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 0x703cb9ef1fe369d5efdd18573aaa66b3b587eb35d438b304034627dc5d84b765. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23d4ce27-3dda-419e-992d-9d060b1d3cd3.json and https://artists.proofprofile.net/proofs/artist/23d4ce27-3dda-419e-992d-9d060b1d3cd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Acoustic Guitar Tribute ~ Simon and Garfunkel
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 0xc2ff6413af42f64281fb63b878697595bc6e97c35b1a668e4488271097447487. 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/GBCBZ1190501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716f9742e80849679fda7dc200dabf2e63b131b7d490ef5dcacbd82dd5656dff. 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/GBCBZ1190502.
59th Street Bridge Song (Feelin' Groovy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99864c720faf793c4c0a1ec5a929376f81fd3cccce4d9e6f18d2aff047bb8e5. 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/GBCBZ1190503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0edf31b61e5768d71a8fe4fc297a39f3d1bf1b652e64f089bbab4e2cb1fae3b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBCBZ1190504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b89bbef16fd87805618066a8b3bc933a29c5a0793d4577678507cf35359b9fa. 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/GBCBZ1190505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0827036c4677662a1161c9b61fb3db76053b946f19e5bb45d37da21dd04aa826. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBCBZ1190506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39303785098a0e4568cad788a6b757a56533156c7e35a2239bbfc65d2da0f9a2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBCBZ1190507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb963f1d542e5ecb6953acc44be8ea7c0291ed00d0c5784079f2744aa000f70. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBCBZ1190508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7e58e6b7f837a944064c329655d31603ba531eb5dfd96d3a4f7f6e11e0aef. 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/GBCBZ1190509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780c6652356ab4486a3e5671dc3adea082c945c6c57c87e2f80adbc15e7174aa. 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/GBCBZ1190510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e3b443f94c6be21b877e31dee63f024b30c695387672d8c4e4b33ab6698264. 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/GBCBZ1190511.
Love Is in the Air: A Collection of Classic Love Songs Performed on Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a50d98de8086f4364b07c92fe6dceecb9fc784caa997d63520dddce86c0013. 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/QMDA71403473.
Sad Love Songs: Music for the Broken Hearted
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da608e1acfe2d5fa28825f4b5778ec67314ac5069566aabbd5204180da2702f. 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/GBCBZ1410221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fa46d55c23874a41318b18b7d458116d4c6ef31bd3858225ab5d750582dfaa. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/GBCBZ1410220.
Falling in Love: A Collection of Classic Love Songs Performed on Guitar
Happy Mother's Day: A Collection of Classic Songs to Show Mum How Much You Care
With Love ~ music for a relaxing Mother's Day
Romance À Deux: Easy Listening Music for Candlelight Romance