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 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
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 0xd69602c7e1c4cd0f133c5532a3f562f39b75b3c03056ea7f34fb770899dd3eef. 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/USUTV2001203.
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 0xffa0de886e97e254d27d92bc70b2290d8a7d172c241517039795af0ded9adb38. 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/USUTV2001134.
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 0x0be6606991b9d39f48116159cc60ce7f0ba9a568c685fa9e0347671679f54ffa. 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/USUTV1700749.
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 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/USUTV1700751.
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 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/USUTV1700756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07cc81b34ec22bd454e4941960967944f9512719d229ea442743579826320d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUTV1700759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc7c77b18bc40742ced155044f52f2e1f49d0be0e124d32737f80c75a84f520. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:04:27Z), 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/USUTV1700757.
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 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 0xfb1331486504a44baa26102c201173666b6ebb8b8b9593c9069a3de937b8cdfd. 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/USUTV1901054.
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.