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 0x6d2fcb891ecf73e6bfa41cd13e914ce37a392a5894b7161f43aa90d2b105a8f4. 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/eab79200-1599-456a-ab0e-d9934f63aa36.json and https://artists.proofprofile.net/proofs/artist/eab79200-1599-456a-ab0e-d9934f63aa36.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 0xfeebfcf687f377589c16a1e864d88a8825cd9a81d7cfcc4681579f81103dbf9c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:09Z), 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/GB8KE2328459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2710622bcec940b4d77b677a856b407556eaa1f1ce78967f8ae737f4bf0060. 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/GB8KE2407873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81f69b66701d486b8069dddaa8a4073c718f4b769e82f288656f15ab1b77578. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:16Z), 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/GB8KE2413035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29525eb6169f63503495475062ad76681fa3baf7ac8913f62d92caafa3807ea. 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/GB8KE2414016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a625578b21883f0805e19c2643f0e51de203494456492c9f0570edbf6618271. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB8KE2418696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4448fb3a5297fa81f35741484a78b64d05b25ec3e04f4574623498a53ebd2220. 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/GB8KE2419421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d3ef9805e7219e99f28705d20843500f28ea144e909912cd0289b51759366a. 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/GB8KE2420548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bffb01578516519412b273a0227433f636c427d2b193a8aafa41986f99df403. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GB8KE2421225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d1e915c732a839060b82effd1a410f1ce26ad37bea0d3b7f62c836bf60c4b0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GB8KE2422297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdf5a6fb373159c1176e245d5e2644aba837cbba2deb2717551e9eb5f476e62. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GB8KE2423195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd253ec89356b5b71ea562fe5b62d3abcbdba58b91971e5b3e7b72b64587a41f3. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:09Z), 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/GB8KE2423387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a8588847371b8ef7c83afc04e8d4cf1c73031e7b1cd17ef31c42030e7c417e. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GB8KE2424297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab1cc691a4423124d60bea8eb3ac81bd3b078fa892d66fc1ca75f9bb9ff4e4b. 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/GB8KE2501395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfece4a1e0a2d35bc470b76ec4f31d3737074af56346d9d566aef950f0904ee. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:25:32Z), 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/GB8KE2502078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c458458a5d84cc31c6c6ded3773e7cb1b7437a8fc04594198c58e0c75903c76. 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/GB8KE2503113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ee1540d24a5e98862441da97d7d62145f873bd057823d54592d1c556faed45. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GB8KE2503776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfbb222e2fbad944d760e66af7cd30f6bb2dfb61cf30c8b25dad6353c5e36df. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:08:50Z), 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/GB8KE2504613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79daa5b8189013dad3808e47978a8b01569dcb8e32b5052efb1b802f9870da. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:46:13Z), 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/GB8KE2506176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86226155163e71fb833bad8dcf4d69fd19693891d34085d039a0c1e3b682e26. 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/GB8KE2507030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124d8209b87ce61b7a94fdb81eaaa675aa05e121a9aa860604bd97de87dba24. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GB8KE2508315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3480b3fe90b723005ed35384ed381566881b60dd358e8f939c116f736900a6a8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GB8KE2508911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bd419ecb00679152d2436d2f4f48593395ff1c2010204d30a7d482b6e8f48d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:41Z), 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/GB8KE2511299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe45f7fda5934359d54405f2dbf32d4bb43badc9643745c9726a1225e3dcaba. 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/GB8KE2513075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0879b443e63af9fdf4777fc7de4ca9c24cbfe2868bd6661023a1b7e077d838. 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/GB8KE2514490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5112265ecc3a8cffa10f35ef0b37252e8538ce8fcadd48f73dc435b6915e93. 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/GB8KE2515044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4121bebca06faeddbd0067aea8ad541da847bfe3860c2a6d2a7681fff8585af9. 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/GB8KE2516537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510e655e41c65540e5f157631369984a13bd706f170a248d599152154b34e7c7. 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/GB8KE2516887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9142b62214b9f24197521deb88d45835681291442336e9c12d42f20ea867143e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:48Z), 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/GB8KE2518758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bb654bf2afe8c92a48fd019d05694c32dff346cb79e40744fb28ddea528617. 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/GB8KE2519199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe733e79af9dcce4cd07267d14859201c6ad8cae93042617fd75d32e032aba726. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GB8KE2519730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ac8e69f9829af6542fde09ffd9fc43b591acbb95c937c930bc7f9d2b526b61. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GB8KE2520254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d367ca39bbf08ca197b9fe38138e09d9ed5513ba9da6550b290c0afb7f6ccd. 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/GB8KE2520642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc4aef06b66cb8006035680811dd430bd598e88a2a3bdc6190f7701267a8078. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GB8KE2521140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a60db8cf045e17bea6158a94876225f212bcaefc1207fe66095797a061a4bde. 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/GB8KE2521541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fb0ed27f3efcf507c1aec0acdbfe1d4f63dcda53e3eaf711f320e3ec246e35. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB8KE2522190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3842fb1103959a1383339110730a9b75f983f807652258954e18873dd4cf44. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2523540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0613454e650eda26c2d519005a5f35b9f36b779b50b98015605a123e99ce1a15. 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/GB8KE2524267.