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 0x30f8ac5c6181ec301840c52ff6d9fada98f4a3e36804340afb42d17f206c9280. 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/889adf54-5b5d-4d3b-a957-e1a980cff422.json and https://artists.proofprofile.net/proofs/artist/889adf54-5b5d-4d3b-a957-e1a980cff422.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 0xb3910e71f629100b7dfdf90a2f2977f47e7cf6c87e17150f902e887ded159137. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/PLS102162636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acd46e9c45f4afaea32cef690407ceadc9ebac69d35f7dd731d3882cad82621. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLS102162637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482368e32c4cf28cc760438b711a258068f748c115f90606f10f17d2b50632e2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:57Z), 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/PLS102162638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32185f713bd11729857a2ac1e9fa836033875f3bbf0e969cfaed986ea42fdde9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:27Z), 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/PLS102162639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06882e0dd25681d4052ae3a8d42c4d3b41105d101e53a64db2ae2c456ae979. 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/PLS102162640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69122d2f7c754582851b217451695670351b6a1e71833b766d97e8f1b391fad2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:21:36Z), 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/PLS102162606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b58da87717bca92f32f8992d1b4863b2819ecee7e4a10781eb88820ec2c4c1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:24Z), 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/PLS102162607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f30c53a5bdb12c29f0e2ae83ca05f270dcc10dc2457205d8524846aa0a73242. 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/PLS102162608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5741d2a57c0e39f81450734978423f1e1c6d7a81e7ad8728d069dbdea8e40336. 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/PLS102162609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b1a4b4eda9759b58a956771b0f36390a299d09d973b86539326bc7e638058. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/PLS102162610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e6c0a8ced500995ce0c5bcdceea4c18895e4709e32c80eb612bf8225c891a2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/PLS102162663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ec9fb5776243edd1b593008024db854abc856b22fe68f5458bbbc4e54c2974. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/PLS102162664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51cdf1e696fb6996858ea7285ffbf3fa54e7e22c343e787b5645ab39cd7997e. 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/PLS102162665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24221c019589d9d50e1e1513fafa73bf193ac91a940acf2b0016633de7f2cbb7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLS102162687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4737aa1d161e3fd2d2e7a57d6c3bb13e0cdde47d51bc3737f559ad069e6f97b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/PLS102162688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ffba521e4367c9b753b964f517959513e83ff5e03e8687b14f946d27a2f0d6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLS102162689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5e1e9521b2446b9c5505b5071e35a6ab697fd7d66e942d62ca9faed902f181. 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/PLS102162690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f769d2ec4aa1bcf607b681b63a72befbb77356b266b65dbe44259b504c2077c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEXO32460980.
White Noise of Airplanes - No Fade, Loopable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9c3c98f3ab4c929b43deeca66c7018eddfaf6dd86655f9c9a85dc0c9276b28. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:14Z), 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/DEXO32460982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea53540354a1221f988e6d3b3eebcec0ca181738ffafca1f023791abc031f6b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEXO32460983.
Overcome Fear of Flying - No Fade, Loopable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2221028747907396733c2148d47ec66de591d5fb876610baa4c7ca20b7ff9a50. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:20:26Z), 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/DEXO32460984.
Relaxation for Takeoff - No Fade, Loopable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3302349e502c059afba3bcee5ee639891cb402aaf05153df6737d54ec93f03a5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:42:56Z), 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/DEXO32460985.
Calm Landing Approach - No Fade, Loopable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9803b03c8c56deb4207d99c2bc938d4f68d6820f00f01c44c6d822cb45cb00a9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:37Z), 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/DEXO32460986.
Ear Pressure Equalization Sounds - No Fade, Loopable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edcbc4be30b48a4af9166eee214779c162d0488d915601aaf77f71762547021. 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/DEXO32460988.
Relaxed Flight Sounds - No Fade, Loopable
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e9d3801d38108865e246850bdfd12bda74f5ebebf215997a7cf5e799b6e9c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEXO32460989.