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 0x4676648a41b4484be413abcf72f411d03725a809efe742954e4e99256eb394ad. 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/7dbba5d3-5826-49e9-84df-cf666b74ee44.json and https://artists.proofprofile.net/proofs/artist/7dbba5d3-5826-49e9-84df-cf666b74ee44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LUCES DE CIUDAD (feat. Álvaro De Luna, Dani Fernández)
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 0xc73f59b1cf78d92190488b932b1d20ed83f37430e5a2187172d88a925f0684d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5152300604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4b478bc56121bb1eff47c02bf5b2b0b645a6db81f5cbf80fca9027df39983b. 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/ES5152201061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326af1ec958015d16c88f5cc2de15ca1f751936868cbb5d24c0dc7a2190d9738. 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/ES5152100941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781bc73cb4f974cb820d3f944e1ff9809a2948e42f6040733f885122162b0763. 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/ES5152200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f904be71374a27821ed4f1c5dad873b9c677dfd9b42a9116bb310fe5a222dc0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5152101179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77fa79f3bed23d53f932edcf79a4bccd8a0d88025299c7031f47dc3ad54c396. 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/ES5152400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a2832d69790d70858939a065fe91093dee17b65b494c2cc6611624884dde5b. 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/ES5152400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326af1ec958015d16c88f5cc2de15ca1f751936868cbb5d24c0dc7a2190d9738. 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/ES5152100941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd7fd7791e7aa3784447702d93eb33204f2d7905079fc20d3f156231c26af0. 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/ES5152300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6045e6ae2af131e00fdb2ad4e4aa9b2f2c6b8997d09534f9e88e5538eb7fa1. 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/ES5152300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcd7fd7791e7aa3784447702d93eb33204f2d7905079fc20d3f156231c26af0. 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/ES5152300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6045e6ae2af131e00fdb2ad4e4aa9b2f2c6b8997d09534f9e88e5538eb7fa1. 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/ES5152300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326af1ec958015d16c88f5cc2de15ca1f751936868cbb5d24c0dc7a2190d9738. 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/ES5152100941.