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 0x2c3e696e8d7fbf10aab1f639cd5ce2839561241177e1f85b9f0473ce7c1c74e7. 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/54cc1eca-bff2-4d77-9915-63b1fb30fd77.json and https://artists.proofprofile.net/proofs/artist/54cc1eca-bff2-4d77-9915-63b1fb30fd77.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 0x6e68b7ff97b3012dce65892117a481d529acb68f697c5576e312c62484507033. 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/ATV110336002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de9d8ff215550819aa61f612bcf741d545725f87ef03ae19a7579d028c0da17. 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/ATV110336099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5467509f82259e902809da642168871f2e642a0de3a391cbad16a45b0ed9ee8. 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/ATV110336011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab83fdbbea2114613449e60b8e3eee0da61fc6278e8fce07c726bceef3137833. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/ATV110536006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560f4c5977427cc89cb9f07bdbae4528a2c98b3dcab95a691dbcb1c257ffde63. 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/ATV110536010.
Wir bleiben hier auf dieser schönen Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa12b2771c11888f34a86fa83cf267b029d03c490e74daed15d1fb0974d0106. 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/ATV110536013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852841b5ff8fd57b2e689da1ac0fef911fb1334788c9c51e82ad3ac467d05e26. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ATV110829003.
Kern Buam - Medley: Der steirirsche Brauch / Der Weltverdruss / Mia san vom Gradnertal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601eb3eb4de73b18c76e479cb6e683be315acc0c73e069988f6048bdef7eef18. 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/ATV110829004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de89d7165c66145ca6715a88ffdb2b18d324a23a22ef1addd53ba06eb3791c1. 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/ATV110829005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037937649cec36f17cf61c3056e8da6ab24be4d3db0d914bfa351e95aa131bbf. 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/ATV110829008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67da02d91b240483751c1dd0e71b84074abf359dc3a5a5f00e7fac91c8d95e17. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ATV110829010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c25fdcd90176277a5f42e290ddf20301febd2659e395ee35618b9ba2651791d. 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/ATV110829012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c18ad238bf5330a44027218686f2ea6d80a52ea4ab456458579a0f5680a933. 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/ATV110829013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9231e67d1300bdc4115eebcb68036aed706a02bc72050a747451ca786e75f381. 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/ATV111808001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee41272a294d4d601bd0b9511eea8a248b3bece155723ff1c7bb8a9f5894c6ec. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:48:59Z), 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/ATV110829006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e68b7ff97b3012dce65892117a481d529acb68f697c5576e312c62484507033. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:53Z), 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/ATV110336002.
Bariton - Perlen: Bariton Spaziergang / Herz As am Bass / Willi, lass es lechnern / Go Willi, Go
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b38c835307f51f92c58c794b5876062578a3dd82b587b32a8a6bb5e065680c2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ATV110829011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852841b5ff8fd57b2e689da1ac0fef911fb1334788c9c51e82ad3ac467d05e26. 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/ATV110829003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601eb3eb4de73b18c76e479cb6e683be315acc0c73e069988f6048bdef7eef18. 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/ATV110829004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5a017fad49a0ab52c224a8b8367fc2f4a5bba6fe982fd0fb81911f28a768ac. 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/ATV110829009.