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 0x3fa789e0d1802012ecf61f4ed56a00353d93340da75022a717d398d0f7c67675. 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/6c54259e-d8e7-4d9a-8b33-13ff1157d3af.json and https://artists.proofprofile.net/proofs/artist/6c54259e-d8e7-4d9a-8b33-13ff1157d3af.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 0xe6a02c04de7ab9e63ecb9417f6cb02e72fbff7a03df8fe4b3bed65a4bc7162f6. 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/QM4TW2229234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ce5527998b8739ada498af527e4f4eb82e809f0862ffb0398d038616061c4d. 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/QZNJY2102830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894b3f0e908df2096f644c291cc0ad8e7d708703fc618f8f34d6fcb1ea07c83a. 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/QZNJY2102834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72687080472e722f41581888279dc013a503f7bbd094dffefa307efa549f91b4. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZNJY2102835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ed8cba33281e599b6b98828556be8d8be08769e14183889c34e897802a60b3. 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/QZNJY2102846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd7bcce446df2e334cb312623f6241f873a485ec99d6e5d6b598a9f88611fd8. 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/QZNJY2102848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da468f5104efd0b4bcea5e59f4fded023c81b465e7f1ad04afdf51532ec777c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZNJY2102829.
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 0x5d0b1e1e2961120a23f15257b1f8594cceb6e79c5b05398cb65683aa3f4442d5. 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/QZNJY2102832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e78b64ac26f1b3d43691d8132218354459680f49a2bf0d2dfcca82c64db89c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZNJY2102833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554593eb47743191fb4b1ea02742cb2c3fa81e8913a360a229c83a9a492b1196. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZNJY2102838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd35d2d91a7ce855413582f170e38e1b3107f23ff7452724171c9f6771a20f6. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZNJY2102839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54deacab640b843103182c6d6bf83b56b4a04d55c2c7bd30de1e164fcd8218c9. 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/QZNJY2102840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ca2549a3c1a30adebb0038e0e16425f589adbd1a1c99041c749b3b9c4764c2. 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/QZNJY2102841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd035553570498962dbee0c5509cc0bf99f446597039b3f76b47707013f061015. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZNJY2102844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fd89e7b2b306190824d1f5004b04202a00106f52958b9a894b7273d85970c5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZNJY2102845.
SIN COJONES (feat. Papi Trujillo & 13am)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbd2a265d4ffc5303df6c3cefb04fe5d3d04f2b1dbabd35582c7d7625b59064. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2338127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2dc21c17fa7f5f376fd8a4c261ab914f62eb42ad33eabcc8634607a50ed397. 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/ES71G2324307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f1b074ce5c21d202a0522be011d10d0c31f561844cdf4e35d53aebe3f15ba3. 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/ES71G2319509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711dfc055ef2d188d5867de1c3bd51cf89b68c57867e72037940ea5110db5b90. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNJV2377495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d16edc5c03e0e488fb3ed9d5b5dbd7f7692faaa5d126f92fbdd0cb2edd3fa2. 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/ES71G2241545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2298678209a304b4e05749e86d36149c347d858bebd252fd7874f7d8675aa5. 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/QZTVM2252592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccffa42fe20bc8762161afc6c120b97c505c830b48632297f65927c43cd4f54b. 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/QZTPX2283078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549970fb851e8d5d8be5c12d0cd15dd7fc2e7dcb57a3d232dd802716dbe54882. 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/QZNJW2276788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f725cc4842758ff4a0570fa6dd0d964e3a1c366a4115f91df9737444be480. 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/TCAER2071785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280d080d94033d0e62a271f80f1ed6b5bf2ba931f3e046da4cab50687921ce4b. 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/QZHZ52063347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c4e28ad82866cf987a3e151d13c9ebb1bc4c29e20c226b0047bcd044edf774. 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/QZHZ62141964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745e01a07a7b47b6f7c65ebd6d9d0b42a6c115f617999af9946bf69c103c68c6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UYA522100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2045fceea75a9037a1652fabd69f4f91e81ea9190debfd6404dfb3febde74efd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UYA522100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f74d03d37d1a8d3e1b96b9a4765ac32b8d531743b9aa8f3e26d9340eb99fae. 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/UYA522100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc0a8d1f62ed9b9f1daafeb7469a2389d76dcdb3f0ab676f0b3277bd3d09f4e. 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/UYA522100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6de0737b63af1968c64904e861ff50a472901abf3592626d4ab1543f4ce7735. 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/QZNJX2016965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463d3f96ceeccac0da8931e8a66f726b8b69027f477981b597e198749cc419b2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZHZ52106479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e298fb19217486b87a4cd5d68fe2904e0d6e7c226228b484556ecb1d51c3df3. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZHZ62153726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf082bc5d1d9247936d83236908645cd4e78f562c34b67d12eb39bdbb40362407. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZHZ52117133.