María Francesca Ancarola Saavedra (born 18 March 1968) is a Chilean singer and songwriter.Francesca Ancarola Biography – Discography (es) musicapopular.cl 2006 – 2014, consejo nacional de cultura, re
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50c5bb7f2be4e66ebe233756909ca87ffc519747d35ba168c6ed9059c5be75e. 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/cf281f36-cf00-4840-90d0-082f5c74f4f2.json and https://artists.proofprofile.net/proofs/artist/cf281f36-cf00-4840-90d0-082f5c74f4f2.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50576f0f9aa26d8ef2d7a6feaf0d11912e047e30685f29b010bfed9224953d11. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ES71G1615296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caabb3dcdba3a592495ac8b6758ed3dd045befd4948c7f462c37dfe4dd3d7cf. 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/ARF102300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a0df0fea539613e6675589156c43a9344834d12597dc92ec35a67e10a63258. 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/ARF102300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0db66ed73e9f1f5271427a7f45e5e7cceb778db7efae1fb1db7bce37614dda5. 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/ARF102300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0e052daa6068ef5975d89bf56b1232d54c2f5bdff0eac0f4cb6b38a43a75e4. 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/ARF102300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7700f17e8026e3e724659a96a835443c1fe7d499c2cadacc7e63279bf043c51e. 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/ARF102300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac28a7dafd4e84b037b26117de6ef8cff34064181d5a307905e5d754e5dd7a0. 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/ARF102300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449cbd050898e633b26cc0e7740d06bdb2364295c45b5f7b92f8f6c57f1a9a7b. 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/ARF102300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcde92ce0ffef69fd1fdce35a4ab9626711c1749580097360d85effd440e0a6. 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/ARF102300118.
Razón de Vivir (feat. Silvina Moreno, Dakillah & Daniela Heredia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039790037ea53ee2bc8e4b7e82621cbd1814b36d24011d2a1d3a5e67eb1c57b2. 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/ARF102300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023653e15adb7d5d801ce262192df6c91dbeab7d4d891d1f38bbb2f528e2becb. 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/ARF102300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d5726be82a4c2a60331bc36dbd367c020d0f8a20d90770016180d7de53339e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMBZ91698560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713178e9c738be6a71801a6a5689cb1d6c459d5b1483b60bdcc13c312797d433. 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/QMBZ91698567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122aafc0dee6a938036ea53d75192b25dbdbcfe4d687639608b920b6db2124fe. 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/CLCR21200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77936f188d9baa7b9791064bdf8cc5eac5e3f9d1c35c9f88db9c1528f6dcbcb5. 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/CLEN21400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd29759d4e2300b59733c8ba186842818b90d0391719a2beaa4eb35e8f4ebe8a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:46:57Z), 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/CLEN21400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc566fdf3fef4e071c19cf293703651212ff5501d05b6df4da3adb5de8bf00. 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/CLEN21400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322163260db959bda437ee2c4d168d354204983f3493bf51b65dbd9f589349cd. 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/CLEN21400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9742d0169e731b5802c90cd6c70aebb2fb2e90d0eb4856cf0621f473734442de. 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/CLEN21400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe95bb291ac29d3e49b6407529ea93d3c50a213ce32d727d443e7fb1d8e8145. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CLEN21400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f94a2e7fffbc675eba0236ae22680a848e20031a43096b3ed35c375d5d920c. 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/CLEN21400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5635112406e314812de0c832648f0087d403e23c5a35ad833b3fdf7dbfdd975d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:27:55Z), 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/CLEN21400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df42af1f3552f2ce951c71ac9fcc359868170a26d1ec6df5d19205161fc1b2f. 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/CLEN21400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b7cce2a364309d6faa336d6eba0194d19bc50730488384b087cb620f92440c. 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/CLEN21400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0cb711acb0b386f2f7a018a99d961f6ceaba2454dfaef0e8bbd57f5b6063fb. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/CLEN21400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00045e4d40743258f21e20257e5214294e63401dc297431d46ffbe3b194aa6c3. 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/CLEN21401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46664ee9856d7026e81d92f54e24f75cb762eef27f19f9459739b0bf5c7204eb. 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/CLEN21401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5439d4f067ffc811391b84485ae54a7f5b10736193a27a3865781866f7da4f2. 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/CLEN21401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426ec22880bcf21ca61914e5d4bfdb41915a79069eeb6e987db40589f3d90dad. 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/CLEN21401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bf63b842136e62ddbaf04de81dab9232402e905d9dcccd3d785f29150b06de. 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/CLEN21401009.
Sin Sentido (feat. Ana Tijoux and Marquis Hill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580769888982d5f4db4ea11fe9156088ac6437b25d5e4f76f5fd6cf892619787. 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/US2W61852003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e6292eadca9722d93c1633b64d7cfe020eab4d11b879f3d0910ab428d35f42. 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/CLEE20801259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5560ad489871155a3d522cbf6259ad8db0663e7bb2e2d680b50149c4007801. 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/QM4TX1714249.