"Danny Boy" is a folk song with lyrics written by English lawyer Frederic Weatherly in 1910, and set to the traditional Irish melody of "Londonderry Air" in 1913. History thumb|right|1940 recording
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 0x5fa54ffcb16b26ac6e24e9ee323c46fcad5dcbdeea265f3ba89f48e6cb0657d2. 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/3b37170b-0f3d-4b82-9c7e-8958d56373c3.json and https://artists.proofprofile.net/proofs/artist/3b37170b-0f3d-4b82-9c7e-8958d56373c3.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 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 0xc8a9e84b0d90e820381b3bbcaa6b6fb2e4d71e56914cbedf075e4158a44f6153. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDR20900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737db35659dc7863374a3aaab28ff00a19d0139f2f865a8ddbc605ac63072c9e. 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/USA2P2258319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f93f380b75f359cf18488bfee70cd9980fb56f7fe4d5e2b86d92b65f9ebb9e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USA2P2258324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0e7e4bbd2752708aa767869a27814c502b6a1575b143c68ba0dea93867123. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/USA2P2428568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab76d66b251b6b4ad9d1f64520750db0c482769dd30c091c1219c4dfe08b58ec. 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/QZS7J2468760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514722872fb25046715f6764f738431c7250c28012c7309c735505e49b0aff13. 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/USPRZ0910086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bedcedd3b53f30086d4b2ef08ae34982ee16504fec1b78b42fa38f051aaaad4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USPRZ0910087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598cd867348d5568ef0ed33276e3c999abe59366b1d71c1d3dbd8e3638f794d7. 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/USDNB0549012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf697f9497b67f70a378fe7fe96a943174555e3f1201b4c3dca0a53f630440f39. 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/USKO10403649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7620365b3fe0c8adb127cf8d2216aff2b654a96560cb447fe26ed6c9b31210. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USKO10801916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbaaef529fa5d153e38c09f07f8e5fffb6c5f75146791ad179b8f0c50005663. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/CA5KR2245978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd3afb2a09bb59d27459adaf498165b983234a5017d19d1977ff59a87009ae. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US6YC1500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbacbb579897fa9982f496b64ee902c8edd930fe07ee71f8d00d7fa04c1967b. 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/USKO10403963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047840af9aa1e244bdfe07d24de39438e2719c44a33bb45cd77bde2571875768. 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/USKO10404295.
Picture Me Rollin' (ft. Danny Boy, CPO, Big Syke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b50dd24bb02094b2512ef754d03a45a3ad3971450452ad3de7e964fa9c11816. 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/USKO10404422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dd3d73905b05958da77f9b413c10b6bf8e9e566e70f7ff22c9f6d1b39362a9. 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/USKO10403749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a54089acbf8e6e82ca594bc8b64103b22ee90e8f647322ff27e68b4a6120aaf. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USKO10403752.