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 0xbb5f8cdd258dda0bb365f94989fe0d4c36d3e6b700052cf952dde68dedbed28e. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3af8b5fa-2e96-4bac-a881-326d167aa369.json and https://artists.proofprofile.net/proofs/artist/3af8b5fa-2e96-4bac-a881-326d167aa369.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 0xf329080df05fdaa02f2b87a03c5c445bdcdff54e6cf7e5e9b9bbdf7bdc1df51a. 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/ITD292302555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7316b2f716a65cc03df5a0222cafef1bf4953ad0aa0c622c7f9da514e1db645. 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/ITD292302556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05cfba81edce93a80987f2eb8f36fc07ba394e9de0025aaaabf3ca5d6074801. 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/ITD292302557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4886ee08be0bf6a2642545b6ac71a673037b426bab5bcab9c83bdff270b3986b. 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/ITD292302558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce2c9ff57da884c09d866afed190f9f07dcc02d5b0716d5e07aaecdfbb77bd6. 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/ITD292302559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24bf705c5f99e6b0788ec083bfb0e87d03701f80bd53cf1f907d0b632ed7d3a. 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/ITD292302560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf816366bb154dd10ef0abd57ac4186640b1549e41e3bc2cf7f0780f01bf99a93. 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/ITD292302563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9069bb0ae55a79f71e9d5156930212313ba1de44efbe44b45de185bb4701d3. 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/ITD291901904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddc3f979eb509aeadd6a39e5a03e1ff0445f343744d862071f70fb174a5f339. 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/ITD291901905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef77f1d7458d794349941c0597f86a2989e31aab3557e65e1385bcb650d5060. 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/ITD291901906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d6e698fa826c0e9ad4d545d88130240b19ff88bea9e648d9c21557d4158e66. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITD291901907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d037b10ae94f200f955512a4850f5a2f2631a2252c676f63ed05d0d6fe433f3. 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/ITD291901908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc0b339960becf65620b275878bb3643ab3dcacc76aa0cbc5553920a06a5369. 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/ITD291901910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726ddf7531c5c3a207b362ce53970534513bceff83b0c0d079a491fe89fc0bd3. 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/ITD291901912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aa5563d86c93d139a3d120673c0a10d72b1a677b2858842edf959033e53dc0. 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/ITD291701474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc44cdbd343582fb14c6cf073f0b6dd45f98c6804ebfbc0ff7dd1759e49ce5a. 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/ITD291701476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eea34431d0d00bc5333b2e65ac8bb56f15963b7184be514af54954d61c4a26. 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/ITD291701481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1491afca3104b1a90b63f799b91da7aad873cb82dfd459b247a090c24ac53b1f. 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/ITD291701483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc15a852b02788e8fe9f82305b6968af7baf253169d542f32e2fc461bc4ea9d. 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/QMFMG1392982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa55fe1ebd8d7628c81e8344123fdf5cbf38769d7585b1397a5b549163a498c. 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/QMFMG1392983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca05806a090d3b4dc8794c3c89d976a3fd1953b0b57e5203c19bea9bb0a9c5c3. 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/QMFMG1392985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab3c09ed3f8f1708ef65ebd929aefb9d5202a875e5bc0e7bfe5fa2bf35b3fdc. 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/QMFMG1392986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1fb1bbf94e7212db78b73789ace55be88d635ca9478eaace182b143d1d1969. 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/QMFMG1392987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a221299a37e6c3c1cdad1d8ae4f53e2abe7e65c82d414525c9e5a22fcefb20. 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/QMFMG1392988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05cfba81edce93a80987f2eb8f36fc07ba394e9de0025aaaabf3ca5d6074801. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITD292302557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4886ee08be0bf6a2642545b6ac71a673037b426bab5bcab9c83bdff270b3986b. 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/ITD292302558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2906676aaa7b8de62433ebeeaecb8a5e2828d6a25f5bf2ac5ab7a70bdc9799b1. 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/QMBZ92088410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff11e4f6025f43e1acce4fed63e2a6a8e97720e5129a55364bde96c8992a993e. 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/FR6V80329089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b7668b8e805c5c8fc3146e5514bef44cba0f79ef3b5576e586d3f8704846d1. 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/FR6V80329093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba4fa475ab699725847b13257f7ec76a3260e36de19f079d5820324bfc76687. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR6V80329095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc889f7af2c8f0b915ebb623e12b2ac61532012ce846cb68c4bacf0daaed2410. 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/FR6V80329097.
Pistoia Blues Next Generation (Compilation 2015)