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 0x5159f29979389ea2a1d921e5c7a2bf53367aa39d1428a92f5ab4f8c98d58f850. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7b770e6-f468-4f6f-b180-a9278adbc3e4.json and https://artists.proofprofile.net/proofs/artist/e7b770e6-f468-4f6f-b180-a9278adbc3e4.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 0x9c9adaccea58eb79ed397f7296f665e71ab1a31ee288f05069eae158e8ebc624. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:15Z), 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/QZES52530452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8d04c21fc049fe6196d9beb891f66f22a15a2bad9ea59cd854950f20611439. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:53:44Z), 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/QZES62508170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3209b101c720a8b399122c35402ca7ea60ef99e40914580755d903980221a9. 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/QZES62505787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4adb42e36c532582cafa6b8dc0f86b7cc25a8e834a77fba0828a1ab2e8660e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:31Z), 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/QZES62508277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e733d02645709c7cc8ad77dbf554d81f373d524522dda967e0409bc72a449d. 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/QZES62555499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f8f9fd4ba199d8d6423e3202c98d1c26f27e25bd551dc97ff3c3d051596f68. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:38:51Z), 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/QZES62567372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf536801c23afe8fc21c38a3fc8be0f454ea2abe126c89f43d7136db5fd084666. 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/QZES62567376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6d24403e9e2b2f4035c624ddc52f265c2ac83672d31a994abf3578df65130c. 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/QZES62558194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dac2075ddf46d90c71bb883dfbd45b59e03108c0b70f3ac22dd269fa75bc0bd. 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/QZES62571199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0455ed9dcf2e2a85422dfbca9060c6979b74e143e299663166113795e84d191a. 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/QZES62567378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9428e76c4f258d343f62442b2f04771c29b41c379b7e486508c558954fb3663. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:45Z), 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/QZES62558196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0dd4ec03654640f9347ce7ab8a4c9c04cc701ea03295bc48f04e40c9f33e93. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:14Z), 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/QZES62558198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449e29f3a41f7571ae67750324886b3abe7a19f521edc23d52e1b82f639f74ca. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:05Z), 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/QZES62565639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b262094723ffa7003ea2d0811250cd6317819a769c402e89e8f6914f31b3a2. 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/QZES62565638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed627a8b7678121bb483b552aede0d507143c38f5171175dfe271a794bce31d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:59:48Z), 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/QZES72569762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756bf8d872346be8804f2763895a5255d8fef64243b1c1948a14af3886af5925. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZES72563113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0ade563763d3aaa946bc0c7ca6f81dc04e443b8ee75bc744e25436cb44acb3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:37Z), 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/QZES72567533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ed20ee3cd061f2bded720905541b9c79c360b74d2644f29628e5c06feb2330. 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/QZES72563109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36848365684dabbe87009e41ca5227585f221d566c534c6ea504940744974128. 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/QZES72563115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33a624ec64b4df5e0e3f1ec42b2c76b2976a1af20bbe42ab9fdf60608a8e12. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:58Z), 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/QZES72567505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb338bc92f36a7912bdc88cb06f0ee653a4e2e186670fd9331eb6ec22604110d1. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZES72569779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997162afc728433569a4d377a65abc30812c5b4bdbea72839ab422ca2f1760b6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZES72563111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128d87e02c24ca01cda4cc6fb05f53ade2d76f50de5168418a343b15273d69ad. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:38Z), 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/QZES72561269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cfd1d9b630b1eb13a7d5deef2c682bbdad72fe730905f1d430cd4eed2934fa. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:39:44Z), 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/QZES72569785.