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 0x8024f5e9b4848a56fa917b6ecb5ecfb512c24e4a6874ec5869b151bf83535bae. 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/befe5f04-ec88-4330-9414-34d49cfcf348.json and https://artists.proofprofile.net/proofs/artist/befe5f04-ec88-4330-9414-34d49cfcf348.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 0x3ff81c71f2d506780fd18597883bc1c3606fb87579a56c1c55bd311c61737103. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:13:59Z), 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/RUA1H1817580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a4fa0201f9bac3e986be3c959679b5f60dcbdd0b01c594fc4e725685ec619d. 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/GBSMU7024012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82b12895fcacde07f1d362368997ed83b570539996ee7fe01fc1857ac426210. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:16:21Z), 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/GBSMU7407669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82e163db99ea4c7ce1eadbc06d6361ef2a7bea79c8ade5edbaad9017e32c7dc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:22Z), 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/GBSMU7407671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dedf084326629838a061644b9838895737f23832c296536167dc2811b694899. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBSMU7770328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5578b6bce1483f25aec8493b960b5bb2392e09f1977697b91d9bf3ae8a7a4926. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBSMU7770329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72698b3647a2c99e6a9b919d08f8adf731036ecae106f83775ba671f9c208d5. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QMFME2230062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd97c7e97ea539d7a4da269c695615b0f1ef639a285f914d3e9f238bab899b9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:31Z), 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/QMFME2230057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa403c4a8a43092f14671d80ad93036558678ecca44a38c85b6dd3ca5614a8dc0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:33:21Z), 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/QMFME2230058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf6afb6e716507026cda5030aa81224492f0592a6e11ba16154abafa4506ec1. 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/QMFME2230060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac85f93ff07e40d53deca6cdd381a8cf14f4d32bb73a086a4be1fc7a39488f3d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMFME2230063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cb7d426a948e5a2d15b77553789a671998bf16b50357eb7c40bdd74618eefc. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:10Z), 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/QMFME2230065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091c0949b15290c057f91d8b74f9a0c636c86055c25a6e837a87d299bf308a48. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMDA72256032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf848c78d23e542accfa773ca250b304a459f1511f14eec0a8f2600b65d86c1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZFZ42236136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf79d1a8363a6660677d58ab5ea7a45264155315fa02782f1fd972d00db7e17. 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/QMFME2230069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516b906eee8c5a8d5b4a0541dd65d0d59059d3828425090f50d24315a39f7f1b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMBZ92364936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447aecf2ea63a33dd7572a2313bfc0ca9a385986b7f0ee5e2ada0c4828f14771. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMFMF2357675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f37038e7899e81e5e209c82a4953343e7f3c505ac64218dee65e73ac164a503. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:20:06Z), 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/QMFME2378759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447aecf2ea63a33dd7572a2313bfc0ca9a385986b7f0ee5e2ada0c4828f14771. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:23Z), 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/QMFMF2357675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfba1630d2dc0ed2f86b3b8e9b89867ed0e1eef092a82eba824e5064915a44ec. 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/QMFMG2367335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ff5fae92117f3d2494e1ea70367990124b6feff0f15badc15b5b11fbeaab23. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMFMG2367338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52e277148f4cd298bfe34621cc97d68509dfd649d5c396d080f58e8514904c. 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/ES84D2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf01252b10160eb8aba4126f2f622a7a9c6a0e3fa853cd0f70773d3a9d12a77e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES17D2101438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25c47d102006fbf46f7b7fde039744947956ebcaff9a003a2194d82d28433c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES11D2100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5c4f00457c8b070a0bc1e1956d0ef27ac30552316649d872f67895d7b91684. 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/ES5062411402.