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 0x1112f9081e5d8b92b15303c498b56f9bccd10e4065b9207d88f693050c9538d0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d957c8e-0d7c-4606-bfd8-78e682d8d824.json and https://artists.proofprofile.net/proofs/artist/0d957c8e-0d7c-4606-bfd8-78e682d8d824.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 0xa5cb09a61d2eaac8b271b88e26193736c39aa29187c46620e663993907338723. 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/ES5152300730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2967f44e7af126f92a4834418c8290bcce17129bfc8fdb3c50754706dc3750b9. 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/ESA011844688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c4650e382836b663dcdce662a7bbb7a3caab0e746b9a6aee182e5907b49d61. 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/ES71G1606445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41111e9a7dcf3372440d19d8343e3a6f117c2d16b0fd970925890238a43e8a03. 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/ES71G1911339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2434134da279e2610fa940a4eca1af4280f5520f79a4ba8c45f4afdefdab489. 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/ES71G2045927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18731404e97aa4e973a59d334861ae637998d81e8586e9b23b19c6698d5a4bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2043226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d2e69164ecf14dc690dc27502c9f88e823d4ad772bc9801edabf2d550e3d0. 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/ES71G2039116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc50b7133854d1afdaca94d3469d3745f5094ccc11cd47594ee0a5e641a37ed3. 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/ESA011995940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eca1b71b664b76e47e07674d19111f8ed445842c52e6f0314977504a2e441f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES16E2000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff09fef389194276899636005b68fce02977132e8763d1cc2c7437b8bc1855. 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/ES71G2216704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6d8c0686436ff6fdde671961c1571269f0e3f1f71e17f31d922f383bf03446. 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/ES71G2113142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41111e9a7dcf3372440d19d8343e3a6f117c2d16b0fd970925890238a43e8a03. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G1911339.
Todo lo que tengo (feat. Juancho Marqués)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b14bcbcf5d91451aa48ed0e6fd4bb897799570ba0d415c5683685dbb537e91. 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/ES5152100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b14bcbcf5d91451aa48ed0e6fd4bb897799570ba0d415c5683685dbb537e91. 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/ES5152100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3143f7508d3c0f797a04952592734c836af481ccd948dd0dc5ddf817fe3027e. 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/ES71G1881403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a40631b8c8ec7f1cf75322bfc30ba625c25d63262ec00659eb889ce547eedc2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G1858205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5845371a976597ab6d820f9c71f1c8cd123046eb4b411e11ddc08f62a633e8da. 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/ES5021900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7db51a5eab91010300bf1923c5d1cd320f93ccd6a230d8d671b9b824d43068d. 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/ES71G2011407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74b056c8c1b5d84056d9d892adcd5f82d82af103d24a5cae042cb0b066a6f07. 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/ES5152300265.