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 0x29387bfd2fb665ecd10ecc3afac566a996c51504630a8c50e1041553521426c8. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/465ae25f-300c-4ff8-ba9a-3a5f8d442dc0.json and https://artists.proofprofile.net/proofs/artist/465ae25f-300c-4ff8-ba9a-3a5f8d442dc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rey Salinero & Friends: Lounge Bar Collection
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 0x4d8c51c2fa65e44cf2a7584add4ab014a43f056b1cdbb961f79e1372f5141ea3. 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/DEKU31100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d97eb23aead177606c836d10d74fa42ae5fae1cf6b3761ecce2912ad3b2079. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEKU31100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313b2918511f28e8d4417d82f98b06377a78da43efd32b3aa4e3754ca1d91197. 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/DEKU31100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b559e0ed6715db7c885aa23dda55d1df783636e2ca0913653904820988846fd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEKU31000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b4329f29eb2b1af885b562ba03d6a75bc7aeda355418079901f347deac4649. 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/DEKU30800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8049dd936548e65522356ad439f0438cb3a8e924e31e9c5980158c1df9aca8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEKU31100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace95971e28680bc39bf1736446d474b50f37fbc060fcf12249ec19263fb88d3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEKU30800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbad0c002b739731f5ea0cb305e919e96eeb14019530802b50a040238061536c. 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/DEH740802318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816d110c48c1e96daaa9aa8a162357f8979f12132adf9d7950fd9d009f445da4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEKU31100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacec3cbe2fc23e5308ac154c399e3aeeb25db3aa31ab0cc67379c1e1804a9766. 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/DEKU30800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b4d43f9684af22b2affa29b65ff2d1730842fd60f30460294c2442ab099ed9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEKU30800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285a3fc1b314eacb028665b178c1236d3c0dbdfaa130731126cc0cd166f6df7c. 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/DEH740906592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0998b969b4e527a4ab907bcbae7a3ceea3022cf5294658c27c9f801715792a7. 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/DEKU31900024.
Rey Salinero Pres. Ibiza Sunset Chill Out, Vol. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431aefed9001e09a3594bbf71b0dcafc5a5493ba14f265d69521b1c2ee2d160d. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEKU31800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c1be2a8e9b2d1b314ff899b743ccf871c4f967fc6dc7f41b3fa666ba927440. 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/DEKU31100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d887e8f65a45806e62f45e129a182389f8efca31b530519a8f777c4c634e04c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEKU31700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca829cc0e62b98a9862025c1a2cef5fa4ec22afad37b816b7cccfe306bf7a96d. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/DEKU31600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100fa7cfd753b820231abb073f57c1681f808609d1d540836f139cfa4d0d9007. Chain 2 (Bitcoin): anchored in block 957210 (2026-07-08T18:28:05Z), 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/DEKU31600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44af62f95ba3ceea5a7019efd9785ef4b604acade3b2745c4e2c0b9330879a34. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEKU31500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4755d880b2d096a61f019df84782787f78e5a0f867f34499574e2450285bbe37. 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/DEKU31500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe650fc5fd84967be8b66ab8fc880510aa18ea67b095fe62527def5dcaa4ad916. 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/DEKU31300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27decb6659545de1ce53d87ecd857fffd48a9225a244f42e61eeaad2c1c024ea. 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/DEKU31300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca951d35ac196c353061f50ae9d3e09cc1747f3e0292ffdb9085ee9ae76b142. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEKU31300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7275408bc4ec004beff949aeab1edb87d761ef0540a7f081bac34e9519f9133. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEKU31400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0df2e8261c8affde8d0dfe457dc973f74aa5c04d0d7ea51618472d8f0b0b39. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEKU31300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248cb1015e37507735d78371a5f1f4f0240c9ce6a170f39f3b473496ffd2fc12. 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/DEKU32501096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a9ef8e9c45ebb5ac1c355e3966fcb5d5ceeb87cf78b6dfe668d5553b6b3ce. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEKU32200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766b02326b791b59ec753e3fa71d55b7dec6194c3e537ca1142558575020375d. 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/DEKU32200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd96c16e3b83ea5e2701a08a250e305cc08dca67db9fc6fb2574903ddec191e. 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/DEKU32100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bd5fcdc2377d502087eb38520b6e0a2dd8ac8e9c3711a03dc18540398073c6. 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/DEKU31200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc066d75ca6e2b0d8bf2dc8a49a1b6318f6889bc270b48ec4c0ae4353e500e. 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/DEKU30800098.