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 0x5a30a92633e19987e99323b9d30bf3b90d263f1275c7c4f565a9de2ca8d3e701. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8b9ffc4-8ecd-4892-a010-e93e9c1ccd8d.json and https://artists.proofprofile.net/proofs/artist/a8b9ffc4-8ecd-4892-a010-e93e9c1ccd8d.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 0x87988267bcb378eeb9c11cb6ea93a8f8f53c82a6908ebab2695e708e51fa022b. 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/NOAMM0400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d47ed5b8b3de7b63480c8a10e3cbb0559819b6b192dcec196e8cb4d71d5c20. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SEBFO7801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdfbe508debb00f61b114c62072cb39b876061dda9cca06317031047000a232. 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/NOUM71102166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdecc92f1793b5b9f814c08f8d0b9d90bd003a94e3ceda2922d2bd70ef570f1. 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/NOUM70500543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa8031aa4e95531b2bd493b73f7527571a70059be950fe0fcb254fb9a2d292f. 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/NOUM70702719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd9468ae8bafff749f046caf2f779047fce1131e6a4210b4220f04cc4b1a63b. 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/NOAMM0400434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee2a977bc0ec1abacd011904ed50949e20f59417ef8c2aa098da155c1e7d371. 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/NOUM70702079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaa2093f0a06ce0a407cdfdc1dbb4cff781c7a450b7ca37975cd5a1415bd39a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NOUM71102154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132f789de579f92c1afb93f79bbaa2e211b400032a9736a1e318ce249b80c06. 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/NOAMM0400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105399a557c33e7836a4a37114e56fc3faff98fdb89becf6d4d0ed2f3aedcdd. 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/NOUM71102155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957cffb914597c96b39f53ac7cd9a1f5447e27b7d0262f8aa7f3ceb0f3aadc7c. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/NOUM71102169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1e331f6aef9768b49068204249a3efd530be6c0afb65aa448ff0ce1d64dd9. 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/NOUM71102156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bc097ceb0d4c614e5d51f581aa5f1f6aef4bb3818ed78c1a373f0d38521857. 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/NOUM71102157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a24ce92f84b7942c1da97904484de4e9338bb6296c825fbe872bde01e343c80. 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/NOAMM0300743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d91b1dc89a58eaa09adb409cdbcbd0957c669a80040c7645a0886a5ea3a5b37. 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/SEBFO7504050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05564be75e81aa2ff2ded66dc08addb9335e25b66b0c9a3e57abc9b9ac053118. 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/NOAMM0400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee28110ae5af974fe1782af128a771894b52867659c7a80fcee24bcc27b195. 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/NOAAM0012020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6242bf6b42b27cefc3892cb9fcceab8fae58446c50e59ae3af2159489387e790. 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/NOACF9306230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60b05989607d1c1eb3108a10737991e9da098437e3f27b1e67b1884cca6ec7a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOUM70500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e37032ed33781c139bf1a84cb51e39afba382c32c6e6cdf9486c58ba5536ef. 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/NOUM71100649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a68f93446a8864209e8949617a208d89e40b6f1de44b6e5fe3e779e5ad0e01a. 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/NOUM71300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdb1779c2133c95c7d731f124833efc646007722ce82568ba1e3f475753a85d. 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/NOUM71300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290721172ac600be8615545a9165f879c878d34797346b45d4b851707f6b8587. 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/NOUM71300217.
Rock around the clock tonight - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04d9730bfeee3f65f8420d6af306bd26ab3e619479be8f10ca8218727708036. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOUM71300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba32eef269f405be451c5278596803103c67cadf74ab8d8c465f8b1d43afbce. 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/NOUM71300220.