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 0x97bbad3ffe49a6910c22d3e4a78cd1cbb54886c895a531f4b0069df19218f1a0. 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/d238bd21-41f1-480d-b097-9bf252b629b0.json and https://artists.proofprofile.net/proofs/artist/d238bd21-41f1-480d-b097-9bf252b629b0.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 0xfd430fa1cedb184154effe0aec8d491def8485711446198389a3f255ad4f8fe5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:52:11Z), 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/TCACA1483432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c04c80297b3f54961a6646cff202a26b5fa31c1bef2547799bf0e91c7da82d8. 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/TCACA1483437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a59929d299814cb8dc43db7e6a950f0d8faaf115b5e9a59b9eb3641ead7f406. 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/TCACB1476411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5dd6acbe36aeef7b1b20ecfb49c15676f9a8035e16d00eca757ed41d6aff07. 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/TCACR1631902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1488db049952e4761fda292f10bebb8007cb84c96ead7c03920c9cbc7e24778b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCACR1631904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a6b849b9af79d14bb7d0d6be4f767ee176bc45f7f101fc2b0f06c76b4cc507. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:52:32Z), 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/TCACR1631909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8a7fda6c73cd3ae747fbb2075b03522accaeabff6a7181f91d6f82372dce4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADU1893700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898df159d065b065ce0d7494ca5678add9e39a4fb9c4ee67b8c24f085626fa20. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCADU1893737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1b36487407e1f74fae269fa5bffebc12909ddfb0c7a35aa9d0e8acce149055. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCADU1893745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d0621069fcafe74b6f24667afb66d6dbff7311d485bc18614f437337a1d4b5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:39:23Z), 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/TCADU1890155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4d8db26cb919a2e6a98ef10de06c1f9e922608ca2f5174086d92d03b834a33. 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/TCADU1890156.
Protecting Ourselves from Immoral Behaviour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c949c4aad881e48e772444a45ba5d7f515cb5b4ecab1a709211f96cda9211f. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCADW1800883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895aa632b0fb8dbfd9fb4c3949d3ee2ec1dc2ab85c001fb0e691c9a5aac39ec9. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/TCADW1800885.
Promoting Good Relations with Family Members
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe503ccbf5d7eed1f7843fe3a75b01f80d72329ee4685296726e999aa01701b9e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:57:43Z), 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/TCADW1800886.
The True Believers Listen and Instantly Obey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bd9b615ead2eb6d37ee82ff2df96d40eb53c2f525bc3c40c028c80a3ea91a0. 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/TCADW1800887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc27a75b211b9fe9532f55ab4476b8fb20ac53bb1b1bf044bb69de8e90895422. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:28:57Z), 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/TCADW1800896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc768af0049c0ed84b455b521b8466d0a56d1662fec99e7af7a7cd5e43ea2bee9. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TCADW1800905.