alt=Marina Rossell|thumb|Marina Rossell Marina Rossell i Figueras (born 17 January 1954 in Castellet i la Gornal,) is a Catalan singer who sings in Catalan and Spanish. She's one of the most importan
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 0xa2d7a4670b3da7ad4e64abb69c73b83b82c095cd9da73c3f24acb09b306c65f0. 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/11ed4899-2907-4527-a076-b29f60297c8e.json and https://artists.proofprofile.net/proofs/artist/11ed4899-2907-4527-a076-b29f60297c8e.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 0xafb329199381a1a22622de9302b21991f037e5551754a472e8656050aa538e83. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ES6101320907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeb6360bd7452b2ae08e63b4e16781188fe33d532637a65b145cd7a276274fa. 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/ES6101320908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e86846b2ba7d57a85db9495db2bac71f170697e2db1fc055e0f7a5da4fe0edc. 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/ES6101320909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447b98c649611e37eb940bd806a8a590f6259578e9f6442ac98b2c72ab2adf28. 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/ES6101320911.
De Que Hablas Habanera (Bonus Track) [feat. Carlos Cano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c420a7d6fbbe7a32e8129580826e4601e7c042b66319eacf5ab19eecb5debd. 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/ES6101320912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fddbe525fd17eb65fc3c2bdd7d1a5262f7bcc2519da6a429deaa73fa1efde98. 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/ES6101320603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3843efc74f0a3e0b304da509ae477a0bcfd3409495d1dea71d5100bb5f1b455. 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/ES6101320301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dae6f8de3b5bb0354af4f09be513324fa8aace43752efc6e554805b5867a8d. 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/ES6101320302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bef685e1b71c2248cbe4580f88fdad20f89e2ab46fefed27b150be667f619e. 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/ES6101320303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3ae6863d8fb7fb4c21139b3a4abb81251a564e135ac879974dc9d28adc721a. 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/ES6101320304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b0f1ec192e2967ed2aa62fa31b608ae0fbff19a9092b0cc314ad3f594a7fae. 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/ES6101320305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a943d792f01c71fa2a11974b31de97ff4474a399bc640659cd7648d084b7c. 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/ES6101320306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70a287e9392c1c5337724b9bb6125bee38cc1a651b0b0af2ea3efbe40e7c970. 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/ES6101320307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c861f00c14cf1d94a3cd80c555e990c88f27c65308aba74c9736379c661305. 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/ES6101320308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7fd8cee249e3dcd5c8167c84944d674579f61d1134ebe6a73aba01988d0ed3. 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/ES6101320309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4a4fe882a9b2a2e690f2b5355f09b8327e5c48a043a07d1ca36a56e2c6cc7e. 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/ES6101320310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588bb46cd48a23df1fd04dc2093e1030e98a35d8b29db6798308c3b0df0872c4. 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/ES6101320311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0377e02e2218d1537346a038090e9854e08b8b028978fc6332c8efd01a499886. 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/ES6101320312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8948440252765d53918a0955da6ad237651289f4a1a266c06efb8526be42edc. 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/ES6101320313.
Marina Rossell Tribut a Moustaki (Directe al Teatre Grec Barcelona 2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456ef815c29fdb7d5c9c0f4380921a07fda487b4cbc0f3fe967f0d3793389a4a. 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/ES6101526901.
Grândola, vila morena (feat. Enric Montefusco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa1a2d568307a03996687c91be74c1aaf4b532b12852fca9febb2ede49c91c. 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/ES6101526902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e87a455691d8bf4db7afe7f5b334e6ef9f8d3a14ef17de14cc195067678b607. 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/ES6101526905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597717e637bb0f0cc9eb84e070cdaa01dd783738d451a0becaec4672c24ed20c. 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/ES6101526907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe388d8d63774aaab60d345d9b497acd9207ea8cd4a979fb3539c1bfa5227c7. 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/ES6101526908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0208dbccd58167a07f0ee2f023ac7c1dd81f7ad111b136e654b2dbe0815a945. 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/ES6101526909.
Cant dels partisans francesos (feat. Paco Ibañez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8508d097666a196cf445bb118b68583e00092f32c20a55f5644c7ed5d3a4e4. 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/ES6101526910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b2fce4e8cb15c2783eb5135b297972507c386234828f9c253fff07a0943ffe. 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/ES6101526911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd52332ddeb7e4fea2f0c19f83805572e9ed5ebc23ab8e298026b1f002f3c031. 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/ES6101526912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9a0a15fd6c614b286e3d86fff6fe457c5e60a7c852368908fcf66e2491a224. 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/ES6101927508.
Canta Moustaki y Canciones de la Resistencia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d020f26d8de92f748217e54d05acad72a13aec77b11f2d6fd8865e918378b17. 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/ES6101927501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3439ea297f5c6850d9e7061ac52f2beaea0b67a7608311701d2e53887fe898. 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/ES6101927502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2712705ac88d395eedf00496ae2eec5fc7403a8454ce6664264b552a07a4b3. 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/ES6101927503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2d457a55797d511502dea50fff5f8278edaff1782e2dedf1624f647ce03152. 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/ES6101927504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4584b1d84b49153a7c0e75ab0233865fa9cd97379a66bb3b33cf9a2a55a3a5. 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/ES6101927506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0be7546459125fd02c8641342869de03c5322b385c7ae3231311d5a6880d6b. 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/ES6101927509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf89d8307b44b2c6625d6a233183b66cf936bc998df6ce8f3456dd421d249d32. 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/ES6101927510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02916fec637b8cbe1fb17ed071e5e3cdd14e631d000930eb75fd9564c3a8741. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES6102124505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd338e8f6d2d286b3dd3275164170bd99892a988e96c972739b2e7eb91576b096. 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/ES6102424901.
Ay Carmela / Ay Rocío (with Marina Rossell & Juan Carlos Baglietto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c923fd20f3da9e16112023b30eff3beb374708c9e286c9141a53e01c6f67d5. 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/ES5021600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf903f863bd46979fe74b21375887acced19453668a7f7bd9e504d8c2b25b7d6. 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/ES5080100346.