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 0x54f8cccd041c1151bfce4200df4d6488e05364531ec16c1f66eae02dac169ff3. 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/a2b9fe3e-ac0e-4121-b666-7ccf4787f2a1.json and https://artists.proofprofile.net/proofs/artist/a2b9fe3e-ac0e-4121-b666-7ccf4787f2a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Fuego de las Mulatas (Chriz Samz Remix)
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 0x05221248c00ca7a38c3eb130aee073edf0d8d21bf3784dbec204d2e885fefaf1. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:01:09Z), 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/QM7281984718.
El Fuego de las Mulatas (Dani Masi Remix)
Fauna, Part 2 (Colombian Singles Series Vol. 2, Part 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8999cf5f8e3576446b656310112a634991bfb388b9754c15401e157fa588eb0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6N21919113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e8fd4ebac733af33dc90c428838f272dd9fdc7f81bbb20a557a043317d0f6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM7281801545.
Fauna, Part 2 (Colombian Singles Series, Vol. 2, Part 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e3eabdcc19fa26656cc0161e86c8564dca47a5f416cfc0074b77dd3005ab70. 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/DEXO12085389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e3eabdcc19fa26656cc0161e86c8564dca47a5f416cfc0074b77dd3005ab70. 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/DEXO12085389.
Matiela Suto (Colombian Singles Series, Vol. 2, Part 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318b1b33d1782431ac7713b77634fd0d4917eeb02c5d896deb559cb144c991d2. 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/QM4TX2337486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24838db06b47f326100e200680efab59570eba3d5d76e8808262a0ccb216500. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:45:10Z), 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/QM4TX2366156.
Me Curará la Locura (Extended) [Magio Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba6e99a1cf4e30c004a7c7e2cc7025da10417f4b0be5c040bf093d7a9cac970. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NL8RL2415376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80ed383dfca52c6e218b893c82b2b7ed5c22f904f301b4f22cc7c2f1c7fdd23. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NL8RL2415379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687147502a4f76aaaee064688479bf93e104b0f0dace5d3735766d99b5b63c91. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/NL8RL2415381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058709209cdacad1127474cf63044c27344fa82b3e81f2fb565315db749c2091. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/NL8RL2415380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0e448bde0a4571550c70a8f4f86b6ce29d71b1302e3dca9fcd075a0b61793. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:05:40Z), 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/NL8RL2415377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926a1b4ba5b6429163986905a6bd1d394857b8d96dc450208a2884d64abe1a8f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NL8RL2456972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2549355eebcfd0862ca745e2cced6c3eedc78618cc82dba05ddb4aaf087e91. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:41:30Z), 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/NL8RL2463260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05fae8874038c1299e039dbb94fdf9d617642402415a95f7b0592550e45c291. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NL8RL2502389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9f56714757db3086d400c4f08ade25a1086ebb62a387146a81e308858329c5. 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/NL8RL2524659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452392c9d2f4b1ccabfb3826b70181a8fa1161cfde4b1246fe0a28184ced7340. 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/QM4TW1945638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ced8c7c3dd2f4ff121a639573dc8fa72579a894e7125a90420744b882764ed9. 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/US83Z2310234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea6aabf0ace40b291c49b4e705ecf96201de3a428acd050e10361480b79a435. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:03:34Z), 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/USHM92161369.
La Sinfonía de los Bichos Raros (Banda Sonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792cccf76c7169e25399f7810e7990cd306bb448e2d82861f077db22c43ac4cc. 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/QM4TW2360519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562b87d193929df28c642661009153add8160151a15f426b7f89a751d4ee1637. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/US83Z2304353.
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