Clava can refer to: Mu Boötis, a triple star system in the constellation Boötes Clava cairn, a type of Bronze Age circular chamber tomb cairn Gracile nucleus, an area of the brain that participate
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 0x3567c243bbd1b1abcc14ebff6656c93bfaaf64428940768c325eb99407848135. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec0882e6-e507-45e1-836b-97caa59e7a72.json and https://artists.proofprofile.net/proofs/artist/ec0882e6-e507-45e1-836b-97caa59e7a72.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 0xd287109a95f1ae7b49b29ab6f9526dc331d7ab9b723d70bbd8f33bae02c2e82f. 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/QZNJZ2205840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b3dd2e897245905494be8db3e34858c74f410110248c71eb669e854446ae73. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:33:13Z), 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/QZNJZ2205841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba23e969970e1c6471a45b981ce58890228b63890e893bbf3b4c092ae13bbc5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJZ2205843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d0da92f91c835e9c3d1672c67efce4698737023768fbcf9efe88f44f2754fb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJZ2205844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd0dc552b8482383d13474f8984cf229ef727546ce7ce3eca465c879292e9a. 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/QZNJZ2205845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f240eac2b4a0d394aee4bca5908639e992090d49cee86c3142f90bf8a4278f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJZ2205846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51f4ff7688a65e2084475b7507e3ec3eb57fc9ed919b505a211bfcb9789876a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJZ2205842.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432c78943c1fae2c530cefdd5cbd801ab45e1ff68a1aedb337857eb1b8fdd1b4. 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/QZGLM2497413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b95a4dc774bd16f3e98bc3979e59e66d3b51a81997c094a95b0e0ebf2261b3. 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/QZGLM2497414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94785e226b78b2ec48cf720c51d30ed81bcfb7ce3a25afd9dfb8ea866fd26bff. 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/QZGLM2497415.
Declaração de Guerra dos Condenados da Terra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d28701e143651eeaaa9e38aed505740859d6dd87b182ff92c6f5cafc32a49e9. 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/QZGLS2190764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b4e3f4298c8a3182eb8d60bb6b3673bf59b1e657031b3db72043049b0e50e4. 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/QZGLS2190765.
O Passado É uma Lembrança e o Futuro uma Possibilidade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b4224ab6c81527b9b6e43b042825f2c2372787672d2cd481d90c08d8642db7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGLS2190766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aebfa58385fbe3ea8d058f3eef715a8e8bea3d6250357c95cdf1fcce130ad6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZGLS2190763.