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 0x21fd3f05a50ea0e88752b91c640f6554155106d25ef638f8c60ba2917d7d44aa. 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/ec5bcd27-8282-47e5-bd41-ab05ceca3523.json and https://artists.proofprofile.net/proofs/artist/ec5bcd27-8282-47e5-bd41-ab05ceca3523.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 0xbce9643dadcedf836a4723b153bd6a3b82abc4a30f48d5bdfe44f4872a550877. 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/QZWA32200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c677700ff561e8c3d1a1fcb676f863be1f32f5e87012dd85f7e6c65d257d3f. 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/QZWFQ2323154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95d4417736044fdead6b6ab27534a2ffd8a5a15500bf7de4d7c0081caeae62. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2323372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a4db6ccbf7c22bb0523b5cc92bcab92a3b6839fb0b0636a9f0d379b33d439e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2323373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb976656c76556ea6e4a5a003165c33c529334af4c287c369fc86080e8385a3f. 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/USA2P2251920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bf9109aada99c24b11de01d171ade1dbc1ed89a3b223a3818a25f1490f1ffa. 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/USA2P2250961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac7b867fd7501d8b0bf609e13027ddec691cd1d67c2c89d14c6855214a7b1e4. 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/USA2P2250955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8995e34748518fd9b034f742c8fef4c05e0cc7064a9907b5772e24dcfaa6900. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ESA012263141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f765423d51e6f7e32f234edee3c1fec628e2cc56c92f891dfd08714835de5. 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/UK43Q2291279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d32e8a504d67bea94c83a985565a0513ee7f6b543c495000b0b3b10f5cd299. 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/US23A1542264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d32e8a504d67bea94c83a985565a0513ee7f6b543c495000b0b3b10f5cd299. 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/US23A1542264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaca8eafa19e1de8f56bba085831d1f1223b15740668dafaddf15c234e9fa8a. 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/USA2P2342952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac5c4b8b207dc7b193f9640d4a723b9af7b197847d0213ac63d6c98cffaf369. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA082455037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b60d00098ba2076839976ae709f632838815e3070f963c1bb09a42ec7b1c470. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUMEV2483211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33d7f4d56d4f7ec67e16d0488d91e70c337c022a663110f71453190b8f1ec72. 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/USA2P2352909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f639c851194e93c32d14c0ff24ebcac4e0718d5a4c44e87db25892294d874ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2352910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9895c13afa5cab392a1957e3947349adf2b07345cd25e09467886a6c52f51c1. 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/USA2P2352911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b84c8fbf6086d28557231752c1eae12eabb8908147244764a73332c75362990. 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/USA2P2352912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10529a1ae3f8a91a61f1ad3f58f41b1d64bc385b9328752f981a66934cfe5d4. 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/USA2P2352913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37c34001902fe513803ceb3bc83a94bfacb7e054ada878389e08ac6ed00bf8a. 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/USA2P2352915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf458d4f1b4fe73c28465c30204685695cea65d2f68fcf8debeb5d4b386aa2b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2352916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e844e861fdfae661a0e2841623dd9466bbeb5f00d653779e35ad5b46e001699. 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/USA2P2352917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded075ff55acbadf312a166eaf2ad87c2a155d6a46c767655d666f9cde2b0a2. 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/QZQAY2468988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffffaeabf22c54a7a02effdb920239dec26cb79867c55670a9d24d372bc9963. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:07:06Z), 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/QZQAY2432216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c3819bca789fe859ca8f41a4c86a51aad676e4c65d74d49e9974d3c3970f7a. 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/QZS7J2357675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aa2d8a1fd35db72f94c4c28911ad2a20f31e024ec02d40cc5a0043685b5230. 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/QZNJY2491835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cfe95c704554630f1f81772f6239a41177a0e727b5a9cdbad7a2de7c11eb30. 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/QZNJY2491837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaddb8e6fd70f52148d4388eeedc4f62ebbacd8d303a1efb545227d6b5110199. 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/QZNJY2491838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83efc904c141a0214564013b975cc3f14ae9dbc218410637e1aa3c329fcfea7f. 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/QZNJY2491840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287aa2e19b82e155080b2d24ac089d6b5492f14acb33cbc109f88a00d2a305ab. 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/QZNJV2491521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd9bb06480c3941fbc7fa3b9a37cc5406f188ab9f508f2c5c6dc566f10515e0. 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/QZHZ52112547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11a4d5e2c1ffa07dc837de6fee4a8b653aac59c4aee2e6c6b7b76b051bb2f08. 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/QZHZ52112549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86933beff312597647f0099f872925ebb3bedd3690f66b45cdcf790dddc7dd3c. 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/US7VG2138739.