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 0xebac45e7d962b9adeace34f098db0ceca6e062b0791d81112315960be43e89ce. 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/30c7f402-cd2c-4c2e-aecf-494b55caeef1.json and https://artists.proofprofile.net/proofs/artist/30c7f402-cd2c-4c2e-aecf-494b55caeef1.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 0xf2c8b489026bbc0d6d39e1f081053fe32e07f995574625ac02003eede4c1e1cf. 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/QMDA72139383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb746b74a80f268df159e28024dd7245383c1040bcaa781bf99d9ad1b45b950. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/QMDA72139386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c4b30c85f4e3ebe44665d031278d5921df630a870c87f547cf2931824988a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMDA72139367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e47faa36d54f97d3ee58379b04ea4d38a772f62d53732945e65423a14b7c0ad. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:45Z), 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/QMDA72139368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ecbe9443a7a2fb76941959e3768ff00ff3acbebf7f0c50e01ad750344e96a8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QMDA72139369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefd3959892240ba0ed0a71ad6d5b926d676b537f97c1d0c764d88b6217caccb. 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/QMDA72139370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bbdfa2d1eadb0fee3b49cb03e47ca3920918df5b8f038be05986805ae6111c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM4TX2238667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8199f636679886fc071f1b36138eed85bed9cdb0894b338b264a3e73d8a115. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:46Z), 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/QM4TX2238673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16018a28e1c4971174c026dbc1f95a33880f1e43c12ca1b48497d02a33a3f1f. 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/QM4TX2238779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c1ce1103c61901ca9dacfde8cdd3023293d7d43373bd7fc2b90bc2542d2b0e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM4TX2238782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8ded53f7d20772d6c485c23425f61fce46fa53dfed3ebc0a10569d309fdd60. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QM4TX2238787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b50998eb00dfa1248bd0e4e787b5579ae41285a84df26645dc7415ec49d0f63. 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/QM4TX2238788.
Perú: Valses, Marineras, Polkas y Huaynos
"El Cholo" Berrocal: Mis Amigos (Remastered)
"Cholo" Berrocal: Mis Valses (Remastered)
"Cholo" Berrocal: Mis Boleros (Remastered) - EP
"Cholo" Berrocal In Memoriam (1937 / 1983)
Vuelve el Cholo Berrocal Con la Guitarra de Braulio Hito
Cholo Berrocal In Memoriam (1937 - 1983)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdf563690673bce732f1304affec27652e6179479b04de18ca57f847686eda8. 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/ES71G2140188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76714769fa1c92510c0bd76cfeeaa25423d4524c15a3ac64f7c5cdd1f2dc2871. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:27Z), 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/ES71G2140189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf525a9c75e23514929e97eb467ade5c37a9645b83f8533f83717bec8ab014c2. 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/ES71G2140191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee6e42181d8fd3f2415f3361578285c77fb4194edbd73e0cdd423e3ac547c8c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G2140193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eeaa0589774de2b786aa1af28c132b1c8c0cfcce222d8fcbb760e493a2ea2f. 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/ES71G2140243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8d27409d17ae3ce0d387ac77b0f0a946d0fa6407df2346a3b6504803e06853. 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/ES71G2140246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe081ca44b948b6cad9c2884b55d504f2732346c38ebd303dd26bbbed6e76dba. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ES71G2140248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec81bf8ceeb37972b32b731326349599d5ea49a843d2d1eae2901bcd7c8c1a. 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/QM4TX2106457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f87f08d731dba6bca30a9df139cd01bbef60cceeaa0ae98b8db8670b34f38ac. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES71G2140244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393afcd16e3eb2a11dda65c7ef1129c1540036775793ee8fa4491e711239387c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES71G2140247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7066b3a99670f4512d8c5e14c7a3bfb55dcb39f551276a62bf78d71050a3f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ES71G2140250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336a9e7c80fa6cbe79e8860ec31c7000e004288e832d09d316f1a6f72a2766c1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:22Z), 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/US7VG2375505.