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 0xb839be08b487c48aa9b3894bd215a32effc3332237e3bb71d4a172853e3ec37d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6186c73-f1f2-417d-b053-d7ee8292253b.json and https://artists.proofprofile.net/proofs/artist/f6186c73-f1f2-417d-b053-d7ee8292253b.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 0x898f74d4c03f0ba807bbadbcf3835d44cd7c8c5c9e93a761a9fd77577e0ddb1f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES18B1900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b09ac20f051fe881fbbe745f2765c0b2681acb20aa32ed54afccd9baba8050. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:58:39Z), 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/ES18B1900468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ec8f63effea18f5f4dc3cd819957745d0703e306372523186eba4ad5c3a462. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:06:01Z), 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/ES18B1900469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cec518c92229aaec38f76117177cb5cb138fcb4ab5c2cb0108dd0dc905a51af. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ES18B1900472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b630d483708933bb54e17b185e2b8ea1ae6be0278fcb1fa3e54371bec1fba7. 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/ES18B1900474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9305266718a97d2b1cc0c867c6eced2634ff821e743baf19eb68c0ea23bd65b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ES18B1900475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89368344ac520b1da8290b1733067546a685ba43da016a6c0fd64955930e8c65. 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/ES18B1900476.
No te importe la distancia (Villancico en directo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aa04aa87148022bd43b21637075a372670f67f728f230f92b1b1ce75fbabed. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES18B2200476.
Un Señor llamado Tiempo - Un señor llamado tiempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bc1415474453aeba362cea306deb31ce5509e612e85489143786d31f9c21a5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:39:49Z), 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/ES18B2200477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb925c47d226c8fdf62b939bbc6dfe3e4b26a11a79dad7a06caeb65e35b1c16cb. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:15Z), 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/ES18B2200478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cf08b6dd3ef5bc6bf453b848d3ae2ea38d4414024e4e2df7c07d764d339861. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ES18B2200479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d306e115c0ee0fe4270655de6d5d27adcfed9d6039d8a4e089ad9f3536991d. 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/ES18B2100479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88803b48438823fd504e2e2515a73f7c801e3f954b04675249d22edb7bd2c45f. 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/ES18B2200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e448f9b6e85d8f23352b657a38933b9496298e44e5e3742abe5840381a331e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:43:17Z), 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/ES18B2200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb640593c223d18db8acc3386b43242098d65db02bba0568aea3b6ab76836881. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES18B2200482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa533bd05bdd66617a3f8b1e6c6abaf7ce988d4b0f114b921efd47bc7355d7bac. 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/ES18B2005454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7e4e7246a69ae2d57dd721077e4265e811be54627df91d6c4b75e837bfebde. 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/ES18B2200483.