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 0x701082f11e7680401aa217a64bfe67587e472508af477ef8c00bd826eb337770. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c23f07f1-e5b0-4658-837b-461fda9c0e77.json and https://artists.proofprofile.net/proofs/artist/c23f07f1-e5b0-4658-837b-461fda9c0e77.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 0x7ffb2e93c4258258165c4ae86afe0b4cb73bf84adb6ba8a659eced0f41fc065e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE66N2386845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bc31f811b07040f7558b9e7bce7c183ecd44c07cc99874e05e9a4754820e59. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE66N2347088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef291b6608a22fbe7d85e9a02f28d7c686e24d44c59b428876221aa22284bf2d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6A92371162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccadbab824f93cc83ad65615088b121ebfb80ac9d3ad43ff6a672ffffeb7c764. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/SE6A92332425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc821edb2ddb5436cf4e535e87878c81c90d6a591103ed1e8ac0beba7ee732024. 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/SE6A92355067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb0d8cef7abce5d15de55375a81bdb018cdba160de753cb578c6ffb3d95271f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XW2312935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757703710ad929329763549fa1ddc849ec8333a06ea3cf93f379484dae93fb4e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6A92361272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd43633553134fddca2a40968ef4a9c73b2b5ba72b81507b1451725c61a2fc9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTVM2342217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc1555a0b69abb2b8a461a901992c970b46654355ed4040203109e48642dcf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTVM2342208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f3c976e0289eb74d4240924c2415bc13e7eb1fbca3450f379db5d1b06b7aa1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTVM2342209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535739a15e6331099b47571c0b5226353dee955d1b3237f49538cc3d3edafd31. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTVM2342211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0b63c8c7c7ccf9f734bf928aeb8c28171e07edbf39e5e505cdb63d898d2640. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTVM2342212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3e42ecc8c74dcce6b9e54641f0ad90f82af1ba2208fed4e5db74a25fcf03fd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7282407271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ce293e87c94727c598e6a772993b630763e172e32602369d0d79fc51ebcf35. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES62171563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ce293e87c94727c598e6a772993b630763e172e32602369d0d79fc51ebcf35. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES62171563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34e14e291e449947b0ba2793ae9d5687b8ad8c0321514b2994ab2cf6d6a16c2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:48:36Z), 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/QZDA62391746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73dea5e08093009565529863d3e20e242ca96eb63aab9e792bea6a9538a46d8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA62391747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa931e7590d1df8ab07737f999f9fa0dabb9e07642a1dd24b05c335bdb6ebb7c9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7282361368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9144a4e446d0a8bc02392925e0b480af221ae0e3765138b361dee7fa594e399. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZDA62391751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa143776e76db36cb599b978e1c7a5815eea35ca1b2a1e278aa4c341e50ccf3fa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ32318505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40cfbe69519b8fe79b12992e5048cfbedc5951c9622679efe07b7c6d5c93f16. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB82456737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ff8bc4792820f66dade4dd051d92ce8dd056b59f8bb5f245f68c56e5e0f34d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB82456738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa248f526469a9b76cf9931c6c11ab62cab7f246db9bf72ec8042267b45cd08. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB82456740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb9486e9051073de475023a2aac52399e3dbd7acde6d413011a2e517db09ad8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB82456742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d852941341d2a61e202f2dd2086f0ebc2a681fa3df3f691652a0139cac2453. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMER2385188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ce3047bfee930f9c662b639ab7f61acd519f5e138f37f5f42303f64ec60910. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB82456745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7566dc2c0d5758598de5441b9c774c167dce54b47e25ccb7f5dc8e5f2ff40e7d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB82456746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23cbf840f16ea6b69f8a72f4f13a3beb036f220e1f12835e979bb0686c9a50b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN22219380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da3fed82241a6711918f565faabdd58778a3e65d7f33c42ab96296347d3c1f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKXN22219392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf836d635d09ea5e9ee6232ba7262f6c234cdacd86eb87106735c0dd388d0d1ff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA72385525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127a7303072b12fd3561676e82b618b982274c34a54e1b230cfec381cbc43fea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA72385528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ef5757c4523697d9ff5a82b9aa68fa48ce0ec7dd7fb6b9942db29c900b9120. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA72385523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52c7e41499b09ce07bcca2c99bfb7fdfc50360537aaa8da9cff331a685e144d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA42423647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062be764d2a13cc7a2911ad42a2d455a0f23cddb4f988bfe5c55e29e5faf33d7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA42423656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ee63b05703891965ae585d2d7512cfc06915b6821a4d1d6f497f3accacdf91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE6SA2373299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7516174d2d23dc85d04a7bfda4cf4bc4813999b1833b8a4b5332663c2d9049c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6XW2343200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0464b16e24484310b6d73c3643c8c604e67e55ef7207c6c4c56df5c6d49bbf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE6XW2301777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b1c31373706805c6b20fb0f1c25dd3db9e95771ddd2d82abc573bff4bbd167. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNA2060331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fcdb56fe6bbaa588c81f058113b78ab48ff697035f297ac2ef0136590735f2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6P42462493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488d77483c78dedfdec5395d53ea643759abe318cba4b549fef8892b09ca8115. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWS2398078.