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 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 0x595cdef0341f95c39ddb2adabc6d275002a32eafa364e6aa72426ba389f94258. 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/2352c98a-e677-4521-851a-52fa2bdc53ca.json and https://artists.proofprofile.net/proofs/artist/2352c98a-e677-4521-851a-52fa2bdc53ca.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 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 0x3b66c9664e446286476090e1c4d038cac09324ae8db9fd37d227579ae44138fa. 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/FRX629877010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144d898e25374baff25779ea2b366f525a52d1e669a1b355a00b9aa09a8b9fff. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FRX629877040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eac151199efe20d6aab1bd5c79fa9a37abb7eed87022464811edc128be5beee. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/FRX629877060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efab7ee97ad0d88de5fdfaa92fc9069ffe44f50f151315cb7ffdf03b356f02e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX629877100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7c5430192047ae0c888014810960b2a0e2dbd0bc9200a9d5a524ce25310cdc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USGFC0800801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4094c0d1f12a6d53c2cb631b7f9f7207b8576d52981c32c13437c85affd8ac11. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USGFC0800803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513416d391b6be3ede6339f39c3b8e0c75d4fe71ba24cd7dc3e0ccaa0a31429d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USGFC0800805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4230844e3dbd175074e613d9d94600a46db6a1dc60da9680f9de8ab90e23b57d. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/USGFC0800808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa885de4ef88011c47d076a01c5cd724462820cab7be9ae5fe682d541411c66. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/USGFC0800809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567baf74cfc5672c68e84527aa1169ace6d9f518821fb1b4082cffddf146b1f8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USGFC0800810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddd20aad728a01b51316fb1782d368b2a49ada9956ce838ee2ea28e23d7a06d. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USGFC0800811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d613325a42c9e9ba92999689021c0700bde288d7efba2976d7e1e4e839b299. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USGFC0800812.
Zvichapera (feat. Chimurenga Renaissance) [Chimurenga Renaissance Remix]
Zvichapera (Chimurenga Renaissance Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdcf77f989cbcbb06abde1af35e2db6a26f21deaa7ba55a082c3ba45c21248d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR9W11420293.
Vier Frauen (Quatro Mudjer / Vakadzi Vana / Quatre Femmes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56744a174b495e672e4d6de311b09782b48074f64b2c5080381e0f3cd4c6ce20. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DEE860200525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdcf77f989cbcbb06abde1af35e2db6a26f21deaa7ba55a082c3ba45c21248d. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/FR9W11420293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdcf77f989cbcbb06abde1af35e2db6a26f21deaa7ba55a082c3ba45c21248d. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FR9W11420293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fda4dfd0a090d60ef69d369919582d18e9e0adc6cca625fddb6107b6fe92aa9. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FRX629877030.