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 0x5ccdb57f2c24d88bf0e480cb04eb178bfbe88018ae06e658727a6516601bea49. 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/c830f8e1-696e-416e-8b05-62cccd11d8e0.json and https://artists.proofprofile.net/proofs/artist/c830f8e1-696e-416e-8b05-62cccd11d8e0.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 0x3cf83a755d6b825bf5431831420fe7d87b52619825524c668ce378ece5b2335d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/SID050100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7642b2ee3b79821249749c47d6629116955bb1aaa86ef8b22028ce70ccc95924. 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/SID050100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba449b0afa3e88224cc859207d75402f14c174bdf65c950c2f98a821e1d632b4. 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/SID050100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f49d91996400b76627b28db23f8ee62c769bce172b0cd53a42563d110c904. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:01:57Z), 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/SID050200205.
42: O Smislu Življenja, Vesolja In Sploh Vsega
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9cc0a26332db0a501839c242ee08ae54a4a4100e58554600ae427dc884d686. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SID050800184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfcc64a1f27d62ba2b31e193a8993d6afd0e8cd39dd24acd57f2de49d933d94. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:14Z), 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/SID050800134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec57bdb9e4346fee6a22b70be1784491ff93807b1afb23e5269d9595e8cdbffd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATUM71500366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd6f910480d286cb735d3b4286441c755e6dc5543dc5e4eb1286d0388446a0e. 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/SIA631800258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffef668e9f68f2761cae2f105588698aa41002f9276bb1adf3ac9b9b5346ed8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:21:16Z), 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/SIA631800259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9ba4fe6f9e823bd4b228ff5eafe9d593c68e8036ef1e9f722806e1facb9dd3. 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/SIA631800267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a7ff34a5a43d8c8788327bf9f91e52cb202aea380281b9e97c4a07690abadb. 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/SIC032100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2862a802dd4fe7f6e1ae2584238f1a9c3cdeeca3627cda2851947ea976ef53. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SIA6P2300001.