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 0xf66de0201880709ca29f8b0b99e468107a7ac4a001f92166abcc667e8e7fcf40. 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/15d182ca-669c-4536-a2b8-c55ec3557a80.json and https://artists.proofprofile.net/proofs/artist/15d182ca-669c-4536-a2b8-c55ec3557a80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Romantic Wedding Music on Acoustic Guitar: Popular Songs
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 0xc0e17e86952e869d1bc26b679e1ddb2784e7300f6e0f4ea3730d863395c25ff8. 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/USFKP0601111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77062f69fbe7cb53b94946b9227aafc7bcd4c63e07cbfd1afbaf8cde4587475. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USFKP0601112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205fa1d2678ea6f6e2a6ddf73d3018ac029e9baa93789de6db578bd6d345e72. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USFKP0601114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fba65ea3230d4bf0802c9c1f0a92e2239431555b0079531052b07c7b95f866. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USFKP0601118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb710c2bbc318422de368c0cf5045754b73b56b3342c03bad4f1d24fd883f271. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USFKP0601125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf6951e34c82f8cf7115496f57066564a188b78b75a2d48d217c7094e566ff0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USFKP0601126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d6d316c9c82d1841dbd0f02ade12c5806428489a2e5523ded1c65559b6656. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USFKP0601128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85e6c99486e3fc33a09f8a4121c101839b715faccf215465860cd708cba1acb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USFKP0601129.
Romantic Wedding Music on Acoustic Guitar: Popular Songs, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d0735d0f9b6e24c761a8de126fe4fff95ffbb10af32e704f70c40e5a45e1f7. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USFKP0601283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf466924535b3d5bca298fbe0397f3dd3109a8ead6a9f6b40ea706cdf78222a39. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USFKP0601290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae28f457089ec085e435bd5dde0da30f7768aa3eceabbe50adb7866266315d. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USFKP0601293.
Romantic Wedding Music Acoustic Guitar: Groomsmen Edition, Vol. 3
Romantic Wedding Music on Acoustic Guitar, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb8c535ddc0fc433db98aa4f7e6ed362adc02c4d5540c7408e3f966f2599ad7. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QMFME2043119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b5fa5a263f6353a61d379d4bda994220de604b97cdf3013a1fbaed462978e. 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/QMFME2043124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6035954f79308858b23ada21f7d20875fb4eb0cdf5e10a88358891a0f61ccd2e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMFME2043126.
Popular Instrumental Songs for Your Wedding Day (2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9395ebdf428aaa57328bf81a8dde941d34c890db5be8f21e7eae24db7a8b88. 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/QM6P42216119.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0464d61e30e1dfa0c7fb56ca060dab0e4fabf796dc98b3f26324042570ee7e1. 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/QM6P42216120.