thumb|Euganean Hills in Italy A hill is a landform that extends above the surrounding terrain. It often has a distinct summit, and is usually applied to peaks which are above elevation compared to th
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 0x6530306c09d7b9fa47ad0c3111b6e48806fcd261aebff480e6d81ca6a5ea5558. 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/2b6d28a9-8000-46d4-9f8e-2c8df1b8a6bc.json and https://artists.proofprofile.net/proofs/artist/2b6d28a9-8000-46d4-9f8e-2c8df1b8a6bc.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 0x082d84e4d57a9c654f8229054e1b6b0d25c4d0f5a340e4df15f7d4b034fbefcf. 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/USHM22086446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2368b7769a8e461b4a2f25eba1d0543e6d03c04fbc3b56246395e2fe4e58e923. 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/USL4Q2163854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938a67976177813466f33985a06835542004af2b5d1e7d9f295613b8112eeb01. 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/USCGJ2217746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b55c4dd31bd11c567233417d3c5b6c9b943bd492dc8d207a47c5f2bd5a3e8d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ2217747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6772bec33d00bebfdbe5a8e4d70117fd5b33eafd756a5ed5e7f23a3a5071773. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USCGJ2217748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926a4252c572ec6dfc5052f98da3a7bb988faf6ba4631ab36fa01d8c605fdb4d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ2217750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4821c30086e42e4c4023cb172b373828f8b0d272e269abfa661007b1abda6c. 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/USCGJ2217751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84a8a04bead33a2ebb608e53854641a6eec92cdc685ac91cbd2ecbc7bf7aa28. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGJ2217752.
When It Feels Like the Weight of the World Is on Your Shoulders
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3aee16ba7bc1572d708175bcda63d1cafc3a908c530d556c2fb92bb3768cec. 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/USCGJ2377416.
The Stunning Drama That Is Our Existence
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355d7ca1af51b1081c8c8007743a4d110250bf401e03f1d33a17cac11f3b3628. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKZGC2409271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855a0141da526c4465ade26d211dd5e8f42ca3062f8e73b2784664148c5adf2e. 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/UKZGC2409378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25a2188211bc51028d5cfe6d45fc5e6fc7e230ce264ffb793d7b9bfa2f7405f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/UKZGC2410447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8181cd845b40f444988e1e150bec394776fc7054ce1282acca8d28ba9e7b3c8c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/UKZGC2502629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb643c2e9526a6ed379ba73c5ef1929b3a5da629a04598952235903545fcc0818. 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/UKZGC2504861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575f1a342160df645567cb7bddbf0c5400ffa7d4755c81cc13164030d3a8a673. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25L2300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404882ff33dbda461359e8b82ea7662432e502e7c02dc5b566c7449e71e30a91. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US25L2300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c20e4653ff8c8e559daab02bd304998b5a844e3e4978f957c57191317b5dc7b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US25L2300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac77efaa7aa749e8f409e2043d7544622ba4fe36443a54f4897ffcbc562a93f9. 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/US25L2300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb857a6aa51b21de626b60054ff9830c2f6db487676c31a6dbd6851e0fb522a09. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/US25L2300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a0fcf71ca047f21aa9f67e816596df1750cdd8421bec1317ce3452219ff6a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US25L2300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f285430a51e30c33e8eca5cefa5119dbdc1313a3d6708a48eee7cd8b9094b7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US25L2300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b898cfea31858dc3c612337ecd17828012ba0a164e6312af1a01334cac147c1. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/US25L2300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df15fac76f99e1e326cdc1a3046d90ec871de35897fd36e24288eb4ca285d56. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/US25L2300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bd0aa597754a3325cfc4431ab77523d142bc4718d213bdd4328ab1227c52f7. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US25L2300219.