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 0x4166ed1121af1a9533667062970fa32a1311b440a91bab53c423ee42edb86de1. 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/2960c5f3-12d5-4fcf-8609-ab6a02dd9af6.json and https://artists.proofprofile.net/proofs/artist/2960c5f3-12d5-4fcf-8609-ab6a02dd9af6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dub-Stuy Presents: Brooklyn in Dub, Vol. 2
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 0xf7e419f25e4f6f54c8bc8ae89df79a587d882ba3b5241ed5e75cd28aa30dfb36. 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/DEZ651702176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821e8956c45bf8379b54b050000fb946c839e174ae98a93c106466ec076ff00d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:07Z), 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/DEZ651707485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f03b70e7bb2b78c9663facbfd99dde7a15806a83671c76acd3cacc1b045b389. 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/ITDB31800066.
Moonshine Recordings Meets Mowty Mahlyka Uptown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25882b5c3a140c48c112c8c1ae338307de4ce980e7f8c0ef67a31a9af5878f1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLE351900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef220ae3b4558b5128b6c9bbaeea02244956f158f3e6c98f434db4b7ba62db54. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLE351900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997669f8fc4939e90b4a6e39240a6ddb694318a22bbb52cd0b71c6af7eda40ad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLE352000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662a5f57c9c6cb36e224da91204099e4d130259afb610ef8eeb8918431c976a5. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/GBLV62014649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172dd3e3bee150bca07a2f990cf315fce86f0042ded896f52239de918620cf52. 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/PLE352100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3349fef7bf15dc87fac40a1d5a76436e38e41d9da7d00b857a018b2cee1e7. 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/PLE352100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bc0c986803fbd339a60ec9db6cdfcf096ec45c296aa0d0d48ef150c656d2e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLE352100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d42385d621c0c6f5fd83fd85fe9994041fd961c7b2593e6d9cc1d5ddc4bb3b1. 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/PLE352100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccdaa37cb9589d64b35187009849b0714bd76d8f6c4256dc93a4a137a2d053d. 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/PLE352100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c46a230aa8b6b59389d15fa6f7296028460cea04ec493f84d997e76dd1cb3ac. 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/PLE352100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f324448cab708a59f6e6df7ddc849a0091bbd792c2c0c7a20f48f3a0decc990. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBKQU2279952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35b157660ee190baabc1a7aefc90d751a5d956abcf42315fbe394c1b72f0755. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU2377228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62642bcaeb61af012e140f8c1d3a11a385582cc89f4a31c84870f5081231e60c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZPLR2409175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82347950526f07b857431299b5a8c84b8f75e57ccbc939a66b6c40f783df0484. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:21Z), 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/PLE352400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f15361ae9b55603c867919ea574d28e9179dbd20df1c560d636b8b715b0a19a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZMEN2563752.