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 0xc86468a8fb2fb89d53a793eb9bcc27f80696921db65366b6c0ce69fc02515aa2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3eb359f-0de8-44f1-aa99-fb6af512e4cd.json and https://artists.proofprofile.net/proofs/artist/f3eb359f-0de8-44f1-aa99-fb6af512e4cd.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 0xc9006cf2f009d9a0a1e54efb4f70570beb49bc42245c249764d218f819d872d9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USTC80933112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73966041cebf46cd60602c9296d2320c38d9f1ca462af735fb34f29a8987f1ea. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:06:46Z), 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/USTC80933116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487fd4b3cfd28cf85c89e7329b4760db09e273e571f3c4de672b8b78571c34eb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USTC80933121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf114931db4a63da7b8c5e1a6f922557f3b186344ca2b7f23807a224b328c7ce3. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USTC80933126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2f20361498ab3cbe607498ee87fdab3971526589f037b5e6f43e1b700f0076. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USTC80933139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f4b85dfe892648aa6ebcd8aeb20eb99cba9546d1530353b96f6a92427c5b29. 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/TCABK1219844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4390f461792b1bcd30069ee5f91c264ed76f516b18406e852a363eced35f4392. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCABK1219845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47416c9765d6f6cec7dcec932d258a341ba768717b801c463a06fcc6639cfee1. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCABK1219857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb243d0ac66508e82b3337ceef568fd94b5e7dff0ee1300358b38efc688a500b3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZ5AB1774642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d0e07821f3834cadf069a1fd5739f28dffbdfe1b126b8b4fd9c5d5b7213bb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB1774646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d0e07821f3834cadf069a1fd5739f28dffbdfe1b126b8b4fd9c5d5b7213bb. 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/QZ5AB1774646.
Conjuro (En Vivo Desde el Teatro Colón de Bogotá)
Idas y Vueltas (En Vivo Desde el Teatro Colón de Bogotá)
CONJURO (En Vivo Desde El Teatro Colón de Bogotá)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed836d7273a13a322fc1b726af19fc91a16db9d421ad447d64f2ed6d83dbb5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ42152005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf2785f42f958ac6b972e604d75f962fb549026547cf930296d267189eeeb53. 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/USANG2195952.
La Danza de los Lobos (feat. María Mulata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0eeba3a36b331097547d9447caca5c7db83579909f237f4785f008e9ce861b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADJ1739546.
La Ronda de Las Vocales - Los Nuevos Canticuentos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca49ac9bbbe98aed664a3c183107fa8c25fc56239384fb248d0989bda0cb71a. 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/COC012544082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ece3afef77a9eb39bacd1ef228d80d384dfd7075945f3291e4cf1e1d2048f89. 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/QZW9L2312105.
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 0x83b558a99ca88e569a0030dccea897c9adeb4760e82c4d2ae0a547c6105a7924. 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/USHM81798421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5fc8d661310585e1b9c11941ee9f6c439a5519f405abcc703a5bce49c1864. 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/COF012121009.