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 0xdbe658de171433fe597edd0568bee2973ef3943fcf2ad19b40ba203386eca71a. 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/0b6dbaea-a481-4aca-816b-fb4fd6b25d93.json and https://artists.proofprofile.net/proofs/artist/0b6dbaea-a481-4aca-816b-fb4fd6b25d93.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 0x16edc932ecd96c7051faafd93da7a566d925a5da6adb93762c9df166b338c26b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5701400380.
Tu leyenda - Himno Real Club Recreativo de Huelva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fed76d4eccf382bcdfead4858bc2f091f95992446261fcd45afcaadbaa4cfb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA011874820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581cdd4ea4016df150bc6ec55b96b77eb0fb307ff95fc45f2c25597a80055a3. 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/ES5701700169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1039868d58c4ec83b2708f4794c258ca1f637b69058c46e87d83974f5950e706. 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/ES5701900021.
Me Quedo Contigo (Canción Original De La Película "Adiós")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7ef5471f173769f429afcd5d684f17e4b7bf49fc42bf7203bf60107d5bcaa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES5701901326.
Paraíso. Cuántos Cuerpos Por Venir - Canción Milonga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdcb562ac0b0a1e1334b161f740cd7a19cc19c13f898d04565e4730798fe1ed. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/ES5702102369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1fe48fe07697c8242507d2090d04f19dbc90042009e29fb49f70740536f3b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5702102370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a9dcafe5e3356845a519a717285d01b4df3dc7d8ef5c1f005a148642d7b09. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5702102371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2c9b87fe3bb2ef96c3ecf5052d2aac1e988e21891d0bb4435b525d47011946. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ES5702102373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e626fc4074c31ed40fc45b01dbcf83868a869e0714b65dba48fb9bccc519d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5702102375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ac231cf49d3a8e17011f6cbc08361e552d3716935d63508e7856a4259245aa. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES5702102377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dddf4d197712cbe4fa7792f5a89b3107c5bcfb1bb21c63ae4ead33325e45a5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES5702102378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473cfeea19c2e8d78c8514900f8f6593d4322159b294b0dfe72f8c58cdcdf19a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES5702102379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3176ac401cae22790dc18360dc123f653bbfd3b04f833489cd2686b3e6d63fd8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES5702102380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3043bf4aef2624c95edb309433766123e24dfa59446f4445e4d065a575a8a86c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES5702102381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4616622900106573645c785c7cb8265831f19bff571c932c9df1d26ac1c78ce1. 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/ES5702102382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24f75d65cab4c439bf1e188de71317ea2ec4afe004c8bf11b772397f5e2056f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES5702102385.
Nana A Medias (Canción Original De La Película “Pico Reja”)
Flamencos: Falla, Granados & Albéniz (En vivo desde la Fundación Juan March, Madrid, 28/11/2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70954936aede2c550db18a0b061772c12753e07f7e405580e9937e1bb3b36cb2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N22579203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc0cd6859f9a46b44ec2633b1256290560a6057d02b4e58fe66452a09bc7c7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6N22579204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c5cb3b85a3dc991969276f50389cd44c73f29ad6da9071cd05741dc043eb89. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6N22579205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee5c69983b482848a206db36bfab7a3be2629baffded9645188351bfe120709. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QM6N22579207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0479ec1433cd0cde319bb05f3ae47f09051115aeb0b71cfb9a6c9bfe4b60fa8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QM6N22579209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4415e4415e16354dec1e827d37a9ddd34565d4edf112cc99d605a16b94bfd73d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:26:42Z), 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/QM6N22579210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884c1c4eb824d3186b02832caf5542c72ac405c47a417cf912f2d181584af490. 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/US66W2000681.
Canción para un final, Canción para un principio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f404f7a5a84e6c5d834ff79b6037756affee7e67b2e3531e9101456b96fa806. 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/ES66S2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd7248d60d79225a5ed3856dc7611c4d6c3fc50a7ed86630a97f92f45628b02. 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/ES5701700621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb317e4b043479880efe089b9009f4e5aa1245d208cedb86c24ba689578465e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5701501326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbcace3ec64e38837586b0ccdfac6b37d34a49d57311ea2cc629a1c2f455779. 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/ES5701900842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa159bf92d08c31261427e73273e6864c9353d7f965202292bdb76a3f54a0ede7. 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/ES71G2430751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc259811df7d1378b3b4b8a6ab9108ad58239fbc2a63018bc364f3c59feb2835c. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ES5701800140.
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 0x144db1aaace5f0e6ac3b6888986d1c6d4e0d5fa8837029c131e022d319748fa2. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ES5701501322.
La vida breve - original version / Act 2: "¡Olé!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1924cac278b1f6676c92c7fdf86b1b3a137ea5d6cc76e278742ca132612a72. 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/ES5701400427.