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 0x2bcbb6f5078a0a49d79fd70f447a699a684fc50f678f908035879f16347dacba. 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/ccd5f8c3-9f12-4a4c-ad98-14a221a6b3d5.json and https://artists.proofprofile.net/proofs/artist/ccd5f8c3-9f12-4a4c-ad98-14a221a6b3d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tropitango Noche Colombia #1 - Enganchado
Tropitango Noche Colombiana #2 Enganchado
Tropitango Noche Colombiana #3 Enganchado
Tropitango Noche Colombiana #4 Enganchado
Tropitango Noche Colombiana #5 Enganchado
Tropitango Noche Colombiana #6 Enganchado
Tropitango Noche Colombiana #7 Enganchado
Tropitango Noche Colombiana #8 Enganchado
Tropitango Noche Colombiana #9 Enganchado
Tropitango Noche Colombiana #10 Enganchado
Tropitango Noche Colombiana #11 Enganchado
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 0xb8640b76d0023a820f3488241b0b0584d56ea622bed571fe17c82894bb10fe3f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZGLS2313842.
Tropitango Noche Colombiana #12 Enganchado
Tropitango Noche Colombiana #13 Enganchado
Tropitango Noche Colombiana #14 Enganchado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1cf972196b8c23bc6f063f8c2bdcb7fe9669897775edf6c19f14c7c4f3f5bb. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:16Z), 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/QZGLS2313665.
Tropitango Noche Colombiana #15 Enganchado
Tropitango Noche Colombiana #16 Enganchado
Tropitango Noche Colombiana #17 Enganchado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c48df000f681970e670821181c5eeca9e51d1bf18ba2bda631b0d0ac29ac9. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:24Z), 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/QZGLS2369689.
Tropitango Noche Colombiana #19 Enganchado
Tropitango Noche Colombiana #18 Enganchado
Tropitango Noche Colombiana #20 Enganchado
Tropitango Noche Colombiana #21 Enganchado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde19026ff6cd0b9d1f7bd2473e8d22eeb2cc535456fa8fd690d18cdbbec9b2f. 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/QZMZ92376265.
Tropitango Noche Colombiana #22 Enganchado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad346ba2fe5b3e6fc299444beff9a41966253ab8d97a076352af19f2fa80a15b. 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/QZNJV2314677.
Tropitango Noche Colombiana #23 Enganchado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a71ecf6e625eb2b6df560f9a765998a8e11de3f63e5881c326a7290de5745c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTVM2425413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59ed8e84a16bc565045381d24c871bdbcbb9376c3baf7b32a79a89c5f98b256. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTVM2425416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a24c05a66bfdc3f8280e0aa3f124cf38d761fac364cd76c4915952ae8df735c. 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/QZTVM2436874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c724687b1fa1a287defe0cc4a62b5257175773e94ffb454478ca9a5f807747a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:31Z), 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/QZTVM2449829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeb17e8088078ebc730ec18be9a35099cb334d3cce6cc764f4a3f344210c2b3. 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/QZW9K2495734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa10a8b6d6836319f926082c9188381718d1ad5aa8141968b52a2c79aebb2b. 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/QZW9L2422588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee10d92720e191dc8580ee69ee54925de4bf5d13580a985d38f729156907e509. 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/QZW9L2473353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d020ba5dbd6a073d75a5a66988956a43fea7987e0264ebe2d79d44bbc08423. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJW2530436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c2e1823556a9e45ba645ba11c1ff9ac01ae96be5d58d5488e39e1c9e0b1568. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNJW2547011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0eea4887acf917efaa50d70f34f83e19a03c322e7405f0ce087899fd9ff086. 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/QZNJW2573472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a38c26725623d8d9a66b514ea1c25e3edc3bd83452bac2793c31799958ed8b. 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/QZNJX2524089.