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 0xef3fa80a8a0ea2601da6e538bc15ed1361dc678131bff4d398c31efc241d98f0. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/950f7986-2bcc-4476-bfec-c565daa13ce1.json and https://artists.proofprofile.net/proofs/artist/950f7986-2bcc-4476-bfec-c565daa13ce1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26920990c1d3dea4c15601e4758d932073582d3abb25d89973a5e3d6808deac1. 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/USATO1600537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb95597c7fa68639fa5645abcafe6c39e024fe461d66929a40514de44827bab. 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/USATO1600538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0171e38acb3484232c729ba39244308d424aa492ae65b8d46f9797e53e255f7a. 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/USATO1600539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff45eac452643dad0c16d82b3738eb9f26145bad2050f4c33375e759dd6aec1. 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/USATO1600540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc1b7c7c7119056791080ef5a76613dd2f484af2784cc9fbc05bd6b492ed640. 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/USATO1600541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b17d94ec9347c6d08ef9d17b12b36bf43cf46670a0b7d00bd2b60fea7182f1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USATO1600542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48f550966581e450aa0e15dcc9008cc78630ad5da220682c0d0352c2fc13906. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USATO1600543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888d981105e6de9f83604daa287298e9640f6fdcfb60ee821d5381bd3a41c393. 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/USATO1600544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32aaeb972d1d8b525a6a9fcca1127d0c74f80b7c43e94710636ec968938d4236. 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/USATO1600546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa517e582b775f2e16d23741af9487b4100adcabb7286ba548ef41675cc9efa24. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USATO1600547.
Paddy On The Turnpike (Boys, My Money's All Gone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2bcf13e91f3afd1642a7f6f7cf3ea7e4b95d52a4b6f98d0db9d0d7eb9a764a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USATO1600549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359a070bbca517944cedaffa3567ffcb30b69d79a2e7953c12be541312404fe5. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:17:32Z), 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/USATO1600551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd201626f192ac1af4bd0894b984622185ef4e16203062578753c510e27740082. 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/USATO1600552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486ab5d1a12080883bff41bb2d66fff4cef889b7eb955e234638a7c5183cca8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USATO1600536.
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 0xbf9a922f552bf95cf768d0a5e659583f33955f279b5560675e279a3f44216f92. 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/USATO1600545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc24d6a1fad386658f18fd2e85b434443417d9e85ec5e48b2c0ae768361d4609. 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/USATO1600548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce7cd5dc1e12d68ad08b2ede4dcde6dc13880815d0b7f2cd8feccf3e07a63e6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USATO1600550.