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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e2e95686c5e33c68bb4103ee54d2c95a31ad68f39139544908b635ab0d98d. 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/c03f848f-2b96-4ca7-a075-a288f832d539.json and https://artists.proofprofile.net/proofs/artist/c03f848f-2b96-4ca7-a075-a288f832d539.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Change Your Mind (with TV Noise & Marc E Bassy)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113cabf27612d83b1bf899e7687681fe006c93a8246149e479e9b7b9c98a8b9. 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/US3DF2245231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39befd8c34b3162fbec92e78954541052c720f9b1acb4b42ad287c6649a7cc46. 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/NLM5S2302125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b26b0c5305eaf0d9690c91af6a1983c096328cdfd672f15d08b92dbb2be4103. 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/NLM5S2302127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0cbf32ed4533ffcd5689b1d66cd2adccb01662536710cabdeba2b4c77e4f6f. 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/NLM5S2302102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5af30acd67ae7749a045dd3d106848c15c69367f851248f7103051cf33403b5. 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/QMDA62303702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd843971c4822bc3e5be6b16d710f2cb3d7d4a7a7c7cfc2d8217d073b7418752. 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/NLM5S2302039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c89611d620ffa6380a346a5e647b929d67a51cf610ef050a350a32dfe2c0c. 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/NLM5S2302003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196bd275a958787d076c01abe534442cbd6ce762116ea2915cd293140f3249a6. 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/NLM5S2301915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb76b42094244b6d0c6f69df8d6f8e3e05e51b74446f2bfca87dc7679caa0b82. 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/NLM5S2301883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14835649d7d58a70bdacecd1fb3b809a6bc6449bd608a826cf1683da45b41fff. 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/NLM5S2201823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98621a8490465ae97af9ff63b2c48880504a5f29cbed28f0c266ade508cb5349. 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/NLM5S2201785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4729c8ea3c51504a64e78775d43d2e97f4ba4e63ad9a67b547225efd480eec. 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/NLM5S2201744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8487dc8f3455deb8fccca361b0bffdb88c9a48cc0f087e705378349bf71d7491. 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/NLM5S2201678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e3a6d9ffe7a9876dfcd522639ef3976de1692c2227ce3c1ca18f623dfe7db. 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/NLM5S2201606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7d1c9dcc2f328e3f20906caa07af85933f21241cca3cce8d97cc20b6edf578. 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/NLM5S2201577.
Festival Bangers For When Festivals Start Again Because There Are No Festivals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d7fc0876f6f38517a998da30636db1c165df21d9476d44755d77fa1f647f21. 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/NLM5S2001039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb95735885d3a65e613160610746a1eb940bcba6b6eefef268da09f9b8d2094. 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/NLM5S2001041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a07431feeba2886f1f96557b72efc82a4e1687ecea1d87fe5436d7b2ebb6571. 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/NLM5S2000937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db10cd14ef533e69a4d35ad580889d34750ca403644776b958b0649200aa48. 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/NLM5S2000805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc092147698f2ae818db5624c41a13581ec0ec6f701497f402d1efa2634aad3f0. 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/NLM5S2000766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643aee3a32a589998f0c1cfd6bccbe53883e5829f6bacdfb3333ad535e6a2dc2. 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/NLM5S1900696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755331c67185dd99194324fccc310a93144ede1bbfcbf6dd6e7f3d3d70e6a027. 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/NLM5S1900640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf541295611a48df8fcd91d9e3960022b6b23e477ca7097ed16c15415018e1d7e. 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/NLM5S1900582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce69f57c330497cad3711ff0c94602249f09c3a9b3edfd6a308e7ab87496ab. 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/NLM5S1900546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79722d8964b1c88d4329b580457f7e44120bfd0c5b08980ea867e44742373b1e. 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/NLM5S1900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1aea37c09afb06915dce08c79f0368bab715ccd99eff9f21e218a8e7121059. 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/NLM5S1900462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df206aa9495443d6b9a907f2dae35a6a47e280c4ab72e4297d7fb5b34e14c09. 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/NLM5S1900464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b72d9aa145f2d8d91db47c2ea0daf1b72e83ef2d39d9a7614c358e1d3eedb89. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLM5S1900466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf52d5dca53ced4836a15a67fc3276bffb3039ca372c4e5ebfdae0121f69c82. 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/NLM5S1800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a16fa0a2609fa5a88aa9947c15ad65d6f50921f5ac257db97b84109a53bd9f. 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/NLM5S1800385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943cb746a570844ccbabb712b1da6dbcc9642787de5f29ebd9f39c12d5448a46. 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/NLM5S1800324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a93706022583cf04b3c8a9edb44d6d7e3090632334a1738d02537ab7c7c20a. 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/NLM5S1800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56de40138ab6c89ce2a3208991e5aace42af43c8fb77ec49f7fdd2f4f4a468b2. 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/NLM5S2402141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113cabf27612d83b1bf899e7687681fe006c93a8246149e479e9b7b9c98a8b9. 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/US3DF2245231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e78fdb2675862cc2d36ab963271a77157dc43c48ebd79a4e65e0b5a938423b. 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/USRC12301834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1f0d8d8249bb59c205e4eb4e040eac9c6bb40baee2535bc48f7eecdf4aa8d9. 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/GBUM71804249.