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 0x8a40a4f531d853b39312c32680efa7a97703fd518814f281feac6999a83a5aea. 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/2efb6be0-c728-4bdf-9eca-62e10b80f235.json and https://artists.proofprofile.net/proofs/artist/2efb6be0-c728-4bdf-9eca-62e10b80f235.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 0x7e01afd5fb05ad01dce3b26c81a705822887e97d7bcbdaf65843d1c7d6fb9882. 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/ES5301150510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf731f3cce57d827046463331a6fca2ab94d53913eb3c0c660a9548bd7d041b. 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/ES5301150511.
Almonteño - Sevillanas Rocieras Originales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55cf371f95a212b89b53c48a21b9711f69d30b721a704d30a0f53e87671595c. 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/ES6671401787.
En la Barra de un Bar (feat. María Jiménez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd317dad2b6d73377be6282a9ebc213cd9ba062f5870c30129cd1f1a51b365244. 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/ES6671201568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ac89d612f620dfa75e8b9f50288b49c511a3629cba59bbee51398d178ba8d. 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/ES6671201566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476aac64c34278153f2b5651650a23b242d203ff0f29e8f6145dac91341c08ce. 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/ES6671101170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc277bc457313c8b5186b499a7b7425b1621739e5471b8a70a993cf4ec95f5d. 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/ES6671101161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353fb04d67b72c75635e9c50eff9b0433114935dfa7ed725830c9d2b31421e4c. 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/ES6670901229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92260ec24f6c7605b4dce406b8374c0863a3f721472292959006ff91e799891. 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/ES6670801259.
Dios Te Salve María (Salve Rociera del Olé Olé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e940be904c11d10d76a8b824b21ed6554578b2915d2869ed40b5398ee1678a3. 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/QMDA71439420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a83429d84fa033c5f37a5f81552da0407d45f1c3fc3bded6b56a98495b0e95. 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/ES7580501741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1898d4612a2c1550e28d00c903b79d972eeb4230fb2d68fbf7991cbd7c72aef1. 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/ES7580501748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f375ad91c53e7d10753df6e92c8b52df6f987dcce2572c23aa129ccee432138. 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/ES7580501750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ac89d612f620dfa75e8b9f50288b49c511a3629cba59bbee51398d178ba8d. 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/ES6671201566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd317dad2b6d73377be6282a9ebc213cd9ba062f5870c30129cd1f1a51b365244. 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/ES6671201568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a00c6ec8376ce60e2728eb5d1d101d10748800ca4b39b0aaba5a25ccb7b4503. 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/ES5301251746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476aac64c34278153f2b5651650a23b242d203ff0f29e8f6145dac91341c08ce. 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/ES6671101170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b58ccb98a63b56bfb18248ff79394a975b14d9830e88a79781e3f8f935ebcc8. 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/ES6670601214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd62cd6e9fede3a007b544f4ff97a7b0ef0cd56561c9816bc319caf810750e90. 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/ES6671001189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f1faf2afaebaab138f2cf2bd30c83e5861bb4eb41d9905be7b3c407b23ef74. 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/ES5301150374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2141db46c5236c55fcee74ed8373f96819b64c3570dec81dbf65e89656292965. 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/ES5301458883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289911a4dfca2428aa94fb573328b7e89b26d029af486f3dfe50721474f494e0. 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/ES5301252190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea41b4f53cde5bea423077c0de138def0ce22723a350a9e63513db71bb4c828. 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/ES5161303736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e14cda3397ee3e8610c3f90f39bfa286b7c3e7ba9699058779fcf7f0a1baa7. 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/ES5161201784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ca55ad2b0c6d097f7445ef1fdc944cb3cb02b3a1dd1a85f52931a845902c92. 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/ES5161303739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46798e1a5be3c7fde951049de5c2fe4b0bc85a37e1da1219571ce2ea9f41d712. 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/ES5161303740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd6d60a6e567f6a8982999727afa98c20e6319fa609f62314017b872f68909f. 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/ES5160600408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a97e254cfbca3ddea0f42b6e8bca90db17166b245193770042eca8de756f1b4. 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/ES5161303742.
La Morena de Mi Barrio (feat. Sonsonete, Requiebros, Las Grecas y Rumba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065a7d062d642a2f66bbafac75db228f68970fc50e8d939df1b466ffb7c4752f. 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/ES01G1201560.