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 0x852211b06e602fff87396eea46301cb5b4b410f597332d7d81e8009f4176f8fd. 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/4eb1c1cc-bd94-4f9f-b0bf-b8ff8916501d.json and https://artists.proofprofile.net/proofs/artist/4eb1c1cc-bd94-4f9f-b0bf-b8ff8916501d.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 0xbb3a5272d5c11c5b322b10bea2e3f5f63fd65a9397e3a2325339fdf7920129a3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEMQ50900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19018fb7ed9a28f37bd00ad9b49a57fcda4bc87461dcac79b36b896b6e52f12e. 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/DEMQ50900303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bad0785be61a61abc0d9897334e538056687e237816214775ac666725833ef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEMQ50900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486c51168dbabf54b8715047ec6d69ae1a8eff19513a31cca37dd80e84f2c04. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:42:07Z), 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/DEMQ50900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf673264f038f8d0dba35e7f69ba527613b7c835a9a0929b48560e4ed9c6c58fb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:51Z), 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/DEMQ50900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa25cb351a3b14a27c204ac2084a560aac26ae512be3acbe1a36e96d01011a. 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/DEMQ51200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4a6a5bf6bb290988080e0bbcf362f532827efef0eb5c968082483e8d51e744. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:57:15Z), 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/DEMQ51200808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba1a717147f49c5dfa4f306d221579f1307fb047ea3ea55b182d2c86dffb247. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/DEMQ51200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967f465ed5b3ff2bc3bed26d212719638efaecc1fcbf550bb6a37f55025591da. 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/DEMQ51200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b9e4c07785d24a56eb567841c11443d1ce828d4edc28ba549258306ed3df92. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEMQ51200812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d604e64d3b6e399e13e4be4595ffe5e1557d0a9cf85102246a8e82e0a32d0e. 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/DEMQ51200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf311aa22382243acd77271fadaf015f0f14506ff04be4e610741cdbb8e753c. 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/DEMQ51200814.
Wir geh'n zu St. Pauli (Walking on Sunshine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288171c6a65078d03633aea32f93f879bc902fbfdb3fd40f39b9d070456322d1. 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/DEU161001747.