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 0xa8e1945a98e3b9eb1aa4964e73d1529d32612fdb3a463667dd077eee78bf8e5d. 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/b20700b3-a395-40a1-a2c2-bba49ee14cad.json and https://artists.proofprofile.net/proofs/artist/b20700b3-a395-40a1-a2c2-bba49ee14cad.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 0xb6294e4af6121c650eeada420bc96bc037b9b8e374dcaefd46e91b1af0b6cb47. 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/AUXN22276670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65afc2446c9410445286ebcc9bbb29f97773ff392800fa538f6e80fcdaa07f8b. 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/AUXN22276671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ef7e91062434a25ff66a84d4fe56aa539207e9b2698382450f8110d18bd51. 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/AUXN22276672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5715bc94b659e3f7f1d57924991cfaed6b2756878b4002088605842e7e11db. 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/AUXN22276673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395edab0b87323e0ff828c35b3fbae5d76f04de223ceae9a3427897a1edbabc1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUXN22276674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89d897ed1b614b4e25aafd9c94258cf55712eb3b367f8d6a1b650901a6e4b8d. 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/AUXN22276675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb891414c58579b27deeca9adfa67add3e7c0a37da7b1f559b191a8648431ecee. 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/AUXN22276676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6d3d6ab41c2a6614f72eb9c88e3e84d3ca82392bbaff61a677ff8bd224a029. 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/AUXN22276677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a763f333d777e87631d218c7c147e16a723cdd56aff2a9069374b111ad4938. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUXN22276678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fc56c027a1a436601a9b3e1e5648c094c94aa8d320e093ca7f7c7f9e541279. 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/AUXN22276679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da9fcd22a41bc2c51738a48480e0ec410ac11295ee1db1328d9a96cfdab1777. 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/GBWUL2374561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a02dfc1e8ccf1910c5591ab770312b8240e4eb3d4972bf431848f9ef63c00a4. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/GBWUL2339043.
They'll Be Calling Me Royalty (Royalty) [Remix]
They'll Be Calling Me Royalty (Royalty) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738e4e6df4a0b5bf841842e68724479aedc2caa94eabed0934143c19b464c19a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUXN22399412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bcc1d093e8f861d8ea6ed13414e8b5c35f8a72fe600aa01303831fa62b76b3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUXN22509218.