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 0x8504a3e23992cd46afc787384bbc6776643e0b1941df401b788561f59554bb65. 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/0c041f66-7b5d-4840-9b4c-c737fa88a18f.json and https://artists.proofprofile.net/proofs/artist/0c041f66-7b5d-4840-9b4c-c737fa88a18f.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 0x5dadab6b9bfc1c115adbc8e2a626da032cee6e2277c8ebecf347b6a4a12dd1f4. 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/GBF079910660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c00a4f1dc7b1bb689794916945dead0dcd708e9d7055ca4b7828b7f4866122. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBF079910780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dadab6b9bfc1c115adbc8e2a626da032cee6e2277c8ebecf347b6a4a12dd1f4. 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/GBF079910660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25264fa69fc86b908d76fc51a88125cce9f7128fd34be4eaaac57aad02c209. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBA9920040.
There Must Be An Angel Playing With My Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9f5b383c7236bd70950dc29caf74c4f50291b496e85f7c98f233027fd5f699. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBBB5000023.
Pavarotti & Friends for Cambodia and Tibet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9578b46c01c2489a76f27cf6b6ca30e6c86687e3cf2eda0cbe3767474cfd4b82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBB5000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8624161e10ad873b2465b11ad601def42a28738462c08e8029646c34d5d82944. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBB5000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e1360d53fa4c61281d23754bf77038e76fc91e4488bb399185c8353fb4db77. 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/GBBBB5000011.
Brother, can you spare a dime [Americana]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384a7dbaf032cac19da181234c545ee2a8cd0ef39a500ba5c4b20e63befab383. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBB5000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175bf11a8b9aeddcb98d3b92324acf7cff2785aff0f90a1b36285263d2710540. 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/GBBBB5000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cc5299352d0b527bf058240c62593f3f02ffb637363b799824d0f5aceb65ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBBB5000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84e13bed143a43161bf9e631969ed40ad83c8c270dd1c39133f88e2de05295b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBB5000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d32a6e90efcc2bded2d352c5ae45719c7bf8dd3b08eca63f3e77a3bd84be23. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBB5000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10ff0a9aa99d119e3b97936592198c08fafe83b358ee066d61ef65684e5e702. 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/GBBBB5000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d8e91bed5a2a4aef6f95dc816ef8a17379793063a5f14305ae4df59acd96b4. 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/GBBBB5000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb991b18e8f9f5983573e53a56e9ce3d86d6418372fc1b11c2dfe08d8106f3026. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBB5000024.