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 0x5ec19e0c5710cbe4d1d0c82de0967c341a7c7e2e48b26f7d993bc66ef511bd7d. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33c85734-6d7f-4cb2-b024-e7018c7c724b.json and https://artists.proofprofile.net/proofs/artist/33c85734-6d7f-4cb2-b024-e7018c7c724b.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 0xfe49cb627c38d767d5445ed7ec69b8e372a562d1e777d2dba420a169a7ae7810. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAHP2323549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101911689086b89fde553e960fce96b0c3773c587738e5e15c5f56e6aa74d018. 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/TCAHR2315368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf3490f9718386c45e29b27347218975b5e4394d29ad44db93bae8ef15aeb38. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:56:23Z), 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/TCAHR2315336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464cb7c1792aec1b2cf5b27cabadf54b37a01a232df8a2b7aebde4174f1463d4. 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/TCAJA2446054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb0b87d05e40c7e961ada22f4bff94ec668cacb1091f63afba80fda1aee6f36. 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/TCAJK2537293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a7d48f274c7d4218b2948aa4251dec42d01f3454162c222c668c9ee76173e1. 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/TCAJI2514908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f59c389b65a6e16585945bcbe56f6d4496ab5e9d2f3f9cfd791f559b5673fc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:19Z), 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/TCAJL2518425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be45567a0cd747192ac91a6f476b7ae1d88fde57f4bd25c173a6a261951ad51. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCAJL2518436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747b3ed4ce8a3ad12916d771326e72ee464fb8b28dfeb92aa3693096b7e1aebc. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:56:17Z), 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/TCAJL2518440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a38a2ee8b8cb769e53205a306a22b6ea6bc41f9632fd471ed0a0526bdb519e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:29:21Z), 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/TCAJI2525215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45ae7beb835ff10dbdf7c29095cf97239e76fccdb4db49b140ef1bf47d53a03. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAJP2552939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555dcf4d276f75a466397f2aa39c3ff55087fbf1ac957780d53df290677cc6d9. 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/TCAJL2518556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf9bbb51dcb82876d38c5db0b37deaedfc7c841d461d0d66d5958beeedf7c78. 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/TCAJL2518470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc75fe0b711858cd7149a749937b126c4d9324857033d5eb961dc414e0da75. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T22:00:09Z), 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/TCAJH2592880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe49cb627c38d767d5445ed7ec69b8e372a562d1e777d2dba420a169a7ae7810. 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/TCAHP2323549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fe6c0b3d6192541d8c9e8ba3b1fb2dd55c6d61b7d20eadef348effe9d30eef. 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/TCAJI2525164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416408d799ef0029e861944521709baec3176d8cd982fa3984debbce3943595c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:31:14Z), 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/TCAJL2518475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b26958db8ff8ab1991a9c89de154b2ca404399c628c724952f410cc1340e87e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:02:35Z), 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/TCAJL2518498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcae4a8717f4ec2a244c13ae194a38775a0aa23eaa6837e01a235ccbb98c183. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:17Z), 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/TCAJL2518522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd50d2ebc97ae30f9125f6400c75b49a6522551201165fba875c9ed76d365e2a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJM2569466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a8705c00841b14233befe932cca68db2fecd46e54c8736de03515a1a51d5e2. 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/TCAJM2569506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb0b87d05e40c7e961ada22f4bff94ec668cacb1091f63afba80fda1aee6f36. 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/TCAJK2537293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a59f33bf5388f75c62077031c34b959bb00240f110ce184a0c205bc6eaae96. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:48Z), 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/TCAHN2396910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad541fa958877229a43229c8b894811cf8dd8fea17c8a49d582a1caf459a4d7. 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/TCAJL2518547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b8345c1cb338eacb3f4dda58c7a34c5f9ea29c635093cd3fbf3bfc45a80b50. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:03:04Z), 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/TCAJL2518449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934d6c1504576e1fdc5d7ce270f49c1ab5da914777204998f3baa0227aaaddc9. 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/TCAJM2569502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2766c99ca5f862ef7abc38abf5e99c1e941850424c2db51f642f8572819f02de. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJX2516510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a8616aaf6f2cb854a83900baea62f85120a738e4c5c419a73db330bcd54f5d. 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/QT65X2503928.