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 0x4be2600bde37ad098255dbcb75f8cb0ddaafe73114d0b5bf8f4b3d3c3e3e8fa9. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63623150-7d61-438a-8d5c-4ced7ef97890.json and https://artists.proofprofile.net/proofs/artist/63623150-7d61-438a-8d5c-4ced7ef97890.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 0x4f874b1ae0210823c68df79c921caa542142e8b23433048cedb051edc1dfc500. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USUTV2101430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aebce71e332735aab7eb59f477a8eb352c7e393bcfb6c1ea584953be233c41. 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/USUTV2001180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ce23069cbea3e876781cfaa87062e0a59b7392c980c99eb41835769b5b157e. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USUTV2101431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69602c7e1c4cd0f133c5532a3f562f39b75b3c03056ea7f34fb770899dd3eef. 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/USUTV2001203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9074e10d4f7ac2d7ff7485070db169c18305d235d53ef38b72d2f733795068d8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USUTV2101391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb942b775ef03b6ad05cad7152649acb3803d82a4171d5d769a16d51282548786. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USUTV2001153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff0e2e4081fb51e23598864dec2b5274d7dafc72a73fb565fa5ec438ea3fb55. 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/USUTV1901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa0de886e97e254d27d92bc70b2290d8a7d172c241517039795af0ded9adb38. 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/USUTV2001134.
Introduccion (El Huizache, La Vaquilla Colorada, Soy Como Quiero Ser) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68276d4347cdadfaaaf4606ed1adead7dacb3e3484eac55cfd779a2472adfeb7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USUTV1700745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202218a662a5415d1b5faf3be3b6ecf896824a225625cd21c9ca688c52bbc3ac. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USUTV1700746.
Popurri 1 (Sentimental, Amor Limosnero) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09bd6c23b7ce812e3233bacd7008bf496880088c18e2480c5949392ae3975a5. 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/USUTV1700747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a66588ed31b929495ed484de23686cb77d6185e97ecff613516dbda33eb9a1. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/USUTV1700748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6606991b9d39f48116159cc60ce7f0ba9a568c685fa9e0347671679f54ffa. 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/USUTV1700749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22750ae1eb1e6dc67a0913903d38cf2b14cef070c5956a94e62bd09ff1f80ba3. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USUTV1700750.
Popurri 2 (Tu Nuevo Cariñito, Aquellos Ojitos Verdes) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb426ce0dfcc5b3d20421cbd53db98225a5913fb89038973e6abdc7094109c03b. 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/USUTV1700751.
Popurri 3 (Que Me Vas a Dar Si Vuelvo, Cuando el Destino) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a805accce7173e8725c3bf2cad3c130a082c7a4a3007dd57ec193988f1bdef. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USUTV1700752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf376649f34b71b7b6f898cdcad82b8f434c79729f89c4a148b4fd4e7017af404. 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/USUTV1700753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11263318739a280820994a43fa1f7ebd47b4cc9f4f041afea69cffe58ca69272. 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/USUTV1700754.
Popurri 4 (La Tabaquera, Mambo 8) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4479ed092c1fe5c03847521f198f9cb69709b57716c183099d2518b414974eca. 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/USUTV1700755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c8c0365666f87d4b15c0f6c286d76b938c463feda3e840fa074e7d27282e3. 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/USUTV1700756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc7c77b18bc40742ced155044f52f2e1f49d0be0e124d32737f80c75a84f520. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUTV1700757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee25379e39d0596827399b08c735492c7e419ea0729d57b40c9e07663f3e0d2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USUTV1700758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07cc81b34ec22bd454e4941960967944f9512719d229ea442743579826320d. 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/USUTV1700759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc0e6951e3e7dd09b4e072ab7c08dfdf416aff41debbccf98906b3c385167e6. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USUTV1600636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127827b2160731bd12bb3d6fbffd59d274bded2487457d11c1567e2932d50089. 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/USUTV1600637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011b1f6c460921f4137f789571bd73f0ba5d40e04b2934d22a31c055d66aec8b. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/USUTV1600643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213d216c621af48f39fffbc90509fb5c9afb8654991e86f21b9ec23e83d67f11. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USUTV1600604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4908f7bf8ac596c90fce0822c8477d37071fd3864d90ec39f477afe4b46f1b. 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/TCACB1497702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dbeab009fd7655e7edfda37ab2b7fcafc8e1323e87d47535bae79ae540834e. 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/TCACB1497704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f448b6a004de1ffb1c8dc86e896566e3bdafc55cbc5e6c92d4d6b4e747e1c6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCACB1497731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffc338e0827e364b2e95d5a39160d753ad9812ee4f37c6c2492a3d0f1081cbc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USUTV1901056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1331486504a44baa26102c201173666b6ebb8b8b9593c9069a3de937b8cdfd. 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/USUTV1901054.
Popurrí José José: Lo Que No Fue No Será / Lo Pasado Pasado / Amor Amor - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d5746ba392af37d4a403c60470b2c868b36cab2a9e40dc0a96852c33f916d. 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/USUTV1901048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d12146de25714a572423ba7d67ff406faed4356f3ae5e2985caaebc31bab49d. 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/USUTV1901047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff0e2e4081fb51e23598864dec2b5274d7dafc72a73fb565fa5ec438ea3fb55. 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/USUTV1901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ac1e9782808506b83a03a86e9c69bcd4ebec4b9618dccd8cfc6b7941f3624e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USUTV1900984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30d23093284d440f039c40fc93c5221bf2ccc98cbbe826590394645ed75aeef. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/TCACI1559966.