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 0x04eba72927c67a9aa0cd3215596bd99fa076822653b4d2674188b9d3023bc5a8. 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/ed1364fc-d18f-4f0f-a037-02d305c26d8c.json and https://artists.proofprofile.net/proofs/artist/ed1364fc-d18f-4f0f-a037-02d305c26d8c.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 0xc0d9d17e56f86c456c4db168e51814b48bb7031f5f3ddfcfff80fbb1b382dd47. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:49Z), 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/ROCRP1002821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c46b8f2711f89b4ddfb0fc715ded14fd02667c6c99a1fb26cde7cc728c368f. 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/FR59R1918953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c8f16f5526610632c526bc40bfa6949002b614a8abc326b5f0f1f841f095c5. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR59R1918954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad6ec373cd9ac9705370e67702720ea10a8effa84697c18ff702ea69c382dda. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:19Z), 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/FR59R1918957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ffebc189975c2a9edf3c417a849289ca573cd890ddcabbbfa154cb457ff872. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR10S1975716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8348bb3a41be2fa4fa1c49eb4122b6859900760b1e51fab675bb700123d9e1ef. 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/FR2X41994283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee77e5491f0b936942271ede9f5028c679fd09d3762fc86412bcf5b48d34b9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR2X41994285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eca65e52dae59d975bfd79d7336c4657b7183c43a102dfd4e373846ff07a5d0. 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/FR2X41994286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b15620df8ecd5e20ee58dfa3d645141d63ce91355cadd90a5f3cf31b7f23b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X41994287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6709f2f524041559ea341cf571587c2bf9eefd05b0798332e6b1a5a5c28fd300. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FR2X41994288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ea031ad7c28d3d6dc3b55642b8693d06285e05f2844820e08e68f35a38f9ed. 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/FR59R1812553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e90ae23edcdfdffea2b776fe7e6d45fff997dd217e741d4633ee816129308. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:02Z), 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/FR96X2051757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b49d7a8a250b5fbe678f3c768ba4e3d6f797919c0d0ca8fe750009d0429f29. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR96X2051760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7eed6d8f60cede18a462751a67794bf3de927c5462a94c05bbcdd45c18e535. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:32Z), 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/FR96X2051763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8b2b11b504d082dfafa29d3ff5b4fb1bb67436db9626fedb7565c2cb5b5a98. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:32Z), 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/FR96X2051774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ccad54cdec530c94057310a6cb01e1764b2ac21b9bb01a63d3a80350b95bf9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR96X2051775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112d846f2318112aeab3bd475daea99d9ffbec97882df1b7268c88e46b6fa921. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA052025900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e7035f5ec453a54b2545ddc23329742886518ca95737ce0b92e78891b61f7b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:30:15Z), 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/USDY42227640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77048d39e867bf449935757006c97b16060ce4c6b3986124047022c9dfd2a9ff. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:49:57Z), 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/FR96X2360511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65fc8f775caaa0ac2bc4d918b67fa2827997d131db236ebd31b79c33dacbf90. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:50Z), 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/ROROT2505280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e360539e7c367b39bdd2f4833dc0834bee1a58e20cc14e1760c8febfe12d4da. 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/FRX282495059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc73020266bc3327f4c98c4292e60bece8ad867bcb2256e3f99d78508f525175. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ROROT2403110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81a7d30e075a7013abd22b3662131299df08fbd59da8d0984f7014462b9100e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ROROT2403112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7109402886c26458106a08206cc77610ec5b9be1c232f3eb2d069287e3e4ea. 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/ROBRA2405219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b2c5e6be747d5c4e6f5d8c671a13751cb019c9fdac183f203e4c465b6b74bb. 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/ROROT2501200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a1487a37b39a4a1500c08acdf647f3aaa65e25576047e5b76160fca9416ad4. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ROROT2500600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820eaf313acab56f272f643cf1d86cb8e810808badcbd1f170a495a51b2c834b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ROBRA2502572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4ddfeb420c188f0ae003e62393ff54be523d4865dbb094aa5b69c048a993d4. 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/ROBRA2502926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa888a962285e1276af75a4be0166f4f4d1ab10ecfacec5ad506cb0cfb19ac10c. 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/ROROT2501510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf374cdfb2b868c074621e6ec00ae7ed90a34ea3de28a3fe76642f02edf2c948f. 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/ROBRA2505496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcc33b31ff6585063d619b73ae48a1a47c6da6de416f597e8f48d03b9c901ee. 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/ROGRA2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea43cea5bbc28fc85eb964b2e572cd7b0878b81079f76bff250a668ebee5351. 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/FRX762241243.