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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78349cf9c4feeb407a1e56a548b8738b1980fdc069d34b7be1423d0308020c4d. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f88a68a-41be-4312-af92-4b38667ee10f.json and https://artists.proofprofile.net/proofs/artist/5f88a68a-41be-4312-af92-4b38667ee10f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Neil Young Archives Vol. II (1972 - 1976)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540e936f40d5ac0f6d799a279906774b311fb4292bcbf3c7a05ffe20e14dcb65. 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/USRE12000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79c3d5d2e1b1a7109fc89cc193bd6a5a91093805f236fdd3d205d48d04d63c3. 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/USRE12000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc803376259cd0990d3471ea1ddcc3741daa61442c8e1743c47d8b4da3d2b4501. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USRE12000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4f5b4b6e05e860f828f642c56e3eeb8626e679598a25e291c08a307d998434. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USRE12000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2c04aebb023cc83aac4f67441e1b926463df708c6acd341ac91bf9f9244389. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USRE12000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f0d191f75708e69fa324d6c8334b90a745c326bf48081f069c67c865efa8fc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USRE12000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d148c4a5c01e11ebfbdd72f6168158b56c38f293e40ee1aabcb31e4e892f85f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USRE12000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c3b3e06d47d67425e57a21e57b40bdc5d40bf7b5ba5939342793e704160204. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USRE12000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a817217b2cb79889aea779fc063665727ab6d08d73750fd7191bfa211ac3d2. 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/USRE12000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c349b7544bfb9b616ed4ce999eb22547008984cece54f2f9cae5d1dddeb8f08. 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/USRE12000420.
Tonight's the Night - Live from The Roxy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df42ed278f668d4f5483bb962eedfdc9dbae5d287f8eb7c609cfc3a19a14437. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USRE12000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a7c2d3a164bce09a66beec82e88a8a0ba1cfdcb38fa83308d8f744bf96353. 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/USRE12000422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d93f19aa0c60e7fd731cb2b3562befb83244f912264bd849915ef45e9daef9c. 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/USRE12000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354170d1e652b27294cb351e9cfc292c2ea26542758df62db8fd7b73464143e3. 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/USRE12000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d277a66e8759b78bfdfecdcfa61113279b533e600e25ffb389585f454ae0ad. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USRE12000205.
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 0xefdd5483bf1714beb863cc5506248e89155fdd0fcc503ae81007a81587803ded. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USRE12000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6389d10ad3cbdb0bbc167e2e6b2e893493b66c4978a6ede7aa3aadc142c2e2c4. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USRE12000206.
Roll Out the Barrel - Live from The Roxy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5815bded1b54c8da17c2bc87fbbbe667d51c7a3c18f0738a25419e1afa9e0d8b. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USRE12000421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a5fae10ccb283964efbe8d5c6daa18340342b946d491728201e52657b2aeae. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USRE12000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6760a51cf5d055d43946fc4bbb68216e0fed5b2699c882c872c10bc19705dda2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USRE12000211.