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 0xfc38634f1610754c1bab9a8c0acc8826c94f23b654dfa72280a789168b2476c7. 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/e7d1ca86-63b6-4e66-a909-c3b0612845df.json and https://artists.proofprofile.net/proofs/artist/e7d1ca86-63b6-4e66-a909-c3b0612845df.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 0xca96e6ce7afe82b8b1ab67f2b8ce13f77e035f445dc54fc73e10d411e1e85a70. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBSMU1588184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153437ae30abe7edbfef1fde76df739190c8544d6a6fc2955a400c783c0acdca. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBSMU1588186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec85f1177f12572c2dd8a2f9d8ebc6e5d2ad4e9331072e4728007841d3c303c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBSMU1588144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3457e92b9ebd60b70077be40d65c814e3cfae8e14ca65ce938723498a7ba837. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBSMU1588145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5947dad09039ce29b0e1c5f491bf52a4aa24fd79a1c0de3a072a250dff6376f3. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/GBSMU1588146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a4986944496da36570832cecf0c01508b7457a4c91b9cf3d0b21341ff98d0. 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/GBSMU1582026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd2997d689a711bea63c21e38d9025ccedf8c1ee07dca279add2182b7df3ce1. 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/GX5MY2172012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c4b8145665e81c25d4ed788ac805750d0f3ca4e58c007dded58ceb61046068. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBSMU1571837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ba81b03e3784aee6f084e5c257201ae309d61d051a7d5ab94a98e1bbbd1849. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBSMU1571839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b99da4e045175c2e93bb6d9afbeec7bf3c92c5ecc1f10edff166ae6909acc3. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GBSMU1571843.
L' orgull de Palau (Himne oficial ACB Palau Solita i Plegamans)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f7c646db33f84129547abadf168d80078fccbc7b18a2e04f77bfca181df6f0. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/GBSMU3350744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b8c89d237fb027770941d167021ea439c4d9bab0bfeac596d6b49762a7cbb3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBSMU3350745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4240efb20dc8c46b859969aa89664ff2881b7cfeb7986962a96fab9a7e8274. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBSMU3350747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372eaf957c2dee2dc07d04de76b4f81fc2d19a8a49c595e2b7fcc37dff9c94a5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBSMU3350749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fcb7dc98cd9a8dda972e9d447748289d85c9c32c077afaaabd8bd494a60098. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBSMU3350750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c3e1caaa63c2921eba2f452cbc7ffdb86f6f9f6497b898e0169230f467c3ff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU3350755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bf50dc0a77ae9ba7c832a47df0c6b22c77c19b441a60514933490832d5ce7f. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/GX5MX2164829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a43b5912de4f030d8b056cfe942233a046d7d604043c57214b860cfaa45ea. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GX89G2443853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69919e48d3d0713fe8cd42738b2f5efc4db529db10354f1723d5e410a15b2866. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GX4R52461460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f5f4563d87a48497e0391442d283c544546d9c2698a7f7463ebfe0f12357ed. 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/USX9P2099854.