/USCGH1503988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447d13d7e4d91abb91e760209903b50e9454e72b4804d9df9276247dea1d588a. 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/USCGH1503989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ef1299657f0ece32706da8f271620e4570e0e155e6e21ec5e2b1cd0199a67c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USCGH1633484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3554c04a5f61899d17b63086237d0beaec0a2a22efe7729fb3d133416e93c2a9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCGH1633485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4b8c705d61d852f5d313b33ab0836c95e3a1cc523a92762e1adde2a35cca47. 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/USCGH1633488.
Het Tijdperk Van De Bully / Fact Free Politics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3b9e8dbb65d2cce7fbcb14ea97ae0ee3e206c726773cde0e4a86777d4db764. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:46Z), 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/USCGH1726681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34b1362ba78a9f31bccbe36e075c9c25f9228a57dcc7972e2d996a6e9bf105c. 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/USCGH1726687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6a503ee4369cf92df411825d968d6d090f439659788c9e9fa655fe4ceddd4b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:12Z), 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/USCGH1726690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6f936896b56a94ec32003625be44a9d0051d98f628b8306fa82941a4f71eb1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH1726691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb535e8a7aeaa2025f36d90ed10a8cd9e7ec176fec4066d446855c0431416742. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:46Z), 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/USCGH1848988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677e41e9eb4a2b39fb8405e0ce8e972b3d1eb1ced2444374e145237fdd153723. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USCGH1848989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce465a16756b6432f59b8f2a5b5e5374d293cad8f0d80bef459e1e658330b17. 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/USCGH1848993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4c41cbcb8281fb0f7b261007bd0e3d54754547c3094e5e4a4776905cf39c4d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USCGH1848994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5283fabce54c20b77a381891ef8402343f7587459e9fe16878815a0304be713. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T08:01:22Z), 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/USCGH1848995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17df2c8fbc73b11dac951133eeeb4ed9bd47072da085b1e3f7df3cf986b652ff. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCGH1848996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b1508ffb190a279c3134933ddc143fba1860355b616b00bd39f93a5c726483. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH1848997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fcb2bb9eeb0c98fa9d8684dd5905a11ce30ca69c6083c770977d83eab74460. 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/USCGH1848998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf5b8de087d2a5966f3239903ed64dccc1d3cf00dff52f7a798dcfce7d87f27. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGH1938749.