thumb|A toy kaleidoscope A kaleidoscope () is an optical instrument with two or more reflecting surfaces (or mirrors) tilted to each other at an angle, so that one or more (parts of) objects on one e
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 0x4efafdebe5e54ef5c744823f77d887c778c33fdcee30ae541f9cd41bda46603b. 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/3136dd93-f48b-429f-a89c-bc6ffda8dece.json and https://artists.proofprofile.net/proofs/artist/3136dd93-f48b-429f-a89c-bc6ffda8dece.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 0xfef93f41d565a4c68fbed75c4cb50b34ffe83d83b32638bdb7f6d7441444e4e8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM16701608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8286a4c07fcebf0700d7f756e91353db2fbc4e7718ae24add3eb9b2aee18c6. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/USSM16701609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8b58981467944c036c36c86649135f48fbf04868a6db22592a3783624e10dc. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USSM16701612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e3333f4672329dcb883750ed7d1e0cc4f050ff2cf6d64a95e763cb0c364f7b. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USSM16701613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a81cdcbb5ce73b180025ada13dd65bdcd646fd6381a1c71018e6e1b4dc20d3. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USSM16701615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e1eb86d7dd2d1033fa30327c4448bfce5b93107684e591b43db2a59250ece0. 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/USSM16701616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1097188e28a592fc0dec296efde76856e95cf808c240431ee64d70f0e6f5fb47. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/USSM16701619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb35608b4a9a0a385f23ae9a8fdacea1779d6f44269a7a6bf86cc090dddd11f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USSM16701621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f206ea0d9ba6986660b9146575afb9930c623eaddff2dd1d64a1b4152f23a85. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USSM10108600.
Incredible Kaleidoscope (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa636adf13f9b576f12f023067194c2611dc5bf7de46f4dd766db74904a5e6d15. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USSM16901306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa02494576164e7f091d4c2db209d24a452c32d22779a5ff4bd81303faae753d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USSM10311216.
Mr. Bongo Record Club, Vol. 3 (Compiled by Mr. Bongo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c50f4d5f80235c177dfa23551821e5564f1948461560b7b77446aa34cb5c2d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBCLQ1900042.