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 0xba7b7d84ff644f1c7f4d615f26761954def45810e60b7269d0d76429b50709aa. 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/1b6af7ea-8131-41e4-8348-b6427c54e374.json and https://artists.proofprofile.net/proofs/artist/1b6af7ea-8131-41e4-8348-b6427c54e374.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 0x807780c425f46682b38bc9138df5358e41a3f39e9bb7af4b0d271cc8f649ee7c. 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/GBP6T1900292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2bfb28f026f81bb3f2fcec3bfed364afcdd0ba0436f8ac47c67783ab341beb. 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/GBP6T1400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b04720a7994a42928d80c0b00869b827c13d176c32553fdf0205028ed753d41. 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/GBP6T1400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a21d5db745972adb7c18b149c47a9710ff038a5c8f867639ab5adecf55da417. 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/GBP6T1400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bedf9bc69a5016452df70f2c38036abdedd42f62e1c23e3f2a00b1cec99f15. 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/GBP6T1400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee057c1e1ab43cb36ea831bed8d866df29ddf15d46a15d2e6aeeb5d153289bf8. 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/GBP6T1400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde959bff25529a14e13c663ee7fc46c9083bb36008ecae68d7f6462b7432666. 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/GBP6T1400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e6e5e9352192f1be54c7d7522353cc695f3c02644150a1b968c21eb1c26d1a. 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/GBP6T1700246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf24cf47b3a5cbf952d7053c4ea83481e676adb18bea6aa023474d38aee59dd. 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/GBP6T1000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aaed75a624a37468b44f8b2bd40ef3934b4daad270ade7165d51213d2a49f9. 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/GBBZV9451295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b9a3f203a40fddcb28c167b3a271aac9a102c8f9b0b8e5c1a385dc807cbe17. 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/GBBZV9451297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49786246c1e153abb0512d429f04f63a98631cc5e5fc0dd9c53fb3fe076b9e10. 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/GBBZV9451298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda706fc43d6f54d9dc6ddf472be5c09d632145c0baca508c934be6ed44e50b1b. 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/GBBZV9251242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14204131d9ec395ea11dca0207b566acbe849f1a744ecb4d49811d414aa0fda8. 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/GBBZV9251254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8819fc3c71a7f0c5389e4156d87e912b5cd334321cb75a35f4b97782b657d547. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBZV9251277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2c0a84b743becbf04da1d38b1aab2e0b6a163f565007b28c7801b178221ca9. 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/GBKQU2275414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a46acfc164026c16c5ac12ecd6a7c9a8255aba92d7c35db9f36e89e5dda8a5c. 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/GBKQU2275415.
King Size Dub - Hamburg ("Flut" Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219174a43841596b4e98ca11fd12456cdd4a11dfd845ac3b42972a7cafc2faf. 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/GBP6T1400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec2860a4ddcccf6fa451157da052d59d438e05aa7d9a5a05ee9e5b448ed3988. 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/GBP6T1400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334b05df1f46fb178c7cd3bde87d813e25078a2fa3f7102bef96b28ed9d7a530. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBP6T1000032.