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 0x60ecaef26ca70a95ceb4d62c9a4a8d64c78f76ff547dc5b703c5c37671f515c2. 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/82d2f5a0-bfcf-409e-93af-04e0c4c199a0.json and https://artists.proofprofile.net/proofs/artist/82d2f5a0-bfcf-409e-93af-04e0c4c199a0.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 0x3c7118a35f422720d54a9f101ea1727afc6eb4c9ac600069a92502872948cf16. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/US7VG2471561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f6b14dd5660871b81bffb41e5126b169da52445df28700ecb62c1ae1e4a805. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAHU2433772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02211effb2d23db33ad4f3e7271cb479707089ca72e32d948999023d579752fd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:07Z), 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/QZK6N2283096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac07b9fccbf5e65c5ec71a823d2b71a5f165ebc423a124a624bcd9278e6c5ce. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBLFP2361727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7958d9e6b4a7738b75a9eca529141deb2644dcc11fab07ed89f7235652394c93. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:06:14Z), 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/GBLFP2361728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb748d83f6ce4d6959bdd86149bcbfe10e98013bf0aab1147bd0743d7d3a6be04. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:02Z), 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/GBLFP2361737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1b96fc2922905df9700275f9c60477ab83fb6090ee75e7a5274ddfe5863cf4. 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/GBLFP2361732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acaf7bb427c4f526ad1d111cc930e1bed10890d1f15d372e6e4ec1ace140035. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:57Z), 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/GBLFP2361725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da00466739ad81a702ef4f9ae0a1619fffe7c2850d3e5bd1268f565da021673. 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/GBLFP2361731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a59d1b46b069e21fede8fe6692b72c28d3e88e56b4b1e1269f82ff26795515. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:41Z), 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/QM6P42495088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875086b8ca78be50dbd27a2155a696635f58cffd2abc088d3a4d2bf598ff3825. 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/TCAIR2415136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3dc13309a920091e73d3ce7d19a6079be2ebd8ebabd5702832fe234758816f. 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/TCAIV2456113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d25663503e83ef0ac570a1d0091d055fc2860d6fb4a316c9e91cae96646305. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAIX2401746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce97598293f71bdb66e53fc0f34fbd1dd3920e8137adc22988aeb4a6f7e0e4c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAJL2593170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6788c60d2731c38135d3d646597303ce09e307f63afc19cc51a180c191fd6b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCAJO2595821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd325a6470cdddc70a37f8afbc216630aca575021f2be880387e985fd184ff240. 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/TCAJO2532133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9868808ce71ac13b81973a650d0954154b9d0c8644703ad18e3165f9ffbf0a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJV2570427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad081645e4d1a43e6a39e49ef0912f9f99b87b9fac55c1761871e68150b5a4f8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJX2599418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb776fc974d0123bca042ddabd631da7dfc636900e7a84982899d66f36fd9bd6a. 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/QMDA72535310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1dfef3bb09e31c9d5bb8e98f8d043c3f9893f676c595dbba908877d5af5bef. 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/TCAJY2553330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62746579ba588eb900df4b98e25c28176160f98a68b939dde5603f695b78dfe5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QMFME2511915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003ab0fbba98391cedbbdfa8c4d6ee90f50c1496d5d0ee41ca734b25ec10b68f. 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/QMFME2554978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f1da159f31a87f1ef3f189109bb424fefc197e865614c5f33bc5109c74bec6. 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/QMFMG2529294.