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 0x1522da7bc4297a5acf8166fb0241b780cca95c5158625f11cbe24ee6b7cbd9ed. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be14aab5-73af-4182-973d-b1e36ceb25b8.json and https://artists.proofprofile.net/proofs/artist/be14aab5-73af-4182-973d-b1e36ceb25b8.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 0xd7c10e3312f0254eeda522d3ebbbbe57b2e00cef7e4e23a68eab283b14266f06. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:22Z), 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/QZKUS2209554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf277d004fbf5b74bbec211a991a157340adec3cb5195d0ff718f4c9ffd1d7d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZKUS2209561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc95482525621f2802bb3af089776752df7160fd2c8bd78783e0e32e27f9731. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:29:53Z), 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/GBLLT2443081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f725e501d7f219db0e9007c02fe8772fa554ddca80fa6334c13aed0c11a1f20. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:23Z), 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/QZKUS2209556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0e768ebca5bc66a004c1d5e7cf8cfad71378e5f5f0073f812335a58222bd57. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZKUS2209562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677cad58be5e72c942bf373f78dcf4db784d47ddb42818f969ccb43d4ee379ba. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBLLT2443082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd262d6ac54ed8d25684a9ab8f73912539e75fac623f27f773f87be64e1cf282e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:59Z), 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/QZKUS2304427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070d6d657f659ddd1a14160645127c0f0ca14ab0061d3aed080d2766cf736d87. 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/QZKUS2400829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b6c88850e885263d5bdd4505e13974ea3dbf370a87e166f6b6e0169e0ee5a0. 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/QZKUS2400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df341e37ea3148ff5a2a2de26a4b25ff34d46897354affe77667a7acebb7a91. 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/QZKUS2400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347dbb6dc5b1ee92727a6bddae1d002b402615334c37e1a264768eb777704639. 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/QZKUS2400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4abc04e4d463cdabe4fecbc48e0862f2f564d8e02ba98c867a016dfff962ea7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZKUS2304429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c6c1acc3fc4696cbf864431c692599e9256439bcff55938ac96e65af45121. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QMDA72477060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf200eddbc0cdeb7c86042dc985fcd6162f94e2697d93a000750e9158b97120d6. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QMDA72477063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52faa385793b413dc6d069bfd3a66b0b2121bb29adba35c15e83d0889294d723. 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/QMDA72477064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3c85307585496bd4b317e23c6e5bdf50bcdcfcce84cbe875989072c17e78cf. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QMDA72477065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02171c82a19ff2cffd94ec904d6df0fb1ccdbfdc739908b5591177d1c4b909bb. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QMDA72477066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a74dda6cdb2581da93351cddd25bc252898f158a271dfb86e04d2f7013da69. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:01:00Z), 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/QMDA72477068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1727eed4be4f0ab794bde2055436ae0ed3b05332a77693ce93c9fc8c0824b5f0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:00:32Z), 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/QMDA72477069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4379e5baec43ae4e0121900d8bfb486f5a4b21d788445ff7d489fba52dee7f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBLLT2510194.