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 0xcbffe8fc3788552a78b3b745505d64ce3edadf6202aa0218ce1d416f0c9909c6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e86f038-d984-4f3b-b424-bec04546e700.json and https://artists.proofprofile.net/proofs/artist/0e86f038-d984-4f3b-b424-bec04546e700.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 0x84273a24af74492f9933fe82e00d5ca7fac160e81c9e82d434e91a4bf111a131. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6I32165011.
Grandes Exitos de la Musica Paraguaya, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b09b3e139cf7f77aa4b76025ce140b49ab4b1191b93ac3c08a10320e0b1554. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE6QE2185902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e9c5c14f09b2a08bc63c0f82fce89685c06b7621386c67e09c4dd809972130. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6QE2185904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df18f5f80c14f69214b7ecb3e73d19fcb724367b20018e628627ef4e7d376d0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:18Z), 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/SE6QE2185905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c388cd810b1ab2e7dd73ac6fe62d112906c5bffd7f156cc1aec2c201aeadda1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:04:44Z), 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/SE6QE2185907.
Merceditas / Bañado Norte / La Calandria / Paraje Bandera Bajada / Retorno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4b476c0bcc092d410fd1924f42e67bbb7d64ccdabcc71a72c60dd40fd5b083. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:29Z), 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/QZDFP2023574.
Km. 21 / Camino A Tres Palmas / Laguna Totora / A Mi Bien Amada / Kurupi Lloron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c15ad1489322833315f41a1eba27fd5152f01333b0f44a4b84099cdbdd99a92. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDFP2023576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635f570cd5ebdccefbce3562e551ddecafae1d9d74556eca75bf58bb813aacaa. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:33Z), 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/QZDFP2023579.
20 Grandes Exitos del Mejor Grupo Electronico, Vol. 9: Nueva Era
Las Mejores Guaranias de Ayer, Hoy y Siempre, Vol. 12
Che Chika Porã Avei Ko Che - Grupo Tavarandu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a520ac99561fc95b061c9a674ef9e9379d5d304183c67e5bb7bca220ae1af9e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMDA61582750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9405f4544da474f1cf6366ca7b6bf196ed84a24ba3be958ed71a4b653410feb2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMDA61582743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa901cbeb09069119c8045ab3e3394ef07ccade92acb149861b0d5cd3ed26aef. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA61582744.
16 nuevos exitos de nuestra musica Paraguaya, Vol. 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7746f9c56834b61dfa62caace289474f3479da1a9219dbf14ec28b9ee7edd9a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/SE5752187513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a4fa7d0c198356a42fa84473dc9b7f1c7976aac259684dab21e3433de90ea. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:33:32Z), 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/SE5752187602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf444713003834efbe8895b537c82ce3c8cfe3a614bfe8a72ccc26f7a3fa4ac77. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:44Z), 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/SE5752187663.
La voz romantica de la musica Paraguaya, Con estilo, Vol. 27
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa594c70842ab9f58c0925318f6bbc147eada0526422dffdf6e276a12bd015193. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/SE6QE2185903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e56150e9b0dbee22a71ee6b1fc92b6398375d59cb6faa7c8ae2417243f3f11. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6QE2185906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c388cd810b1ab2e7dd73ac6fe62d112906c5bffd7f156cc1aec2c201aeadda1. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE6QE2185907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d0fda74edb241d220549c01ce3f448ca4ee1e2aed83bea844a852b603446f7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE6QE2185909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a53d2ec2b5221bd091354111487dc17854891da9b37d17c8ec0c1e87fe40a7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:27Z), 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/SE6QE2185910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b7f40ae14b4ad6a4d43eac5f74d078c7122553aad580cfed24c1585fbbbcc3. 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/SE6QE2185915.