Altafulla () is a municipality in the comarca of the Tarragonès in Catalonia, Spain. It has a population of . The town of Altafulla has a beautifully intact old quarter crowned by the Castle of Altaf
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 0xe20d33b7357f3e7e7f10c9eda29d97215b14c75922871564ef2a380961f90067. 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/4bd8d687-fc3f-461c-b637-6b77e6e85083.json and https://artists.proofprofile.net/proofs/artist/4bd8d687-fc3f-461c-b637-6b77e6e85083.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 0x442e5d2ff2720417ec5741856407b5a38d6957606124d834919a0a762b589298. 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/BK4DA2320685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2478afc5a7f0d97006ecee59cf6e47b6e082fc0fffd143d9e6ae728f882858f. 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/BK4DA2314977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc72647ae198edda486809d2331dd74d58c18d861c0d2e8935ef49ed0ac015e. 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/BK4DA2322560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043306b8dc1363d1f941af707fdea0c4a777f814c5dfe783bbf5677f39a8dc09. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BK4DA2322572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4753ba8d364a6df6ac1e8ef488745db2eb19f14945e2bc28f3268fae9420ed. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/BK4DA2322567.
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 0xc69cffb9f782d333c254813357466a317e6ea4a6a6fa9a060e2413b412d6108e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BK4DA2322569.
Quizás En Otra Vida (feat. Luister La Voz & Dj Jac)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4000104b16c99194f9c350cc73a19ec458f94657b098cd8e4bb4218de671fe8. 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/MXF152400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be2a66aa1f523b047760944a97461000f64f737565b0ba05ccee1b36a9dd468. 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/BK4DA2309309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaaa8328c819b7fca63b454ebbeff7bae87800c1470009a88f2272515ae8063. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZSYP2299405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f1671c73260e6ac0c0eddaee756b10d6358c1fccd6a8024be827aaac04f980. 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/ZZOPM2220821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b281f3cec182aec2b5c6e6f78f26fa429a842ca3aa615ec335ccd76a9bab2e5. 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/COC012034078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509e348b6d7277007a9526d64905a0067c7bafaeab9d79fb6a5dbc268e2827e6. 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/SE6I32092414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585c5cece21c264d309c57dcc048c20c9f369e685df5af8f30fe47e5b1fb3ab2. 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/COC011933368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8bbf8d37baf87e4a498d85ad0f0768029b95d0d531c8af67661e2662144f2c. 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/COC011933369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cd4be7166f109945a0e5b03c3fdceeefdad78f6fc06d1e4af94c94810a1a04. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/COC011933366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926fbc648d5b651a7d3b27426349982630868cb81fbdf929cb2044688622fdfa. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/COC011933370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc5182c6496e5ec835a8c83fd83d665192a6a7e1b13155507293d42bccc594f. 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/USHM81994457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac2ff9d60f9a311636845386a84341658cdb8d297f78fa028fe90273ca5b612. 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/COC011933027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4fc547e65a590a0cbea778be8735c3680011a57e31588effd0fab59556698e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/COC011832967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cd535cd27ae55606bdc4a88c77b420b36eea98512ae8bffe0ffca1ff92ede4. 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/COC011832628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65271c75626481b75719d35475a56a957093206bc4c85664e234310585d968ad. 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/COC011832475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be948473f32b23e3f29d0e8601a4ff8e53a8d50e59c40f4f21c648ae709ed62. 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/TCABU1487663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4a3e366692cee6a53292c1067241dd060e3dc85d7fc1fbbd35302545fcbaa4. 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/TCACL1665227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e55d26dbd3d121ed0bcb1253996244a1308bc0e83d73358ab98c2d15336aaaf. 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/TCACS1639079.
Dakipalla (feat. Henry Mendez & Pinto Wahin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9eeccb304ef8c90a028877537f53da50f4106455864922f25aa68ae9b2c490. 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/ES8622000801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d5c0680e7f170a4ad08f92e4f9c3570e4ad1aa873227bc491e2b833386b024. 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/TCAFA2073879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0acb163a64046c9bfc66d9e2e4c08f88424176a8c9d492ec8b5363fdb6d733. 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/USJE62010000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eb2a2e7aad4611904ed1b822282aaa1633d8bdad078c01aaf08fd453d8a252. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/USJE62006000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb2a20a8543f33090316c2dd730d81746f548d7431e8fa5ad606759d0cf86b. 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/FR3471695311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188e6d580bedd619d1a6dc07c8114196a7378cc718984b50959a6f6412f9c801. 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/FR8MX2001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8611eeb353ba21bbf3654ebf234abb4af262c52bd125b1c5048350e44b413ec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USJE62004007.
Una Noche Mas Sabrina (feat. Big Ali, Eity & Elvys Futurr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081b0c2f1b7ab025b078f85af1833e66d741db12a7dead8d1c701f95bfd739e3. 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/TCAEF1959863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171e4f7d99bb81a492957b566fd8a0381c509886db29eda3623be3e8b904bce4. 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/MXF152400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc9eda9c5e28dececc361c4c2f7ac05985169b378cba303f099a2070a361b52. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MXF152400344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eba14fd917b7190450f14ceb938ba2a5a85a46fd03d774d7b2b2b775b4b9ab6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CLAA22300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100775cbfe3eb4b7a9b1e1c27d739a7b5756738a55fe0197e47883a4c6ade21. 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/TCAJH2521128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b85778e35035f8ee510472948502f4140f4502a0f33d3a2a7fe579bb29cf930. 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/TCAIY2496393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c03cbb76b9992cf917a51a35002c8844099596b139d6012eaba9e2ae628530. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAIN2411989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe9e4fe60e696f3162eef533da54802cde703a3f97f74e51e99293f33d9fb50. 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/QZHZ41970477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835c3e7dad48af9e28d9bfa3259096674599a94c8540449881ce34cad7fce9e4. 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/ES71G1923304.