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 0xe218fd024ed9307b84a51148d248fc1873d2c537fabb23bea8639a03d0d8f0a4. 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/e5300504-bba3-495f-bd83-89db697f4572.json and https://artists.proofprofile.net/proofs/artist/e5300504-bba3-495f-bd83-89db697f4572.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arrorruna: Canciones de Cuna para Cantar Con la Luna
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 0xd0f57f8232cacbff9a5e21d9490e651540a338a5fccc75aade1cc99941fda6c1. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM21969121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279c8360a5c865f622c782e7ee457ee6b5e8079b74ace60bd29d9758e9155c9b. 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/USHM21969126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8136b676f1c5fc58597be8c85c13ae739ccff9cf075a1b32625c243050dd7f1. 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/USHM21969131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a0491b9f1224e74ee3889d6a0695b84fddf8576df5479256c28516defbeeb. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/AR1661800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f17aca980f19e8727863a636cfc04fab7271b58d49d4810d4ef88f6fa3edfa4. 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/AR1661800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15be4d07bf2b3a111808fdbdecbfc243b4e19e940b1bc7c3775158cb046d6b1a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AR1661800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6780cbb6fa103418dd8ca488828d076a811d881ed320203c43cc3ee2d9c3c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:52:59Z), 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/USHM81827368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2a15210179acc7a1f52e8c1841e4bf4e90f57f195d7969cc5a6ba6adcba510. 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/USHM81834245.
Hasta el Cielo Ida y Vuelta (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5460e2e96160fac139a6a031385abbfd9042d57e38d4140a4ea6c6605de70ff4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWR2390948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2bc67d5b4b5d8bf76d0d2019e9b82f422893c731e4966404904d82c7c4be1d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWR2390954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fd374fedf56cfeac25f97f30683aafc24204db2a83cfd76ad9ef5c3c4474ce. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES64E2502997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8423fc785a7e8a756f83bd4653e17040556b7565c4866365f24d80ccfc515db. 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/ES64E2506984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c473f5a0f1622d9f7378bec8acc5554f2635e697854de9b95fc6ae608682d2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES64E2507248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201703b5e1bc6690ae94cd1dae9e13d955cc4e709cec8308275b2eae5c1d5742. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES64E2508656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdea8809f436f3fa2d0914a0e0ee600859690d4b22bc46e682eaa73f1096bb67. 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/ES64E2510438.