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 0x352e0c6b9b330fb9d99e58df9c9eb13a2a92f936cac293f392a1893887d13f86. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8150482d-14de-473f-84ec-26953484e796.json and https://artists.proofprofile.net/proofs/artist/8150482d-14de-473f-84ec-26953484e796.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 0x4cf3bae43c56161bc0e058f3ea898ad0402ec847916516eaa3feace930c72dd8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:27Z), 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/SE6I32593847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74385c0a6c41978c7e4d9e88f8193cad3bdfc7308cbe4b08d62b719241cf8814. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6I32593848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490fb2b77a024b4f20252ec52546223f1bdd15371c9b7e6af1dc5a552a0c6c7f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:41Z), 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/SE6I32593849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64600e23d00b051c9efcbfba2fb33447501894bc234bafa01dfaddc313c5418e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:37:22Z), 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/SE6I32593850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d718b63cfea8599542870a393deb2e40acf0f51d873a9be51147193307fb38. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6I32593851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde58129fa0ba9491d829ca30e2f5d16843a5a53f71fc47db7ecb1a1593615dbd. 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/SE6I32593852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cfcc0069f2775860f2d38c68e9bc73852ef6d7dad77364f36e478aaf25b10f. 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/SE6I32593853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb887c32375f0c9247cb3e226807539a499c11af8076139a5177fab0f5e7e950b. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:12Z), 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/SE6I32593854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07062e67d5df4229231e3c9e9ec876c42b2380987ed1d650ccf05cfbc223205c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE6I32593855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7163bc58e82f5b79187d59cad1cd47a67010cebf582c84c763229040b9a86a0a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/SE6I32593856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b10c4402f5a9ae83e83ec6d9189ff3b0866819f0d3c00b48025951c0dcf614. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:25Z), 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/SE6I32593857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9356152b6b884ed2795d2a0d8fd92621511444a5aea7fd7d2226d52028542fea. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SE6I32593858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8be85b1f778dc317aa2260efba0c5a1fd9547af1a5f8cce75f3bbc9d4e92e8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6I32593859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0b5cbdb6dc93161bc08e911b890613ae3de051723773e3d3b7aeefc1a33635. 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/SE6I32593860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcf51e3bea8fa62397b88dce26b2ebe54133e507096959ae5af3e924d0e6185. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE6I32593861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b229247cc046182b43bba5dbf2a68a59d9cc21901aa730c39cb6d3c1eadc354. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SE6I32593862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e64a8983349e37a3ff948c34bc70ec83671aa55ca35cf415df1e63158e74ab. 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/SE6I32593863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866b8b93e4ea5d7e12dc1026f830de361c87afaa50dacebd6887cd59f9d4bf91. 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/SE6I32593864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ec224292641d7dc0a079b617a1bcc19f4ff79221181b5868465695bb695927. 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/SE6I32593865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e95269e6bcc0f989a45342362789bf6dff48794bad2c396db3d0e362553fa02. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:28:21Z), 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/SE6I32593866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b895327c2f864b04e2c679818faaf90427c43f66f94b01e37066aa39b0e5e2b. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:59Z), 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/SE6I32593867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdcb9a9ae6e7839dbb0a6571d7e4c06be3f9fd2d120c49443efd0893606d69d. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:04:09Z), 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/SE6I32593868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daa65fe58a9f4327b048037726f379e5b0f15c53eaf10b3e2d77147df97a817. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/SE6I32593869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5dc6e4bd2538ad3f00695fbfd4e572118b8c15d8500f893a9455cc59c4bebf. 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/SE6I32593870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afb6f443d5d27081bae2ac47c0757b1e9fe048582c3681d83851d30307d8e63. 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/SE6I32593871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e208645df9644ac84fb976f14f93e1c32dceb0c612301b6bb4cfc44938710d0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:23Z), 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/SE6I32593872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832aa96eb81b274c91b163c0245fd55a94519008c5457bfbe50c07f810eeba4. 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/SE6I32593873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71674b0f67473ee473d52ff18f0148ba891455801abd55bbde2c9addf79b0190. 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/SE6I32593874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e2151bd1047d6708ccf61ca54d1fbbbf4c61ba873ca47a9c2cb6003d18c404. 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/SE6I32593875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619d07e2b8df9007384fae8feca57fb9d79677263cdfc4933c64d60dfabbd02f. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:09:34Z), 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/SE6I32593876.