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 0x2a07adf6f331966324a4322508ee4f6ef63cd632444b2be68ad35d6c4fb057b3. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50922098-8e60-4d98-950a-4e216d381fb5.json and https://artists.proofprofile.net/proofs/artist/50922098-8e60-4d98-950a-4e216d381fb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Ripoffs Tribute to the Golden Age of The Beatles
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 0x3cfdace94d713501a3ddf2dfe5c115d573d57eb0b158582bafe49e469120006a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USQY51319061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7332fce51ef02ab46d9b14a814a9415e955899c0017bfe1dcba65b6e0ecfb42. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USQY51319062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca013ce9e6e83b4db32832505e991ec7fe16a6b34e5d57e0ad6179eb3d3d4b1c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USQY51319063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b79ba1c89c8bc7853fe7ba59e92df8a0342fde3b5e445cd3246aa9f470b984f. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/USQY51319064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0aacea4d5b2fb63c8962838fc7e6a21b8630e64d6ed5d4109b6b2ae777f9c7. 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/USQY51319065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39373db8c41e3a362e8a4e773eb9bd658ae9a06d97459d5d44e1abfea6ebf9ca. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USQY51319066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649dcdc75d133d3c7a9a77822faf7074d259e38122db8fed05a72959196551ef. 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/USQY51319067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb10fff6b949a5b16b64282e784134aae2c0d72e155551cbc05e1c70bb2bc0fa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USQY51319068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876558c71cd8a8d315eb3b57a223017efc9ee992ac7011f19841dbd0ad37ac10. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USQY51319070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc4529782c8fce8ea9b8c830917f19e3de567c61e0d124cc60887fe6d5999d8. 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/USQY51319071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36c9c9674b2213b4abdeba3c04e658a029825978f306032daadd6eb3d9b3cfb. 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/USQY51319072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28ad75bd521d80d10dbc0742d8ab4980cc811ac6da37102cb36e8a3f64d4ed5. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USQY51319073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6441abcc07341b5fe0eb86d5887080a0660d68e56bac87bdb933963ddc9a7c7f. 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/USQY51319074.
Rip Off Records - The Singles: Second Strike