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 0x2ce005552b7d5cdba649ee119ae760b0ebf7e6b3ae426a40a7bfb24db6cd9dc1. 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/addf07f4-487e-424e-a7cb-cdc96eaf6518.json and https://artists.proofprofile.net/proofs/artist/addf07f4-487e-424e-a7cb-cdc96eaf6518.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 0xec5215b891c8d704a0d0380264c3fc76a31c269c9d9af5bd0861b8ccfa1fe142. 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/BRP8C1200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced1dce2ab104d142f0095cfb40056d4e53b31ddfadffd09312c9c2485267fe5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:55Z), 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/BRTRB2018119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f133748f5b1379009be8f7d902124496fbcae3153270de2f0023b1056c9a8c. 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/BRTRB2018122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19a7554816748472b51cc26d4b88b4c658f35eff278ea9b9cb3fb00632094ae. 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/BRTRB2018127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a3ce3cfeeeea4b7014f6c1aab51490c3a72c2cabfb407499dfd2be86223b61. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRTRB2018113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7859c553413dc5548675b74aa7d77603dce123149d2b77cc0f8ec6415163899e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BRTRB2018115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cb1c49f8219d9522f0dc31a739101b4f8bb068ef3e86581ed8a3842ff9eb95. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRTRB2018116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160f3819787133de66ac4e3c3d42517d404dbbc5b0ef61b472d88069b79a9f49. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRTRB2018117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9da4d9c9f97110175b5c7f8896185cd31008498ef4f2f0ede075f56f9579b8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRTRB2018118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced1dce2ab104d142f0095cfb40056d4e53b31ddfadffd09312c9c2485267fe5. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BRTRB2018119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9246202fd91150835b2461aacf529b72a1c3c1dba061060f57ee253cc14933da. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRTRB2018120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e16137f2cfad36d23b170e398b0d9482b3be0a484715eca5cd8c3a15c854aa. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRTRB2018121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f133748f5b1379009be8f7d902124496fbcae3153270de2f0023b1056c9a8c. 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/BRTRB2018122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe625f470c1ee7814a17374ea67f55f18cd0c7e17f2100557a8c9f91cf546ac1f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:10:20Z), 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/BRTRB2018123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b2d8011dbc280a255d99a5f57fd235f85a437b865b0a8fdea3db26a28d3d88. 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/BRTRB2018124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c0edd43096c5d6c71d3133c6e04a01e31a5d9ad596ce0263a1059ed0e9a6c2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRTRB2018125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488daeec1dc3a9da6f9c53704f529e37e8e004d1d8ea103a82c9f19e581f48c9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRTRB2018126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19a7554816748472b51cc26d4b88b4c658f35eff278ea9b9cb3fb00632094ae. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:10:27Z), 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/BRTRB2018127.
Cuentos Clásicos Con la Gallina Pintadita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e79067e19ca2ab1a77ebfe34a918dd36a96747b24c62da3e436258ce2949c4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRP8C2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4360a4b956619af85ccd7c961d941ed94898f074e6194902eeece62bbdea26d4. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/BRP8C2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e79067e19ca2ab1a77ebfe34a918dd36a96747b24c62da3e436258ce2949c4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BRP8C2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dca8dcee7fc8090973b3376a8cefdb708516cddcebd91c97ab040138290a25f. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/BRP8C2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29db38a03993eb0be7128b996dcbdf7b0da13b80cae9c78267cd91d093777f89. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/BRP8C2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3344b4ca6f3155a51fd4f81d98228f8ef9c3ee712e1899cfda5eb8fc8d5119. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRP8C2200009.