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 0x9767a04e45f883d374bdddbd4a5be39f21b90cc0af44c6d63c475a2074bb8789. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/354911fa-606e-4171-b42e-36d329b7ab13.json and https://artists.proofprofile.net/proofs/artist/354911fa-606e-4171-b42e-36d329b7ab13.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 0x3c76385dfbe5db6d438fe960aeb0f8ba12cf3bdc15e171654f171b3313b7a888. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/COS019800762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc963ec7c079bf2787f905fe9fd3b15453f88e0e85729be6dff3f868adc19df02. 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/COS019800764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88af92f6bb7f27e39398e332f109dfaed9d4344f7cb3235b42e14ca9d768ad62. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:58:38Z), 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/COS019800767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c17d4915875e08f9fd9b4603337869afc249c3748fb7443e5845d1ec63802f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/COSO19900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1239e3b48d4541d2871d2a991289f4198f4fd2aac4a5d7ec063211e2db5b0e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/COSO19900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3795dbf18ae82dce1b2b0d2d6012ee0bf4c7d61763f34722fd177945820099. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:37:12Z), 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/COSO19900303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63c50ad2f6cfe851f26682996b5f859fb986cb73953124f560b5c3ba56f55c. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:19:36Z), 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/COS010000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b22379fd34241625dbf61d8cf931402e6ac8426b90962e5fc82d1886a40ffef. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/COS010000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456bc96918ea60d3473b0cefc6915c28805807082d1d702260fc9fbbd45ef14f. 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/NL8RL2437553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3ae99b45eec2a02c8128c39bba6ec8ce1f99e8cec518ffef78591c71bdb651. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NL8RL2437555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57acfc5d8b523e29decdee2de562894a2e8b6cdf320e68c168c55cc7340d6568. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/COSO10900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bbbaceddbdb085cfcdbe078a157b56f4b121174ca72b210531908ff36e8527. 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/COS010400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df2459b4b225f88b2f0e9a4006101486365e6e82b5fbe15373fa90b8f31ebd9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/COS010400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebcc63adb5364a83f6cd40e32599eb95dd2071fdb6663a8c8167ea327d27524. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/COS010400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3960e7956aff0c2d3091b047ea5e168314d8dc647b0468553336c13000e2a85. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR96X1793649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84bfdf18a05789460dc5eb6515fc2fe6948fa0af77d770cf207722f682be640. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:48Z), 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/FR96X1793636.
18 de Junio / Homenaje al Gran Martín Elías
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c58b66972ed56ec6dfe1f5c5760cec39e9735c8ec476301ed6283610d6d75de. 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/QZMZ92407564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c58b66972ed56ec6dfe1f5c5760cec39e9735c8ec476301ed6283610d6d75de. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMZ92407564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e30ef681e4e527d7c4308214312d4df1b746535934ca34f2539747642ba06b9. 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/NL8RL2445299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf60f19bdd90ca5e1e913e32ba2042e817f7f0606811ae38cb6a598c7986fcea. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL8RL2508290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c3b14e7ff16dae28d50cc0921d87fd2c9251b02893462d1b3254d224764a0. 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/COS010400193.
Homenaje a Diomedes Díaz: Mi Primera Cana / Mi Ahijado / Tú Eres la Reina / El Jean / La Plata / Caracoles de Colores / El Cóndor Herido (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ded670111b534263314787a2190c1af1e4a2db812010f0362fa1a683e47e2. 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/USHM82366800.