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 0x84550c70cb586a42ceb40cff3beb1b0a1e90b30ace3b1794f82ee228f6d37d57. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6c3f236-efa1-4ddb-ad62-7d534985e8cc.json and https://artists.proofprofile.net/proofs/artist/b6c3f236-efa1-4ddb-ad62-7d534985e8cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Midnight at Clearwater, Native American Flute Songs, Vol. 1
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 0xfe51010a3d5634234d9e6d4567554f9ad489df5594511aaf78a5c6e711caa49a. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USCGJ0882044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f72d876c158951744c35b7ac4101aeff03497d9e598512121dd153f6aae40e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ0882047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba77a3ac30f334af8e8ff36a1ddf5e7b1c444d5ba44d4f6d3086074231d59d4. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:51:42Z), 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/USCGJ0882051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ead7f3d7be0451e323926fc3bcd7cf6368f3755af0e154cca4a669eed6bcc7. 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/USCGJ0882056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9009b2b171134d0231e35fc91b57046ee7ad379067afb059a0b1016dee6eedd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:36Z), 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/USCGJ0882059.
Native American Flute Songs, Vol. 3: Nisto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1379b392bf6e70cb6eef20cb392c69547c793ff8a40d3721cd1bd12b2fba1f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:27Z), 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/USHM21953227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daffc6a0933fb4c22db4ca87b752a5e757b9815a706c799509d98b9333c0a0a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM21953228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52047454eb4da9c749b1c40ba746e93c203b85dc68d240c08a6d976f60a5b463. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:47:01Z), 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/USHM21953229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81ba4c9dacea1687711735f13252f6519d8d02c7d6ee51b36af356733aee3bb. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USHM21953230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c777f4029347b97eeae94ea52a3eb540999878db1b9b234f2d60ff3192c9a0. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USHM21953231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026ce5694a1642e296914dda4c48db76a7cfa728fd7989be6277a2d13a3493a3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USHM21953232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01a86f25cf1df6ebcea38160c84eef2fc5934e28fad92d403847992f03c1454. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM21953234.