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 0xa1ba016434e9d36c6df23cf99efb49c8f4203b7bba30e9ff04f45c63ee5c4968. 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/a1abf233-1093-4a28-a6cb-2e79c3c652e5.json and https://artists.proofprofile.net/proofs/artist/a1abf233-1093-4a28-a6cb-2e79c3c652e5.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 0x1b9a32221d594b42c2610fb1813297855675f4c1b76ecbd01137ed314a46a7c1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZES82198767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde730bb6cd01ae65aaf78366fbf7092149c5544b5aab4638bf88861c990b7663. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6G2149473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d00c4b24f4157facac38535ff046995c14a6dedd195264083130efcd9812c5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWU2141168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ddd5f6fc6bc3c3e30d02fcbaacff5235dcaf0bd9843b0866363ba305cccea4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZS7J2286004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015bf8ba51013d54b8a62e537fc67f240847f68f5099cf20f365a5f855856b7e. 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/QZWDD2203323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab903c0815768501208c9fd66c11d4711abeb37ed40c7c1bac7885a03252a15. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:19Z), 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/QZWDD2291961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26aa7dfdb1e6c618d414020363beaa202ac64c5b282897f67a3c9ad8ff97bb7. 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/QZWDD2291968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7add0bbba0b0286dfdd943a1dabdab0b809d7ed3af1b48a36ff0ce8ecbaebf. 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/QZWDD2291972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162a889fb3cf667728632da5a6da30ea5f01c35699d515d947562af9f02ae942. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBRKQ2366737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e610abceb8e744bc9a457dfd7565865edaec61ae465de761fe99f91263109f1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:42:34Z), 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/QZZEB2396359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eef815879ef39e66ffb6a8e767245b28c33a85cf9898e42ff888a79075d2e97. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:55:12Z), 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/GBRKQ2473221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc2e925a9e2f6deb7a571a99be690822ecdaa9b2dee5154e9748e9c2bf7cdd4. 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/GBWUL2446880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38507f2deeecc407b3f1f6eb2e145f3a3471f6931054a70726820f635c8b2616. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWV32459861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3d2986b36688fa4616652e4c9d7b13e74d2e22386438d4f2dfe5da36af46b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:22Z), 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/QZS7J2490860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be4ad79ef6b10f8db4a56797974690cb68479a4ea560fcd7adc9c043270615. 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/QZZEC2402153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8404c6f5d585a7460d20c4fdce7839374560876fd2a0240b78ca78c862be1ecb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWDE2509218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310f0bd04484efdf3b3497f0cce76da1ca8399399324cea62c7aa39e0161b4c8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ8A2534968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472363995780b179acc6d3dbcb7a1a3a1d2b910ddb5e0e33e988defbb4629164. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN52212452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028236c613f839114d1a8bacebda4f651118fc053fe2820f00cd6dbafaaae0be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:36:30Z), 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/QZTRX2408748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd36c7db3ada53e43c96a677d796d4734639b48eeb872c714d487fdb59abc900. 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/GBRKQ2331885.
Black and White - Lonely Spanish Version
Black and White (Lonely Spanish Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af213e0ec562e5db2e2d3a8085962020558fcb2487415ee15c4e1fe1f65aeb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6N2206665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591929475cf6bf9491fd709d261c6707f421adba4e326d67da77dfcf64508cc2. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZTV32384380.
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