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 0x134f5356c31c1b587deb8b1e84dd51a9192d2a584101e43ff1de4008a8d7d59e. 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/9718a105-c522-40ad-bea7-bef64739a717.json and https://artists.proofprofile.net/proofs/artist/9718a105-c522-40ad-bea7-bef64739a717.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 0x0d25efc1b48ca4cab367eff704779fea67ec35e4f2fdbd055914c9d74a554763. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:03Z), 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/ZAE530800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a121cc6ccfabef2db050f0f5e10ee936c67b252b8d02a4f5ee647f9b6025adc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:39Z), 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/ZAE530800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397e2b9b3dbe64043434daad69db6b3bb6acd5fbab7b484463c4f99530fcda77. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:25Z), 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/ZAE530900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d22605d97f3fc7fb0a4342fec0ad3d623914a080087f8b3ed2e1d7eae490201. 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/ZAA011600415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd9d4b3c4981b02aeed9fe8c9b3f636cc750ac001c093f56df54d6ca0c855fb. 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/ZAA011600430.
Islands in the Stream (with Elizma Theron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53154b98b2a1b5d3ed1aa965d724fb5fa67bcb825ea654136c8c83a42c049aa1. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/ZAA011300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81e6437799ec95f67c5132afcf9e99ff7dd36e3f987f6b6459c657b0a8b17f4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:57Z), 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/ZAA011600419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2442f8054ed313de460f1f8cef65066602fc90b8a236ef9d19fb00c69d0d7879. 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/ZAA011600426.
I Don't Wanna Play House (feat. Elizma Theron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf855ebca3ccb22227bf0d5b4a0086c36272e4b6fa1ac0b026125066a0c478a72. 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/ZAE531000413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5b291c6243eb5edeb650083e58fbeebe69e2c1b8a6ce950a1cc592d3f91066. 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/ZAA011600416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec14783078af7e1804a2368d3fd16a5ab1baea0db789c63d8544cd4879523043. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ZAA011800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da12a20a1e79e7545b229aaece80a3737360888da5d0df052baf14e0c41492. 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/ZAA011800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260f4abd16f4d2275d87500fa844ecfaea0c943ef25ac7568816e784348b602d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:49Z), 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/ZAA012400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d9bc7ff894d313c2929e3c4ae81d0b5ad7d389c04cf31e383b6cafb1cc9f1. 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/ZAA011700365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa394196e0d2c56d9bff6c6fa62a822e4ac669cc52f2156f8626c1922b860e70. 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/ZAA011700366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5369116b1105c942b446a3fc22260854b8f84bc280c2e77125a09495ccc05f0f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAA011700372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73945e5143e53fcd49f5d38311e1a6ede552d74f41299124361c826dd6cf835. 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/ZAA011700373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ea5d7a09732cf365b59b6a26363392493634d56bd4ecbce9a6407831dfa1c1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZAA011700374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b775c399d7e0b679c3547adb5a73f7cc8d4dd846cac1845af51222f05a3b4a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAA011700377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d9bc7ff894d313c2929e3c4ae81d0b5ad7d389c04cf31e383b6cafb1cc9f1. 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/ZAA011700365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf855ebca3ccb22227bf0d5b4a0086c36272e4b6fa1ac0b026125066a0c478a72. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ZAE531000413.