Nathaniel Simons (born 1966) is an American billionaire hedge fund manager and philanthropist. He is the founder of Meritage Group, an investment management firm managing over $12 billion in assets, c
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 0x81fde644ce025f0534f46fe7393255d92d1f25b69c67ea816bb15129df58d043. 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/9daf9ee8-013a-4e9b-a5d7-d87b085ff4aa.json and https://artists.proofprofile.net/proofs/artist/9daf9ee8-013a-4e9b-a5d7-d87b085ff4aa.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 0x12361af603db529efd803e6c3010d53cd7ccb9cf1bb07bc874d3fa62863ad666. 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/ES31E2407363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe07457b31da2f24e3867c204052c20a9a4df02cd1715d3e1b623174fe6a520e. 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/ES71G1763771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011a6c369a58394b0f7ce876599ed3fd8b0125a4d3634fe4ad42e4dbd20db271. 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/ES44A1605302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1fc11699531a2d7f8bf90c4c041a38cbdeb58953419a3c39688bc5abe5dde8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:43Z), 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/ES44A1605306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022d9133efa1341781ffa9d1d6c11865f788df48caaab8fbec560b5367f490fc. 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/ES71G2133146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adf3ff9c761d41dc19fb650aae0a1aacbf75d4a752781aca7d96b16247f57a3. 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/ES71G2140920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d37510fe844490bf6c1a402789dc3218db606d663ac8846e7cb2bb489b2165. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ESA092314810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3d87708b7795e8a2b8beb73a747f3b03d2d4876dfc6c9f3a802cb452fe8ab0. 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/ESA092321318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cec5e4424bd60bdf37c7afe0be8ff5912c463f4123bb34a30648675db93ccb4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES31E2306321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07baaef48b5c631c04c6896135b2d040e9d121c485dfe039949af40c065bfa4f. 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/ES31E2305295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42107664216713fc28bf3d9074bd3b4f5b463004f4a3c6d7d3e1cd0669dc7ef. 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/ES31E2306319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae33217389c37b6a67c4ffb66d1132fe66afac96cb6bbb4ff5de79fe705f57a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES31E2306322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b0c1c35490f67f4028d081f5aa2f6e9c4864b55d25fd060cab48a444fb770f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES31E2306324.
Macabro Plan. 7 Vidas en la Sala (Directo desde Wizink Center)
Macabro Plan. 7 Vidas en la Sala - Directo desde Wizink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760546e094cc82ba5f45443c447938f542c5a5446855f49532cbb956dddf2eea. 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/ES71G2422815.
Big Bang. 7 Vidas en La Sala (Directo desde WiZink Center)
7 Vidas en La Sala (Directo desde WiZink Center)
You Just Can't Imagine. 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44052b041b8bc76a4d145094b850689ae0b6110514d7e80508c3b580e9aac19b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G2422819.
Macabro Plan. 7 Vidas en la Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760546e094cc82ba5f45443c447938f542c5a5446855f49532cbb956dddf2eea. 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/ES71G2422815.
La Noche Es... (Because The Night). 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7e136e6b7fd709823d626ca8365aff1c9abb1368c8534c6100030203bce222. 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/ES71G2422821.
Extraña Religión. 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca74cfc3453dccc045ba9872b19724635ff963569d8ddbd1c0fbe04dde83d1e9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES71G2422822.
People. 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd82724742f169891ae492b3e125c60fd1b74361e9050fb10d42afbe8d94b02. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2422824.
Ain't No Blues. 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4bc9c7754aee44e3b6e96b96c4c12e5cd337a584497e57df43cb0df41f5ec9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES71G2422825.
¿Qué Fue Del Siglo XX?. 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770a6aaceb4233adc775d945c3645003fcfb2fac4a4a83b74a5dc9b96e6458e0. 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/ES71G2422827.
Llámame (Call Me). 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4ddcd5b3972eec5952b248e4527ef1f8cca36a8347c231b126f67264722dba. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:12:05Z), 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/ES71G2423499.
Queens of Noise. 7 Vidas en La Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94646ea64b0ab0a3fcfa556511a7dd409fa06460075948eb569e06ec0e4c402d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2423501.
Big Bang. 7 Vidas en la Sala - Directo desde WiZink Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5912e94fafc79524395e6781864de379165099f9292432d300d607f4cb6477. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:10:43Z), 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/ES71G2423505.
Cruzando el paraíso (Directo desde WiZink Center)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998740b229c1529cf64a9503db946d711cf2f81aaae2ad0ab867a090026e504f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ES31E2504091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebb65b794ef84028699c36aa6416628255514fed4b16a3d1017319c08b87208. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ES31E2506014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cee4c2001e21e2d37f314ab08b0336320063c1d3a80b62553e86076502a7af. 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/USA2P2556529.