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 0x170da62216aff3989c04d131dacb3b72f75d787219e0eb789c64467df058c031. 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/af992dbe-cb2d-46f4-90b4-04eeb460b01d.json and https://artists.proofprofile.net/proofs/artist/af992dbe-cb2d-46f4-90b4-04eeb460b01d.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 0x11c866bba98173a24ea06c94d91d1829f3e17fbd1cb430f62978195d355d72bb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:53Z), 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/TCAEK1975978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcbb68ff3edeb5a4bdfd76ddd571aebd78c96ff06c7bae19f0069b5e68294ca. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM6N22079235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c125474c90048311601468801d98747118d6463801878354233038d5ffa58f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:15:50Z), 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/QM7282023206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff48187fbc67fd4f35066c1ff8c06023773d868ddc60e1125dc0f6adcb71cc. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZQAY2151772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a2db84f25d434ff97ed82866cab9dea9dfb62155c52cfd3dcd4e61a960a8d7. 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/QZQAY2174588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6cbd63ea31d11d30dda65ce54a8dd7dc466c4368008c7f24786ea5377204d6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZQAY2146454.
Pacific Coast Heartbreak (Sunglasses Kid 90's Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3361684b2dacd48418ddff071127dac66334fd7e211e184092b62bee1a7a63. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGI2288504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0060a3d4c7ad928800439e8254393c93be40d93b074a2359a4dda6cd086f0880. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:56:23Z), 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/TCAGI2288505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314639c24f4b3611276ca0e769ad0128ce8d2eeb8fe0bd2dc28103253472ca7c. 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/TCAGI2288530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581739df2c006918fe4f60b5d6be10da8a0d8f370786884c1238a0f6443117ac. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZQAY2249321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1b1f85f2a75e582c58a39efb79705f6a4ca21d1c504c66be908e3f7c571771. 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/QM6N22079202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1207ae1500cd46ee8a9f1484bf6952594ad3f4e65369e8a346561882c88bd84b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:50:06Z), 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/TCAGI2288553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5cd7d19e36171d035f7cd4579caf43377c9ef7c35b3b92fcb96584b929abd3. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USA2P2340260.
Kiss Me To The Deftones (Vapor Love Vocal Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54821cd62fbc10a3a04888ac1129e88c3fd52f3dea53d7ba7572cb2392450c09. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USA2P2353958.
Kiss Me To The Deftones - Vapor Love Vocal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54821cd62fbc10a3a04888ac1129e88c3fd52f3dea53d7ba7572cb2392450c09. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA2P2353958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcab4825166451d23d7206739fb24b99480a57ce83d907f8653d41404a8e109. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USA2P2424810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7b76305de9ff0fcc43509f2b232ea12b688578146d991460f22ca4e0f8cf2b. 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/USA2P2428106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eed1f99dbe8b011c14263ff09de400528a7e868199e20f1b21db738aa2df84. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:49Z), 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/NL8RL2435723.