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 0x9f0b0008266a8d0fa6b90b84da37869c93d0339d006e7ea4a824b459c4901ac4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b3c5cc8-19e0-43b5-90b9-2fcd69040272.json and https://artists.proofprofile.net/proofs/artist/8b3c5cc8-19e0-43b5-90b9-2fcd69040272.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las canciones mas típicas de nuestra tierra
Recuerdos de ypacarai - Version guarania
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 0xafba0e6bde427bd81af06f7ec982ba0d271b3760647d487ed47b16abefcd1fa0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES18B1500571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8048b1e495435955c56e34a2d31a9592b57cec485cad58a1ff7a33b35408b48. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:46Z), 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/ES18B1500572.
Bienvenido hermano extranjero - Version guarania
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc73cbdd0ddac1fa413f98315f22ce9878a67cc556af134cce180676f4227a3d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:51Z), 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/ES18B1500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86cacf95de2b8f4354f872d7160cc9e769ea7180c1c1c85fe88b4edd8cda161. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ES18B1500577.
Homenaje a La Selección Paraguaya de Futbol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6802849a88e0d1dd74b87ad5ed1f033b8711d7a6b18bb166c6c6ccd0d398136. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/ES18B1805343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d664db3f085d8d4387da5bfb335326c2eb29b68ae16269a55d7dce9095c7124. 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/ES18B1805344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164a6a184728857f8853b2669a3ee212cb612b2fda3258f55eb7c58a42783ac6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES18B1805311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d92e87b1fa8fcc989fe2cd5196296611dc20b1f56990f51ac723920f5ef2f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES18B1805478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680f6aa2a219423542ff3a79536b01a20550f6a9687f3a957f01b7c993380e78. 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/ES18B1805480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6abe611b00e1d41284fcb0d24222a3c0bc9473edae4a056879560d8da24f6d. 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/ES18B1805483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdcb70fea9c0c71cb643fff4eaf88461df9b2f7b3b7c7f20c553d06e530bdda. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES18B1805450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b94c997f9959c7776d3a5b0a7c215271b53cc4887edbd70d61220d310f3511f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES18B1805451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee22f5e943002d75d015a82c7233c60b75af2b091767cb71b8f2230ed31b0f0f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES18B1805452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84570c78b97b8c8fa2838fc57ba7b502f118c0cb3a210ff2118a301a2a9cb53. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ES18B1805453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f743f40d96b33f4edc8eaddb6f0add95c2e18ac554bcb8cd6db05d3a6a37a26. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:53Z), 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/ES18B1805455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8f1ed572db85c170c93fba12a6f908589f9d07b12418dc533cc06253ba8356. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES18B1805456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee639f74fc90fe1810300789f3672b4f717b5ae06242d51f5937b6104325a852. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES18B1805457.
Los Mejores 25 Éxitos - Emiliano R. Fernandez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ef647822b3896d7e7441c91ed725657aeaf8248e7fc7b41787ad68f567c404. 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/PYA031700079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290b93ffc39f10cb2b2751984a1ea8932a489b10242ee27b123e506a88421040. 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/PYA031700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f24e5322eb9d9a0afd7bb805aef00bf7b066921429527b455b3df4914e01d17. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/PYC842201004.
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 0xb1d779a2df6892b25c1127b4ef4cc84eb55ee35bfbd6d147a01e73a9ca2110ac. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ES18B1805611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f767cfc1e3523c1dae681228df4d12a531d97ce052fd424ec7a2e04ceb36e2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PYA031700222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01764caff29a9c8b4a388dd00010ac6b7226799640660557bdc795ff2d7ca6c1. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/PYA031700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99913657ade7362938b252ba7947b903e944beb8946b768d42aa91e353c0b952. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/PYE762100064.