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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820631dfc1b499446fff249a63bbf83a0a6f9fae038fbe08d6434d1646b1469f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9fd2f24-2f7f-4133-9d81-eb003cbb4b0a.json and https://artists.proofprofile.net/proofs/artist/f9fd2f24-2f7f-4133-9d81-eb003cbb4b0a.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4895d7b09263f0022e8a78fc9eb07546040665a68b6150e8dd1e7c4c124ec312. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES8570020702.
Primer Acte: Duet Canta-li sa Lliçó Clara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00a2837e04a0b931aefcd24e038f36c869e96a5a7a3b6c38c67f4aa96c7a2aa. 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/ES8570020703.
Tercer Acte: Jaleo Jota Popular de ses Festes de Sant Joan de Ciutadella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad193400d455f838a53910e7147287de8c270760d216a75622d7067ebf34038. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES8570020714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52947e4e6e63ef9823adfed73fae8092dc77cc3d74aa9c705826191cbf965fd5. 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/ES8570540101.
Himne Oficial del RCD Mallorca Versió 1997
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eae3db9f50d23dddf32ff20129e7927efa71828bfa446f2c8adf8b5224a187. 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/ES8570540102.
Himne Oficial del RCD Mallorca Versió 1997 - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de0ee68eaf2b5c836a926dda89c878c11d1812668f4da2f573079a0ef34e0d2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES8570540103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d8f1554352672d38350462248774c7d0e5a88ccf3cd7814eb51c5fa7aabcb7. 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/ES8579600514.
Orquestra Simfonica de Balears Ciutat de Palma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5dae6fbf5b7feb643ce2c9800b7dbe556b850dfe9be31ad5d7ee7f7f67b06d. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/ES8570540105.
Himne Oficial del RCD Mallorca a Europa - Veu i Orquestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1334002426ae5f2a4c397c67988c2cf65bb77d4a18e8beded9d19c327a0972. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ES8570540108.
Sa Font De Ses Tortugues - Himne Oficial, Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791c5109df32f3f119280ab67b12980bc1eae859576d64f8b83edaf543c7c8b4. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ES8570540109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82ed22c0600bf5b305b800067f25454633ac632a40b6ca5df352727168ec032. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES75G1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96ab1ace2f23e911ca30da6997404b41d6bc6288f2f0aed6a43047626782c61. 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/ES75G1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb777eff16bb732f5175a6637ffd88b3510fe54a2ac44dbe1c8fa957d28e59a21. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES75G1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb626695f634fa93f37c06d0fda5013a6efdc767ead4a10790d85704922626. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES75G1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c8db601a0d87cc7139c2f74762319e1da423be4717c913f784668a927e1a09. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES75G1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58443cf1e84d321d1c458711a3da7a1f10df07e491b90db1d6bf35fe7d7d378. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES75G1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0137eccd7f371945542890f7e8d6e206fe9c09ed62020ebd8810c91c3e9063e4. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ES75G1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea32cf5ceebe19f2cfad9892b65eae4e0294052e432bd04d9a276c8a02565c3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES40B1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6c5d586eda811123a7a9256505b102a93f2a88588c723b6c9b8bd168e999f8. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES40B1600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce00bbd1b44e96aa51c0dd5c0fc47b9bbe46ae3fa23b83fe1f290912bd6c684. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES40B1600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a769d5f8056a1af7d8341ad04eede4781d2e175d7d5170e555c8c7553c329. 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/ES5302575070.
Tarragona m’esborrona - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c394cc6120479b586141a0f9c96f9221fafc5dc6a5b02c636e756414975f9. 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/ES5302575071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed6a7700340f35fbf52d9bbbf990baf189b034860f758d4acf204bb816dc869. 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/ES5302575072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2be8a6659d523512c5da0db2fd8d6dbb35b63d989e689fdb91fcd485704e9. 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/ES5302575073.
Pantalons curts i els genolls pelats - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd51fcab7bb291d10d6ffec9c6e27e519951017a34edccbda8591f01eb9474f. 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/ES5302575074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e294db391bf37376f55823c91e68889fab852ab1213c0fe390d2f26ebaa5c7. 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/ES5302575075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9255288a7952a57c883cf8bb68732fd6c0f222a4111b6a05b75981f4c44f97. 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/ES5302575076.
Tantes coses a fer - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15baacd27493a33e3aab274985974cf63a9b551071443671c7f0abb9b08e5310. 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/ES5302575077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94409ffbd056211fb2186454f7912242d6244a21ff6d6b7bfe7abcf9ba2b6d. 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/ES5302575078.
La vida és bonica (però complicada) - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c643a216c0393d1a3ef8b65355ca163a8db49b93701d60156fd60cff27ca3. 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/ES5302575079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae63274fb34a92e7752fd319231e872cde87ddb2caed7f19e21cf3080b60bbd8. 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/ES5302575080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1aceeeea53b35736aabc91893180e4536a3fcaca414b0663f5e251cd1719a6. 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/ES5302575081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572841e353cca41e16aa692bedb0a598a03d88581818f1b9f101ca91f9bbfc5e. 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/ES5302575082.
Com anar al cel i tornar - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1915b8d7d46fb244e8a424471e0df3a65813262b69e41099a1d98de7933a4d. 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/ES5302575083.
El que val la pena de veritat - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b7e26c47f3f01a0443733a1ab843b0d8e00061928a1a9d22ec1671f74904c8. 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/ES5302575084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d09cf6518829b18dafc1eb2c9bc419775be7661d8ba9f691bfc49b9c00e3ddf. 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/ES80A2521501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05774fbfdb6fb3f3d09c38e48741570348f722dba4dd3c9cd4559c40e0484d3. 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/ES80A2521502.
La vida és molt avorrida sense el teu cos - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f32b8e1bd24eaaa489f725d832657fe24c66168634116965e2faecdd1d710c. 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/ES80A2521503.
No vull que t’agradi aquesta cançó - Remasteritzada 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24d32c4e1d1d2853975893f247afece44e3d9615a9eb16ed1503f3257dc1502. 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/ES80A2521504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d8c811477e21d45f125c9391b736e1116e3fbc05ff4c0ff01af317b362931. 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/ES80A2521505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaabc3e4a39407d8cf5214eb31bb73a27f96dac0f7795f76b8ed0a435e0536ce. 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/ES80A2521506.