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 0x0f06461fe491c5b6dd115e341ea0a73a1bfd2a9f64bcf84bda806ac5170babc5. 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/791d4575-9c92-4f06-9934-38eadcdea3b2.json and https://artists.proofprofile.net/proofs/artist/791d4575-9c92-4f06-9934-38eadcdea3b2.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 0xdf5abe8f3e7a68a578876587ab0070b87ea929ebd923e9b41118a0632680473a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USL4Q2005267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd031bd1581b7a6fde65c852fbc445a6c4360c4f1c77061dc2fa5ace8fb6cd194. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USL4Q2078014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe873c93636e738071f09577867083b20ac134b51879f8bb016674ea5a7d281ee. 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/USL4Q2078016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b9970d626971dddc34060c53aaa05b1158345ac707560169db084fc05c90e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USL4Q2078008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530e2315206756e76ff1a2d0d5ef32a5466ddda106946939206746612a568d38. 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/USL4Q2078023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605b11150734f2cace01c78bf338b0058af7a81a94d18b67e1bb63380a039800. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:53:09Z), 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/USL4Q2078012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13162c97ffb7df051565c37890ab8a6ed37af31cb3e2852acc630a4368ca76aa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USL4Q2078013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35847c4cdf76a35733e61ee59a0b38a382bd1ffe1522a81f5d7a1fe5943c1d36. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:43Z), 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/USHM22394788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd2ec9d680279a23a14234c0390d3e942e126f3037747c6b2a0c42d162caac3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USHM22394789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc415501c9fd551fdf1ab4e9e2f724339cc608edce508159fba4e24b6b00fa97f. 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/USHM22394792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5726a14db0066440c34281a30e6c6a204c2c6d7f43e6733e62f7185e7621e1d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM22394795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae60af4399340755be5c2b5ef91ba81f6727b0ca821fd814e4a015d93c8dd6c. 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/USMH92393938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e4aa31bc891a00206aa745c69287e87fab886827aac8cced4a616496dc0f27. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:53Z), 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/USMH92393940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180960617cc80d3f5dff56da41808d78ed2fff118251298fb43aa6295fb989f2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:29Z), 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/USMH92393944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ec52b2ef2445fb7af0362adb0d73d476606f19aed6151964c73e4d63e8be87. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:26:43Z), 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/QT3TB2413376.
Negereye Intebe Yawe (Live at Egofest 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5abe8f3e7a68a578876587ab0070b87ea929ebd923e9b41118a0632680473a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2005267.