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 0x276dec6264de245c96ec8df40549ba48f6c557ba82533c42a7172962cd60eabb. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38ad0e9c-2ba5-413d-9acb-9f22697b54d5.json and https://artists.proofprofile.net/proofs/artist/38ad0e9c-2ba5-413d-9acb-9f22697b54d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Raíz Spinetta - Versiones Folclóricas, Vol. 2
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 0x37e55e44edfad41c6c40bb89a9b68b098e91b1af24bd0088625226c8861c6d31. 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/ARF391401512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163f8368c617dbb903a1e6ac0a1d55a28806d19f775eee257227610a6e9b5923. 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/ARF391401519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d96de10c0b09a87c6ef7fa7794caeb68d527cdea239b1ec9b4a50d5b3150bac. 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/ARF391401521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1602f02b75f13bc610d7aefdb62c3696beaf4407487a1e25890ccf12186b1d9e. 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/ARF391401522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3720b14d2a8727b33fda018c5d229b8f933fdcf80d3b7d5a4b056fa0a10fbec. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARF391401523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ce5583d816ea74e7a595f0def03432f8d7dac0f3e8ae67265055b663bf51c. 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/ARF391401524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16630346f2a7c4a40a8cd76aa020189cc8ea8d9393448bb5f59c0eec4581cc3. 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/ARF391401526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd640b01a50c9d38c8c2e2b0258baa79206009674024a32224460f6f8b44b6e. 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/ARF391401527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a754dab0c7682526251fdf3df44c88ce3567ee44729a483b1a4f85c4e00b828. 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/USV351463501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20973d1e266eef92c7d398e117e2be58dd477c3af50d46cb61584923afde84a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARMZZ2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a149af0ea46f273f64b28fb7ea8aab543fab5e8bfa7f227825736acd918805. 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/ARMZZ2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea94475bdb636db9e0a4ec26cd9652fa33870c09da81fd82f026be8b95478145. 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/ARMZZ2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44822ab1f200f19ae37419f05783d493e2d9b58685dd540c56f5f1dda1d2ccf4. 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/ARMZZ2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceff6003c77580f419063d8f0d3b584da3e2a880d7321b49cc728f0f1ef331f. 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/ARMZZ2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb754c5379d14d63cbd6b2ebd33e7adbda2c9f26eaeb54362011cec6a65954393. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ARMZZ2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ac91e8280cdf40e093e47b22f6b4fcdeb5b01a6d709b8d9a05706b23297a46. 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/ARC972000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecab6422d3330678c9f00106bd7c25af8fcca4503c76957d5594b061aa50662. 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/ARC971700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8f18bfaa1b3667fc6855c745f5df629a0b690d2c1e0ba933bd35c2fbdc795a. 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/ARC971700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de08d6b4d470c6e77dfbee9504ec24be5169a01cdce1b05b2e077d8f6a4d11e. 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/ARC971700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd24be0078d0981b62de5f4116a5d7f09df3bfcf63e2dd5a93cf838f875a80. 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/ARC971700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7cfc5494eb16c022765c9244d9bd7a417a6799848c74d809316305457dc6fa. 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/ARC971700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de0b01606692dca0810fc0b7bff0c33e99780021f43c0e71dc275114751363f. 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/ARC971700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9160807886da7f6d44ee673d5858a116aa3d67f223688c9b991721ea95407953. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARC971300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa423c51205eeda1528ee018defe6025260b0551d3ef0853ceb829666c7be15. 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/ARC971300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceba0cd16f2c2b979047d1772b1f379d0700780db6f3403889bb8f8de175a04. 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/ARZ021103263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a5ea25b60b00ed049c4bcaf744ff4856156a583f750f8346dbc6e0f2765e1a. 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/ARZ021103264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355b022afe11c9f28cf247ee63b1a2855f570d2e8c908d1d4f3d206cc4652284. 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/ARZ021103265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24650aba8ff0ffa39749108316bb82ded21d14436a61d1cedf24d8ab9874df60. 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/ARZ021103267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dd5d58a22ecef5bb1e206059db2e15b032700e22c6f90b2c38c3e9213405d9. 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/ARZ021103271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29af61b1d579236ee837a60112508e6a4b4c7d9e4682f17accb741fcf25ee6a7. 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/ARZ021103273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651e5df5b002816686e08598293b124c764167f0787f0dc24f862a4ed910d22a. 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/ARC970700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540b3c5341b64e9b5f3cc9b72872c71d83cb531de21587f621c3d69c2dee45ca. 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/ARC970300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefeb3f6e09b75175c6b1e04ffa250bf43b4c32b1af28462126ceccfa1c3cfa3. 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/ARC970300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d097e6f39067cf500749ff3b4c2ba2d1cbbc1629ce949dbd0bf607e200dd52b. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/ARC970300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ac91e8280cdf40e093e47b22f6b4fcdeb5b01a6d709b8d9a05706b23297a46. 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/ARC972000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128eb2e918c9902592ab8f382f2260038168ce4c18b0a25dc42b9e79087c92d6. 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/ARJC52000002.
Voces del Folklore Argentino- Las mujeres, vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034d5082a5b00c50366baa7432407f02239eb027bdb659b3f006b58fa33b2f37. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARZ021103305.
Después de Vivir un Siglo: Argentina Celebra a Violeta Parra
Voices of the Argentine Folklore- The Women, vol 1
Frauen Stimmen Des Argentinische Folklore - Ausgabe 1