1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb99f61f2abaa2250e1905a15ca79d422fc8184e5dc108ed79aedc426a107fa03. 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/7f636699-f320-4bfd-a5c3-75d4a2fae142.json and https://artists.proofprofile.net/proofs/artist/7f636699-f320-4bfd-a5c3-75d4a2fae142.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 → block OTSBitcoinBlock must exist at that height 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 0x68b95939389959bd2784b4cd240be54b9bae2c2f1b981cbae7c8f240d0d8bdd0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMQ3X2101399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58fe137455dc8133874016924a294784fe3d327f26c64df7dd0fb4db0dc0b0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMQ3X2101411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ea75845a0877703a730fff4271057ed24f013faf314e0c5ec8c37dd0d91122. 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/QMQ3X2101467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfc3f8c703ddf1fe3fcabc40292797fb745d3351aaba23ff2ce244bf16a1ab3. 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/QMQ3X2101437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612f9c68eca8b7ecc42d55dc43d157fd1863f85c2db936d7f26a6438d52dbdfd. 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/QMQ3X2101428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8740a187c00307690a5d49c4561e259297750f7b0fddd25efdf84f9b94d4f2df. 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/QMQ3X2101468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eb64e4879a5890f28468b3f24d31981750d1c36672254e7716aa66014394d4. 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/QMQ3X2101469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dac480baa2980863def3aaa8ae1e88bd30061ce7bf4ef07de4814b85eb68419. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMQ3X2101470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7093a95d9c44f0875a0735acc8de9f6ffcbe1a161e548eccda2f5277b6d3ef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMQ3X2101464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba24ebc7955a3d5a125783dd80dd7a4bce519f941ebf86b04b087882e8d1d4d. 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/QMQ3X2101427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4bc2bbbb9f52390fd47e133fddafa952ca43df6693b825180522dc7fa5821e. 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/QMQ3X2101400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6cb8ebdf40aee97111a06b3272aa4816b334d6fdba594f69c85bec4f0b166d. 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/QMQ3X2101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5abef86407b4e6b8366a52eff664a120a006d95ee234d3d7b5a2d02b1a9e52. 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/QMF921850311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026557d30fe25995ed7aa92eeaf26f5268575e35a4b14b7ccc4bb6a72658dcb8. 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/QMF921850030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3a7c7321570e6a134fd0850c8f55f2cd7118666ecd39d51411349ef9da2a68. 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/CACRD1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9c090644acab792eda5948784d2ba0fc5149aa7c40785c78b5f12184065697. 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/USHM21672546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95681fd987d59718f68fae3fca53ebc27b8dc4e99fc0f53a7d53d5bc73e748a6. 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/USCGH1580244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeace110c45ab0330e9933753040baec9a5d36110ffd414c33b08c30cb13f988e. 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/USHM21496797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95681fd987d59718f68fae3fca53ebc27b8dc4e99fc0f53a7d53d5bc73e748a6. 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/USCGH1580244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e293fbc6454bf5d5d0a0a86eec0cf351cf33f6e0eb427cfe70f7b0ec5a9e50. 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/USCGH1580245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeace110c45ab0330e9933753040baec9a5d36110ffd414c33b08c30cb13f988e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM21496797.
Hark the Herald Angels Sing (He Is My King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6740643a480e4906bef337ecd928232a4376bbebf2d761ad9e800f0d81afba60. 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/USHM91325269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d7c3b09da43e4d824f7724db6f0448d11bd95ae2cefa1d216e85e5322fbeba. 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/USHM91325271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889b66f66647d42395cac9a936f3676a4746f8934de1b4c9cadc6f576d6f951e. 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/USCGH1591000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622bea426a6b491aafe0e1718d7d192ba060f9d0748ab0b8e48b154728f987d. 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/CAI372202005.