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 0x6590b5f4389230263cc43daf7d357c14d06be1d18cc243adc736d7b6c6b91726. 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/b19d8754-3c0f-4e6c-a3e4-712df581eecb.json and https://artists.proofprofile.net/proofs/artist/b19d8754-3c0f-4e6c-a3e4-712df581eecb.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 0xed75b21f42add40c3b64261a050579af70aae673d334ee1e5886c67355b7edb4. 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/QMFME2319825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39468171996a85459b53d1e2d33a83e34cd333ad066d126a9e99a428c8e7638e. 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/QMFMF2388011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5ac79ea0730cae2e49c1470a4bc9817e4130a9521997ec5d19bc4f7d55a110. 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/QMFME2320539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214de09d0f912ae3c1ce47d95b56b219e683fd09511f008f17c5d48f51433921. 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/QMFME2322398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab20cbd6c9f48eb82d7489827beecdb39f3e5e10c2495e5cdd31856fcccc4e. 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/QMFME2330079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20dcf3c44c75040fe68f825db45f963464e86d01ef2f307cf486966ca7ade1. 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/QM6MZ2492250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c02f0e4923d35460817b3e0ea7169d5bf068618fb3be42666d99082e8301b7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6MZ2492251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b516204cb3985e40d013ff02541ffc258f14b834a5fa2c3878eeafdd3b2ee4. 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/QM6MZ2492262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3885ff05ba843c7e9518be390772acd271a642c97f1c3ceeccf31aa18011bac5. 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/QMBZ92328118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afcde7d080ef9bf900ade9fd7866340d801df58725eff5d441dec7d576b56f3. 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/QMBZ92328127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efa12176f52635a486e2b689b1a21a0090eec4ef6de47c0b2801eb842901700. 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/QMDA62242477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47f3245c1a142e274cc00d2e6ed2bdba97fc18f3de95da6d8af662f1f9cbe1. 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/QMBZ92269207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ea6b6ada03a3619971219e6ba91c76c9a7b5a242a6db15620c6963e5bbf644. 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/QMDA62242487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf45a13c302719b93fd3cd6fd86a489d32f1333d6df4de64c226ba7ef67479e. 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/QM4TX2505339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a70034996b8fb4eff085400f604316e7d1cf91ce9efcaf9d19924a46feb21a. 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/QM4TX2502571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231ecb96b62d173b140824891afecea5d52ba62d68a09b7710e02d4e96a6d837. 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/QM4TW2558844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc058ed4f2cdee87f83d2ca395b3fb0f1309ab1af802b14f3c03c085da02c2f7. 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/QMFMF2414483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32505eb94dfd950e2eecb403971cd6745da9a5e5530202bae31f7e1d8ac3fb28. 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/QMFME2475840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa888e71a01369473813c898ab83192b7702af06be0c8d6bbea45572249ed9146. 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/QMDA62495717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af8e9277424ad3df8a442d17e7bcbe5489de3936fcfa8c98c22d730156e538a. 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/QMDA62424768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d114c15b758ef6b5b4c69eea9028ea1c84b0e18c1c2a308723ec0723b77ebe. 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/QMBZ92453148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8d09535d1b1c3eac663fd7c6f139a2b38b4e64acf2d72d56a41841682b797b. 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/QM4TX2488509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34333b48726e74e31d7de79501379520dbceda894969e01a36d08a15d3324c22. 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/QM4TW2484359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde72bba146547b94f1cde73d434148001fdc666fbafc1ae66a761ac90183c941. 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/QM4TW2429667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdd5ed463ccb3c99555ee3ce2c788abcfa7cfcc1713d317fb718fe1109c605a. 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/QMFMF2373499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458064ab3af1755d61e21fd5ff2dcb21bd93d51b06ee35cbf87d7c348ba712c3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMF2305216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa594a1624b5c9c343dd64093ae81b39fbc68105020450710c43fb8698277b086. 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/QMFMF2317045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fe9f566218271f6f1e51543fedcd5d75d29f8ebb8300ec7cc3047c3f0ce01f. 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/QMDA72384910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b9a110e038e8998d6bba70b99bbede91f07e54667ea009f964085d59175ac1. 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/QMFME2304708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90c76fc0d0ae5a0a38662aeb9de83f9d7210c3905d6a2b06d20594fcaa32584. 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/QMFME2304653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eda59dcf28dd4f3b2d7cf191e80e0613f2261cb8f7ed4b4de7b5cb6bbf6a07. 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/QM4TW2312304.