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 0xbc8bd23528ea8a2781b44b9d77f2abedb0132c9cb995a51d258af9800571b275. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a556fa5-28af-4d35-b784-b7b78c31c64e.json and https://artists.proofprofile.net/proofs/artist/9a556fa5-28af-4d35-b784-b7b78c31c64e.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 0x2c781806941ee658307aecd5608e83d8ac236d80f2ae8d832ed213e6fd07a515. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBLDX2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697742e37f15a549c138cd342ae67e21e0e2301596d4176a682c2f3a830545f6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBLDX1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f95c444a512292a05fe85b77df422bd4fe6c88d49803017ce83055bccc62238. 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/GBLDX1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327404113a0298f45e2ad5341d0a728e52a05f121312c403320818921f6fa1d8. 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/GBLDX2000044.
Sometimes I Wish (I Was a Different Person)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd5b023b23a9d902acd847a30e04dec880e2b126be49a00d1bc2825219cfab8. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/GBLDX2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c307437cd7ba4152b4b222365322b732f10235ffe14a95e985eb4e4b966b8d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBLDX1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608f6909d54fdc14dfdeac895ab00720c1e47890e2f31eaa1e8764b339c107f9. 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/GBLDX2100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23c25ed5f2e493a3b1b98fc9772f4b70ab45947c12c9f6b692aeadf5c7e9a2a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBLDX2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcbdf09374c554d5fff999d126f0b0799264a2a479c6aecb8ca5ee81347d995. 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/GBLDX2100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0791201707bb87d03c3e5edc58339a7feff5083f3e3ebdd30a3b0d18fc6643b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBLDX2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1417c94e151c2365275d7442224e0466a8bcbaac0256ac1bb83cca095c469d0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBLDX2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c8a4536fd8911aa4bce7858e19eb352ec22d0312839234a8a43b4f76da0492. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBLDX2200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6a8de0636de5d2c14ab42f5e209805c85145299e80858217d2c6174664d849. 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/GBLDX2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0791201707bb87d03c3e5edc58339a7feff5083f3e3ebdd30a3b0d18fc6643b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBLDX2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd5b023b23a9d902acd847a30e04dec880e2b126be49a00d1bc2825219cfab8. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBLDX2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697742e37f15a549c138cd342ae67e21e0e2301596d4176a682c2f3a830545f6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBLDX1900013.