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 0x8fab2e5784f1ac50a6690134fee98eebb9c6c06d03d52bcda1a6d98e6e5bf59a. 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/1ef54acd-dda7-4113-9d86-58fb3d6c357f.json and https://artists.proofprofile.net/proofs/artist/1ef54acd-dda7-4113-9d86-58fb3d6c357f.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 0xa8dc86144d915e2aed73a38b2fb00e8701eb43ed1d2f649f7d2f40b11df7fee4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM4TW2249541.
MIX los Bravos de Chile: Tierra Mala/Tu Amante o Tu Enemigo/La Copita de Oro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3393cc846601d9668ee218befee76054731259d7b58b13b3015eab287a88d8b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM4TW2249542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a68b39e2205f7e98224acdc0879f536975cde2741be7fa9a67411f1ebfccea8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMBZ92279126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a68b39e2205f7e98224acdc0879f536975cde2741be7fa9a67411f1ebfccea8. 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/QMBZ92279126.
Mix Ranchero Mi Primer Amor / Me Caí de la Nube Que Andaba / Por Casada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d53c3447ffc94fcea831ad58c6497030a59f8d0d088a8c36ca6566a71a6992c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNJX2359192.
Punto de Partida / Le Hace Falta un Beso / Si Tu Me Dejarás - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d81b3af326e5d8f4c355beec3c960df660aaf697b6e26d6094f15bf59d2070f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:06:50Z), 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/QZNJX2359194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4e252ae80dd5d2c56ffaf66cc1feacc569e6a4b891a8ef8bfd7d5c0e563b68. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:20:33Z), 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/QZNJY2338673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb558afe928510e323043f3a09e179d396c8017d39d9f044fa76591c321a7c12e. 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/QZNJY2338675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8947e1fd09c3113f7fe2ca2d70f187d2e0a6b295e39f860dfba5e4ef6ca16e39. 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/QZNJY2338677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32ec12b0179e98a3920b38bcf771a438553c0624fc3fe21f5626f9c39f3c615. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNJY2338678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac833e971bed917adc6529bcc7b856ac54911c12dd24a10dbd0e8e04697c278a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:32:52Z), 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/QZGLM2411863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1a0cc06090ac7c8911f4cfc727acb4e9a9b6d843eda49cc3554a33de0a98a0. 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/QZGLM2411865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660fd3bb0216c372a795fabf7731e794d55f776a0b1ffc94c4b86699bb73545d. 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/QZGLM2411866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ca32baaabcd0bd5b3a7d3055fcdc760c511a879e9a534cbda2f594b8863019. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZGLM2411869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b9522f356acc368f722c33118e174bbadaee3f5f63f494c346bedd9a315d53. 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/QZWFJ2465767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25efdbc3bc50d595d2c7b53b1063d5bffb4f8c2212bd3d54f188388247c776d7. 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/QZWFJ2465768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbf394f22c5b94fd2251cda3eb90a8094214497ce01861a289d2d1465a28b25. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:50:32Z), 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/QZWFJ2465769.