thumb|360px|The blue plate has more friction on the sloped surface than the green one, so slides down slower. 300x150px|thumb|Simulated blocks with fractal rough surfaces, exhibiting static frictiona
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 0x3fa5f1ccf28c120b314ddfeba49c97b3865ae3444f15339358c77c76d3aafea0. 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/af562cef-4823-49b5-b8a8-3a727e4644d8.json and https://artists.proofprofile.net/proofs/artist/af562cef-4823-49b5-b8a8-3a727e4644d8.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 0x49cc8e5824a9984952192823823faba43d0e19157378a358143aa726cbcb42e1. 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/GBPWR2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56a097da5be641b6cb3f557c1f5c06ae4e8728974e81031856a86c1d37b13d1. 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/GBPWR2100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a08d5511554515f0b00a4a6c9d79613027dac986fa23aaebe3685dbe46ed00. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBPWR1620028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4c6fde37741f1db3cf90969c3efece0069d7291c52d501de65055f2648939e. 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/GBPWR1620029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d311dad09e0798f1f93c56f420074075b810a6e1a85e6d38447868c3d92de29. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBPWR1620030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10b44b3c929726dadfb382bd34b49df17d248c285551879c84779b1d7da5bb. 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/GBPWR1620023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2433805cab432abab4826a0a5b3bc86bcd3051bbded1fcd5deb6cf5a12964813. 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/GBPWR1620018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e39c21caa621458145df5cddcf6cdbc060ee2932d662f670677a4a98bc25b39. 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/GBPWR1620031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ffa54bd38fd64f4dc726872f3402d08862d162aee1ec9db37eff06fad91380. 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/GBPWR1620032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075c53abd3175a590335b552b7c5db43de1a3cf5df573d3c9ed251a0088adb8c. 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/GBPWR1620021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0caaf0ed43e8587bf56755df4fe5b3fef76003eef6ef7ce0010042c04505b10. 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/GBPWR1620033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6859af053b8acc7ecf0ccb0a41bfff99f46c78f3c3659beae99fedc4c72f60e7. 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/GBPWR1620034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351e03ea54752ad8db7f6a0f3b3b0dde9d97da87715fc8120aa81ab940526188. 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/GBPWR1620027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bda4964f20d5d008f9b09af6a39eb0d48e1c94f32038bf230f2eaf7b93bd6d4. 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/GBPWR1620012.
Deadbeats & Brownies - Drum & Bass Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669bcc73e62db6efcbae61097d528aca59647307d8dc8e4eac0a2aeaa4172283. 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/CAUM82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4b2f391c1d224f8fcd11611d7efa2e4458dc9d538f26c16ddef3c7e1efd2d1. 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/GBMFG1600662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f963a241d54119605c24c118b6b2aede26001553d5d58ba147d393a39bc29e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBPWR0600062.