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 0xb7ec05aa9e253abfce90de42fdfa678ed013334c5ee629c8eaa4414035dcaf13. 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/5397666a-2748-4270-b12f-2af36f376d32.json and https://artists.proofprofile.net/proofs/artist/5397666a-2748-4270-b12f-2af36f376d32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stuck In My Mind (Kevin Saunderson Curators Edit)
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 0x153eb7989311283ea2f0f7c14e70ac915533405abb614716cc02a8403d2f4594. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USA2P1604442.
Everywhere You Go - Curtis Gabriel Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33d3063022aa9c13af8f355e5a202657c3b6b0874345af147bfbd0f29550637. 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/USA2P1604445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63892cb74f0f0a02ad09a10166d1e59f9f1068e3ac5b8b7fb8456e1cefda16a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:14Z), 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/NLF711704530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11f53e9dffbd4462cee1d4123e035d346ab579281903dedf944726a18c4583d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLV62004254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd934f7cca23049160a7309f91ca6a51121def60d3d240553bd9f3a4df1a5977. 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/GBKQU2444664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2db5661bfc960d8da0011ff759b53b9c5ee9609eb5649b77682f104c171a80. 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/NLHR22400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a95ce4518632cc15ea4efd0733310c9822d296afcace3464a4280eb3d2b97. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5FN2572041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7385615e8131bff2fbe4eb26957f88e65a31becd53a6a4798736c7c9cf47db8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5FN2572066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43967579911ac3c4d509cd48907bf221ee83b933bd6961453f3d862879163b50. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ5FN2572093.
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 0x6bef76316adec77e1ee050855699062bc3ecfb2f075c036726d8dd2cb2825584. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GXABC2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a54121575199c37480e44569041335439f70c25095a633fab07cf9ca0ea03be. 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/GBKQU2276315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c99f45e043ce495bdc5e683a32f7568eae26ac360eef9574bca647bec332b0. 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/USA2P2314953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d7b569dcaac1247046473e0eda8a2701e3713a442fa98b4da8f32f054920ed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU2185116.