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 0x130a058c4a2c7295626efc41f613dd428f16b63c886113c8f88a7bde0d6baf49. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1e11372-b1e5-4627-8e1d-5d15763115cf.json and https://artists.proofprofile.net/proofs/artist/b1e11372-b1e5-4627-8e1d-5d15763115cf.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 0x5a146312dedb1b34730226de8e60ae562fecf52c81c998b6064331a5262a2732. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ7R2406455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10028d1097628b212497653b2ae92c8f945495ecd6828ba6a5968f43523b7e2b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7T2404626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb838f1741eafa577ef009362f03f36b9466587fa9856c250849a6cc56465a56c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7V2441853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a109782f771c7213b94e365e104b4c132424edf2319e64763476acc56c6fe5. 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/QZZ7W2496896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf67213e1de27033cf0034fc31e8224b76f97b37770c53fd8ef8aa0e456800e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZFYX2570373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2825f9e89c3a683cf361863529f704b50953f7ac7457dd89e3089a183716f7. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:29:45Z), 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/QZFZ62562331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1694332552b40821dfc45a9b7ccd92c0771f2d2b5e59aca54fd36e3f8ef5b8cc. 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/QZK6K2530642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1694332552b40821dfc45a9b7ccd92c0771f2d2b5e59aca54fd36e3f8ef5b8cc. 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/QZK6K2530642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6db1ea980a4fc4b1ba5eeabe56f008c1a05fa2c4e342cfe7a0adbe64959f23. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA72534097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6db1ea980a4fc4b1ba5eeabe56f008c1a05fa2c4e342cfe7a0adbe64959f23. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA72534097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dd939e969d56d66128f4856fa10054f97425d594e7e10e70d6ec53fafcf97e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES82506685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964f213ff216f08ea0e3166ff9205737b1ab8d43e23624cc543de802f452a93d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNMV2578835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c64c1f6742157cf6f60fae77e533608c31fb8a37ed435c9c1c3b3bc2b341e0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:55:51Z), 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/QZTAU2542150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd787ff0654992980de0b3330f5c129421ccce4bc48f5ebc9302e01571b313b97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN62520781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26af11985688148b7f27628e9492ec8c9ac47dca9a0725a1d42adea7259d224c. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/QZHNA2566366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26af11985688148b7f27628e9492ec8c9ac47dca9a0725a1d42adea7259d224c. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZHNA2566366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c9b100b46104907bc681e1726870a479b5b271741a8430018297de42f08dc. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:44Z), 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/QZHNC2526607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d40ec5551ccd3485bd5826423cae102e7011a40cf1d3262691704ed70d3f839. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZK6P2517660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f8a86e7f4a43c4efed1a3560692095ed608f7e4238aacea6449dd550a3b818. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6M2518626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b75b0a16dd898278ae01cc3dd4c3bbbc675950327abad1def2d452c1204c30e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2549173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013ca7ffa48cfe9d05719236e6e944667bb644ba17736f9adcf91ae51d6d23b. 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/QZNMV2584454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5861b8918d99e02d96ed20d98a6d5953f21952436948e3252040e00263e007e0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWT2521346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf8aa7fe8063d4ad34d9ba53b8b3a441c0527fc5a126c70aa4d0ee8ecf92d1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWT2565084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ed632979a6552eb226c968719dff59e2a3c1955bad6c9a973236243ae5a656. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNWU2520506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e58e5cd0d9e213c0825c49016ff77d73712c3166833e571ca2daff50a764b58. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWW2527919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b111fa536cfa3f495291164cbc0be0a8267c512fcfcee2b209d93262ed65cd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWX2521562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae532835b7f3e0572078d1a6b237e8c689d7fa9afa3cf73ccce22ff2824223d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB82552860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309417ba5d405c0482f1269f7741b44b6135bc334c341becbcecc7b8c17cfa6d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTBB2585944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91515266f5488d97e3c299755066fba03c6bd189378c7c8e26d9564a9176cbd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFF2590355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61393c8070c508f781ebf4022e7f8cb6756f825058fb51662fdbddc168de853. 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/QZNMV2578838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009fcecf932f24af59818bdcc0bf120c5a1a8408e597579b248d2c687e6e104d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:01:04Z), 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/QZWFN2556653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149011f9bef8d92fb320b54cd2a489e96b4acd69b43a3a0b1475544e7c47d8a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNMW2527756.