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 0x833ebeca359f01a4988d824a1c63eba5f6422d5b604efaa79f5024c203d7873e. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30a2c53c-052f-4ff8-bf90-d5a43f1731af.json and https://artists.proofprofile.net/proofs/artist/30a2c53c-052f-4ff8-bf90-d5a43f1731af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xc4df6433a45aadbe9dc8657b32284fb1b4b1ffc592b95ac0e3e912bd0ee1cb3f. 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/USFWP1400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fba7999e2c06501c213ec9c94d1276d8da08fd99d9acd5414f83e26923d64b. 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/USFWP1100444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bdb43958bb1045df0d45792157a9c061daca6e13d327bd5bb90f4b2f846a08. 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/USFWP1100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2fea8707926d253cc1a253c1c60e91b5f4319b113dd250883b1b2f70e90de0. 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/USFWP1100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d75dbe655d97d77da5aa569569479a72b0023e9bf1dfd09c9e9126ebbde8e. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USFWP1100450.
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
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc8f2eed3a0d89eba6ce3cc94b33d84abbfce22b1a492709c3863dc627590b1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USFWP1201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1105358182090c10aa7829488e460a446f3c3d8fb33c810fa3c95aa87bd992. 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/USFWP1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60a9782be2ddc1da2983a6c7605400bfcc740ea8546bb85a6b9d4a64a6c09f7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USFWP1201116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814a1ec6fce3d178778d7e73d99be93ff366da2b602ff552fe0001511065ab4b. 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/USFWP1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb2565a28d471047a0d1aa8a4bdb3af5acc3290dde7baa8d6b80afc4a0dae08. 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/USFWP1300018.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88b6677edaa44828e420128f6bc9c3c14685efbba06afc0f0c82753c5eaa292. 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/USEWC0775323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5da90d644dbe2d7a9d81e6d143c73cf75c659856c473403a379780530013c0. 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/USEWC0780627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe055498a3bb14ad04f55fc11e3180bef9059905ebe1c4e31e0ef86c0bb8e9309. 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/USEWC0780796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9039d43ded630410cb6791218b3158ff419fd304426c37be238ab2cc0ce3227. 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/USEWC0780907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2b46e9759b304689b481f00b1fc06cb49ccf6c69db5d0481c89b3273218de. 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/USEWC1184816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501c76b8938a5f18c8f9ee5d51311d2a483fd2add93b4575ab653cb4fbe1659b. 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/USEWC1184819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbe1604a1cb4b502af4a4e9ac1e0c74deb4becc03253f292d733b182f17716d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USEWC1184817.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dec27ebfe4c11558bd8fab751d4c5ed6954a0ae93a17fcceba77fa0f049f71. 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/USFWP1500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f885a538d3143f25e46768cbebc359105bbdefb4e7729e2d4534f1d627e3a. 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/USFWP1500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f0e2505e5560a11d27afc22ab08b3c5b13013d4a29648be84af800a8ac422b. 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/USEWC0775403.
Down Home Country Swingin': Classics Collection