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 0xe401419822875a84c681ad13d5f27e2d923feb318ffa359c482cd4bc960e288b. 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/b18d689b-38aa-4912-9d1d-f8ee7284ddd6.json and https://artists.proofprofile.net/proofs/artist/b18d689b-38aa-4912-9d1d-f8ee7284ddd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Best Of Unreleased 2010​-​2012 (Remastered 2014)
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 0xc0b93407ca4d5227e064d0787ad1d32ebe5b7b12884f83684a2941b8fb0abaf9. 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/DEAR42279037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb1043e19a22d3062fdaa5360ee3b14e4b8b65ace1042d0b49d5608455f7646. 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/DEAR42299262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96269052e13f9e637f315180847f839f20caa0a786de30e466fd0018f10084f. 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/DEAR42222008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1404f6cd024f0b6805d349ac9c38dfa5c5845d7e9cd7058972b98fc45fdea66. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T19:07:29Z), 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/DEH741805062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b785fa6b9974e87ae022afb8939deea91b0a170c448ee7c792427919630eb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:57:42Z), 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/DEH741805064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7070a253496002d2d5bdf683b0b8bb28af4f745ec1d3adb48f394559f13b5c40. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEAR42496013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcbf23188bba9eb127975a049e69617ddbeb0e7804e96435004f8398a7ffcf0. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:56:55Z), 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/DEAR42496203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073366a0b435bab2ffe3c5102c2e1ddbfaeb9d1db60b11d062af2d2dec38913. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:03:53Z), 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/DEAR42495849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf72c3161ac5ce7ba3a2613acdf408e7fa499d299e2f1694f5c8ce2f15d2bd2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DEAR42495868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f069d8f0951cd183dab59ec3c4eca76d43c448ea1c162bb0a273cfef6894191. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEAR42496365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c1c48b645bed283796eb28bb819f46d8e12a0411d37a6b598c58843d9cb5a1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM82440911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b022b73ebe6bc7fa1a817109709041693877c043ea3fdf37302cc94054a460. 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/DE1JN2428914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e6935249b56d148b982e4c74aab33f054a1d047cdc443d3c6a08b46d9ea0c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DE1JN2428727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef974b10af0f4043249f2526c7e21e7abe55391faa8e91f11cf26c92d3749be. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:33Z), 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/DE1JN2428515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e8e96f2a815c8a4c0c51be12e42a36d1d7d278f3b078e804d5b1bb4b9d47ea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DE1JN2428643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0836d5ff0739252c4a4c0c0cce38ca52580e4962245c913de67e02c8e6cc3d5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DE1JN2428493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157258630ed8396c05a5be04e717468753b03e0d1e1610fd21df4b13cf906c40. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DE1JN2428447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bdd8aad845ea4f360b2b7cb836bca2156a12f75650f9c5e5460a78732bf9c9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEAR42566284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac76d37ea9dfa4611c5a673fc0a6d526615846273b5caee250c47e3949efd200. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEAR42565754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7d4e9831bdf9459b10a9045a350bb2dc517bba6d1db7fee96cf0404c381d9a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEAR42565653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242775c523bc3d0ac342810aa861c98295135f479d547728f5a3b8a5ab56f09d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:41:17Z), 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/DEAR42566259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e756d753ba5447965c2e507e0a7db51a77c1befc1c3f3507b66fec8469b72c0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEAR42565925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cbbb89b8ad54a754708fbaed8b6a0af2849496b581e2100ef8f6f576a768ba. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:38Z), 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/DEAR42566681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe804632c5fd016c3551c1d1b6724239fb803c76f325e8aff13ed8f46e9cee837. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DEAR42507228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35911d87043c032b14ed6cc7efd3e7a680ae1ec99c4969b8db83367da4cf1c06. 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/USQY51460264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7610cbfda41b2b59ebc0171c23aeb382f6c6ffd4c4733e67643b56d0f499014. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USA2P1567548.
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 0x5bf38d27405f9fb5b626622143576ed2586afb4480a22d08cfe67271b318513a. 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/USA2P1343306.