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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 0xb1a6874dc2a7c817459632c907c94c64cd6dca283dc58082f541b53bed70547b. 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/6e62735c-18cc-4a80-bfb7-23aab94bc292.json and https://artists.proofprofile.net/proofs/artist/6e62735c-18cc-4a80-bfb7-23aab94bc292.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 0xc18c2ffa4955cb57e7a43985b82105623c1c4687b7afc836d27d0d9f85c4a83f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5010600591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4543fffc2bb9617a3e885848dd0ec5a124a7bb9b2c5e841ef8e2ec020755dfc2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5010600590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880b44c01d3c41d3ab19c263c74c6b2d42de19136aa04be6a924fef210b9bd8e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES5010600589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4609f4ff59aee08bcb619f1d5262a03172881fcb0304820448759f24b6e5b669. 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/ES5150800650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10720bde03bf9c8b825b43668161197e77d21466fc2b4f5e716c2a2af59f8f8. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/ES5150800828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d5eff1966ba45b539e0a4675c5b1fd804533915cd0cb599fdb974eecf855dd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ES5150800829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ee434f86eac5d50c76f08997339a8dedbba27f0f3c2ba90470bad5b42f0237. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5150800833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5233e1e0838a84e7cae0a9b412a2b3579f7e3464c1d2dc7773e75413b99e013a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES5150800837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64eb7d883d7874f366cb8d3cac95db0e96bfa19fac74fef7a4997dcf4613bbb. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES5151000439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f275b40afe74f5680967a0e89e8c151be649676dd0748d2ba9a0c842f78d4b3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES5151000440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846464ab2dc2e7eb520483d20f1320a694aaf6858053f9ea76426afdb2e3b884. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:24:45Z), 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/ES5151000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe663868d8e6bb76ec3d6408fbf496c603136a7c84904732350b62c063afd7902. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5151202478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46edfdd61dd3f7e7682f17afd055856b4a7ad5be80a0898c600dbf35b121a1f0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES5151202479.
¿Qué quieres de mí? (feat. Rebeca Jimenez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa522e84d60edf1cb2e258a5c7856493b390688c28f42bc8072386e6058a3fba5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES5151202480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf958b2642596e0b503cf1285859056385f247b98527f3bf57fc6074926ebc5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5151202481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc032f30d4602b9fe33cb774f995d29824b9097bbf4d6e7d0190e2dd8525d4a8b. 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/ES5150800936.
El mejor Pop español de los 90. Memory Park
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a40ddd30b59fba567de24d3c0fd982299537b4ca8192168b1872f4657922159. 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/ES5150800830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df8d50b3a9b7bd14028d133d43d5b23a1a5cd844bf73dc75a125c4e50fbfd82. 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/ES09B1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c7faf0a01920645e549c3408f04a8c6ce12a6a86c052654891e41d6f8bf4d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES5151000443.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch