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 0x3714bb4ba4473f26289e6079df76f98322a0340a1286ce740a0ad89cbe829bb9. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38edc449-788f-4dcb-8232-f93f651935ce.json and https://artists.proofprofile.net/proofs/artist/38edc449-788f-4dcb-8232-f93f651935ce.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 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 0x758e0e69b19cd86a43899934a983c2e6d504e1fcb07c4b520828a1ee44529278. 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/GX3Q92090278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434b716bc0e5ff4da842837eafd320f57dba586758fd0b3cba22444d775fad6e. 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/GX3Q92093228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbcf743d549bb41340924fb38b2988840d4ee5eab8632294bdcb410b80db6a1. 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/GX3Q92095512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14ffaaffb417490e0286b3ff55ea14b395e4676c11c42fe9c6ca4251f1fd9ce. 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/GX3Q92096320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2091f9e6f512276b70813ad1ace592a66fab160ea11a241975a2a84a3c34f3b7. 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/GX3Q92096321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb7b2f0c40cada1ae3632949c5af02156c7c9b77d5ac0ca1355cdf7bca58137. 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/GX3Q92096322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cd3017eff3b209d7894353bcb0fbdbf342abf53ca4a500e746431d52551120. 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/GX3Q92096323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ea41204e46c3aee649a91ef72910485cc0f8b7ddbbb08eb1c43bcab693acd0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GX3Q92096324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d8a76cc794da7fa74f4ee265f66d93bb615be2c5f782c00d83ad1ab7872176. 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/GX3Q92096325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228307c7e9264ad2d9592d183fd207f118e9d44a436c5652fe95489233cd2eeb. 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/GX3Q92096326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666142be60d75756f2527d5ebdc73b77b4e1043b088d8ab604c426eaab4a5a29. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USA2B1903647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ab991186739bf17add66beab106b2a1460168dc6e570a40e9988a6552aa34. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USA2B1903649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92fb01498189bf81d3119533f258741e1458c8b6a31d355378e729dd767a58d. 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/USA2B1802956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fb1cad421794f382083234bb1255d8b46ad0b41c03c6abc204aa39d4f9af26. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/USA2B1802957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6866315ae06b7a3f5fae91111203ea9a54008f174464b336ae38ef6bc4727dda. 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/USA2B1802958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a895b18447c4d51730fd3b1668d3d6069d26bf3fe17a8f6fabc1965e70a0c2a. 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/USA2B1802959.
Martín Delgado Presenta: La Otra Música X Airelibre​.​fm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a216660455085d6d40f1eb38232ba8bcdc29b9152a89539fd3d8c2d52251b. 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/GBLFP2047079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea96c48c0bf1ddecc9adc192cd2d6fcc775a715ae82bc31c37c37648a973707a. 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/GBLFP2047078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc2892409761bcb3f62c3d64b6169e4a00294ccf84dac08d75835b1b26a8a81. 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/GBLFP2047077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5714addc7f1652af6b97c4cc3adb98b67c2499b81ee834b816b9a2b41489680. 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/GBLFP2047076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f94b15bb0abb3f2eb8b8af243de9af4c261187658471ce37754312f14966cc. 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/GBLFP2047075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9761fbfb1fd2323682dcf6895cfde39daa1f522a0c4339b6cf3f2ba0f49973a6. 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/GBLFP2047074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0960b11cff7c147d6cf522fd536d12993eccc3d9de7f952b1ce16eb0e407364e. 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/GBLFP2047073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e612e5f6a6016b5cef5536a452819fe219a5824eb5dc649065aef3434df1a67. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/GBLFP2047072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a64545cdf04fede35e007974c02e1086ba94613cdfb3cc304901a3ecd69bb. 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/GBLFP2047071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4253bfd85c436920b80fb033c4315f7458997a586aa2549fced837ba3688e0. 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/GBLFP2047070.
Nunca Lo Entenderás Si No Vas Más Despacio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ab5485a4d9f66bd83d0fbf6ca2c79f5b251e5566575c70cfc393d930e6bca. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBLFP2047069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb29243cf6a2ff3d7ba3d2f1f4317da8774bbd044b4bad739f7b879a4c6a4b. 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/GBLFP2047068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947bf21973397b2b70baf42da528cfe24162d850dd7f31cc6392d2279ac9845f. 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/GBLFP2047067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc643090a7c12f4f8757c2a495c253015dbdcc83d507a4e3b447cfe5e70e681b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBLFP2047066.