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 0xf829fac980268806ab9a91fd2fa664a3f762986a52d9857a8aecbab2d9df316c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fddad172-b7bb-4a3d-b98d-d3baf5c41432.json and https://artists.proofprofile.net/proofs/artist/fddad172-b7bb-4a3d-b98d-d3baf5c41432.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 0x896106944b2efcdf268f0cd32129b7969b128f50ab6380587613b0079cfdeba8. 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/QMDA72205824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb874b1714d8d6157e9ddc1c68635f143039b7d65d01546f58202d5007463476. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZZOPM2106421.
UN VERANO EN MADRID (with Yotuel & Yago Roche)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ecb16a4d9f7fc8bc12408c3b3ccf180242bc0398348300489163a4f5514202. 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/QZWDW2379390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a5b14b0368a83b5c07f68f379e26644086c185cedbf9cf659e0a9a9d676b94. 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/QM6N22368733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0567371e0864d8078c9a0457b693acbf92b6c25e92c2ce6d5a3a3d61a9263c93. 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/QM4TX2388951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e36bcdd89e228118a9635664dc7620382716506c13a48df572a074ab59187fb. 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/QM4TW2390132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58a890d235d408306b7bf748ef7f30e727a1f99cd344e32e18eb52ace1663a5. 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/QM4TW2303780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac2861ccfa078c566383ee969e88fef37e8b00d7236d25f73886b5f38b7a571. 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/ES5702201474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c5b2cb6ba1800bd4e32dc9304b46adc85cab2a395380fdf88ccbeb850b35bc. 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/QM6MZ2265528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e82bc4f380e9a14d33c8daa9b8e6388f5719711dae8f7d8ec462b4c64e6982b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMFME2135684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571b1762be499118f4bda54d1370f6bc7081a1d69d18b36763f95386ada1135e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES21S2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503688d6e0629f10661c9321a96c70c7320a0dc16b7418c7bf489507cf77a3ee. 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/QMFME2055243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dae640293e9c7553b5f0b56c437e3a730b1e6c3b4350d152a839623efddc49. 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/QM7282025734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe798f129500b92d771bd00afb3949873931fa073922acd82b78cbb7fc9e14a. 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/QMBZ91999979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb65f007e09a1ed20ecd6ad22990dc4a14c3f0643e9a9db307e3d8124eecf4b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6N21927022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de7acdf0832835b8e5971ee93e692e3eec9184d08d707fe789a333bf5479e9b. 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/ES5702200465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a641d719ef5471b271a44006d8d8089a6ff296b5c6a7ae54ade14d5354e4d5d. 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/ES5701900626.