Tortuga is the Spanish word for a turtle or tortoise. It may also refer to: Geography Tortugas, Argentina, a town in Santa Fe Province, Argentina Tortuga (Haiti), a Caribbean island that forms part
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 0x57239f9b5b74c6d13d08d02e9d1bd2a0e10524db78c2dd70040ff4306a7f4874. 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/40feadb4-5c75-4489-8dd2-7ea1fdcd3109.json and https://artists.proofprofile.net/proofs/artist/40feadb4-5c75-4489-8dd2-7ea1fdcd3109.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 0x23e0417b0564ed0747051a10bde35fad6455bfe70f54c7e826bb01de6a4804d6. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/HUA611901774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461880aef8b1d9d39905e2515ea5a4834daccb31129acbba6cb6796033f1bcc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUA611901769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39d4d5e484949ac74a4ed8cd512a2b2f5c0dea12dee351c8be501a617e2222c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUA612022532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d293660a3dba9277c1bd6c5cded3949313eda8fe99ada43139128ffb77aaa24. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA612201114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fd386b47c274d9e97c5bbd4de9f4f2662c2f6ee921591eb2e2499d8954055e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/HUA612201121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd215cf55e4070a3f5e788090dda02d2334845e0d02a79db64f4d758bbfc144d5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HUA612301217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f1e8d79a36e45e6e3f13a6b79bd1ef2815aaf94084a0708ec3e25f3d040124. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/HUA612302559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9394d814a8c7a93907be356f4b720de9e100b8a11c6926ed7576f788c3a855b2. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/HUA612302560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa0ab8027778231ec813d3ea3c113ce00cc870318275aead7916a48a0feb56c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/HUA612302561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f7bd9d6e540bb3b7634facc32f3a91dec33609001228c1e330a5341beb2f3c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/HUA612302562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd404e086679b856fada063e0f0717af5967dc4e6ee12c677b4da3a748476dcea. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA612302563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf6684b858a1fd773519a45503892c90aef18a91aafa558c5bfd86fb5451152. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/HUA612405690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2d333aebdecb3e802eec19a94d654f428f470710b273db23e4ec496378d7c8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/HUA612405691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3006f90f932b0bba9171cdd429e0d5fa88805df47ca437cd05f172a344c0ef46. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUA612402365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27183882f84cacc12ead93cb00afd7a0c833a9371b3675dda061a3bdffc31f69. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/HUA612405692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b3b10ca2be0e778093d2f3c0e81594a127a5cee87bd89e0592413e990b3016. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/HUA612400883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa0ab8027778231ec813d3ea3c113ce00cc870318275aead7916a48a0feb56c. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/HUA612302561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019ffdd4d435022fce33cabeb6827e6d870820b044e4ec0ada51f3bc60d1c976. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:31Z), 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/HUA612400882.