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 0xf47ea53b4accbb7a6c1b30b9b2ed4978845f0db05baff9041332b5efaa86e3dc. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cdc68d3-8403-44d2-8fc4-a569d47892f0.json and https://artists.proofprofile.net/proofs/artist/5cdc68d3-8403-44d2-8fc4-a569d47892f0.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 0xc18f922a5905ad7611cd49eea84f9796a2d8af5ff62a3ea8002e7e575bae3b55. 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/ES71G1401634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a12f5bfff5d197f300d9848021cb462b75c246f43cac4ee52305dab028dc90. 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/QZ5AB1919714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d83661f3084470247b2addc931dc90ed8e4c578e030b8f86efc390cc982d28. 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/QZ5AB1919715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c19f91c01e54d49c136b1fb51e7bf69bf8016eec207c2778c0d85659ecfbcc0. 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/QZ5AB1919719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80591d1fea8334f4356f9c8c2f0f050c5620475fc006951d422e982481943ac. 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/QZ5AB2005797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0449b9950664f56704f91381267f996829a7b646d32babfbf761978a1eab5c58. 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/QZ5AB2005798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0cc3b9deee5fde5150eaf7eddc65d127c56e6cc44a60cf29876e80a8bdfaee. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZ5AB2288763.
El Zum Zum de las Abejas (feat. Joe Taylor & Camila Rivera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef7c881ce9ba84e956b2b136742763a84f52c65fb2108f00db62641e9cf9d1e. 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/TCADJ1739530.
El Abrazo del Ciempiés (feat. Daniel Roa, Camila Rivera & Tatiana Samper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dc56b60a9ad87a53cf9bf6046b121dd245ff995cd41fc44dd0c52837d38a37. 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/TCADJ1739531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53fc97c6f9e23b341af4a9d63c0f4067ae6dceedf6e1e03fdf42acb669a8759. 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/TCADJ1739541.
La Danza de los Lobos (feat. María Mulata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0eeba3a36b331097547d9447caca5c7db83579909f237f4785f008e9ce861b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADJ1739546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511839d4989843e2b90d3dd8fa98cfc6c15524d98ab1cb1dab6886863f56c37e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCADJ1739550.
Alejillo el Armadillo (feat. Camilo Rojas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd7f1e5013f131599edcc536dc982ee9250bebce15994d69fb4f0f080798333. 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/TCADJ1739556.
El Oso de Anteojos y el Topo (feat. Nicolás Ospina & Juan Andrés Ospina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582b5f3043b22b7bb97d570ea3e0b3b5eaa24908a2387fd3b8e526bdd58f4ba6. 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/TCADJ1739561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf3308bc512cf1ade4b73066471738fc614b9e56c4a73f69ddecd27a21d04f1. 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/TCADJ1739566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae602993660eb188e83e2fe7b5ebcbcbdc6e01f1904d3bb1d5a03ce0cef8f08. 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/TCADJ1739572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47095eead9dcbe013b70f25fe1a35d042520d2e1994331b8f4ed50e9cc04334. 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/AR79R2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f186546ee98701adede10d43b2c4db1a71f7bfd9bdae4bc8b069d8567446477. 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/TCAIT2449003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5458735f5573f5e774183ee34eee81daffc3bfa095b9716a32c877d711269ff. 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/TCAIT2449048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb588949cdfbe7a18e13fa98255a08f6f21275e67508f4455fda3f4610e09e3f8. 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/TCAIS2449074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d0894b94e5d5f709bd2f03818407acf5f68041d2f0a78dc2b82a332c270c61. 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/TCAIS2449100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47095eead9dcbe013b70f25fe1a35d042520d2e1994331b8f4ed50e9cc04334. 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/AR79R2300001.