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 0x5b8434b3e50a269572ab1a9c34559881965f1ebf260774710aae83cdcc895630. 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/fccb5d62-823e-4686-ad98-b673df08ee27.json and https://artists.proofprofile.net/proofs/artist/fccb5d62-823e-4686-ad98-b673df08ee27.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 0xf8421c36791706960ae174931efacfdfa85af2b9398dbc7199008311d3075dfe. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QM6DC2074430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48945b68edc38c329aaaadc4265f9bcb75f7915cde9f58d0bf1b734303606de6. 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/QM6DC2074433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75de5a0c90bb6ec0cba8a01d081d9a57cf15aae3341a5f24ce8731a2833f4bf. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QM6DC2074434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d405a02d915189673c8685b0b25b2f3a0c92e5819f825794352072cce41f471. 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/QM6DC2074436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7da881535b965eb4688042a3a71015328b44b12386e08496a808c8cfefe389. 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/QZNFJ2500533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97816959ee5c12209dc50f51b2cab09b25f60be91ce6e390b530a10b362f2c5. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZNFJ2500535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d77dc67695ecc8bc24c4ce5ddb3754b4932469052de7b5ed9a927917aa2ac0d. 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/QZNFJ2500546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0414a84f5b958eb17a977c9f6788d6775a7525c93ba41fa9a698bb4d25976e0a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZNFJ2500547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1f78a41376e706e9b72c28732548edf843fa668908263186971feb2c596e84. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNFJ2500548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb490f7d2191da5e68b5124ebdbdbee30060708bab5ab4d3e1e20ab6e703aa53. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QM6DC1724728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59994b4f94fea25540d3384408ec7266b1f39b81148395f927ef830c829d8fb. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/US6R21471721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b15f5e80c96a41ca4445fe05984fa283573350441cc19f530c1bbb6ec73767. 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/US6R21475596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b487f8a40331a75b58bf457879c205837a0bc5915bbb7ec0ba46a07253132e. 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/US6R21475599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9691259231cbb414988de325aa62ce9be4ac4d80723649000686f454ad33b6d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM6DC1664223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7f76e011f02d9ec0710c480c0f3bd484a1ec3067710b5e387cd781090c7651. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:34Z), 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/QM6DC1664224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938a0e9ddc8d5eff9bafcc4f9cd321319818249d14b51909f637bce106c1da9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM6DC1664225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2fd92ce2c235b8738626432cd999a769171477c2b26bf3ba115177742602a8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6DC1664227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e944b8911f27f663c861475b94dc34ad525fb469e93b674988eb024733a3834. 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/QM6DC1664231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fb4809d97c98714e23643023f8b1d5414aa07e00eee51fdd1a7ade9950a49e. 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/QM6DC1674761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70919088485771b1332ff44a8cf204d15361d81d686166c66c9e285532b27bb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6DC1674765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bd32d75abf88f2337e3767005f6d67ef48622317c3564a70b5662d91f0ef31. 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/QM6DC1674768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0255f2370d660bf0c4a52b71627d7d76759f2c00822c683ef9aa0fee73cebf0. 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/QM6DC1674769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79393971f3e9cc5f2df2144b631e9b95935a9fcf58b26aac8a009ccb1cf5300b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM6DC1674770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156cd9030b33036507906b55b8fc4a9d5a3db8867e04ce066f9fffe3bf6977d5. 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/QM6DC1674771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c47daca57ed76868a018f6c4247f0ba3fed0f28b5c5527956d41a036adbbe8. 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/QM6DC1674772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6443b4b20180e31b5de53ce0bc67d0d885dc68063d2bd4988e6723a9f79c45. 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/QM6DC1674779.
Los Telefonistas y Canta Ricardo Velázquez
Canción De Un Estudiante Enamorado (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707c13aec9843f0571b138f043472753cee8740bc7c17d501b787d9e4b138d42. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNFJ2502853.