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 0xc7b33740ccf2ee1af1cc310d2806fdac797459db4c4a55feb3facb629e89ab02. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b16c91d6-6cdf-47ca-92ec-acb226fe63a1.json and https://artists.proofprofile.net/proofs/artist/b16c91d6-6cdf-47ca-92ec-acb226fe63a1.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 0x86ab69994b12bf71b8fc3ceaca3176bfc0678bb5813ae779419a6e4e48bac4ff. 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/QZFZ32542506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fb83984e5a67a21e4e28bee3befb1e0a32f92d8e3697698bf84f37be9ef60d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ42507708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1d330520f4cbac5f80871410624517d43288174614d2bdb21d00757e9a438f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:33:30Z), 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/QZES52546118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40f3245a2da59017d654e28501e35c9a338b7ba02c2a75c1828fa8f08fe555b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES52546119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6b2e2d93268af91a347495acdf252bf93210a31f0a3d3be0135d679c7c66de. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES52546120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5ab7824ca18b8702d4b47c3e0876719e9a0853c76cc062f333abef4315d0db. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZES52546121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb7252b76ccdb666ec7a57791728e9243e2118250dbf3f41c0d5944c8299895. 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/QZES52546123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfba6dfb242e153d12636bc3802eb05aba7cf7979bbc3ef684e63a3178e69a42. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:17:27Z), 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/QZES52546124.
Arriando la mula, Donde estan las mujeres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3439065da2f7142cdd430b3151980c42b393cca232c829ab03d98879032a55. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZES52546128.
Se Perdió la Cadenita / Ojitos Mentirosos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f06501ae068019fee7cb6b4d8e1dbe42999922814292a65b2140d5a1d9d650. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:49:59Z), 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/QZNJV2526671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02becdb00ab1d0f1412672ca523daf49d2811bd15b2cc0cf651290fc474bb657. 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/QZNJV2526672.
Macorina / Qué Culpa Tiene la Estaca / La Vaca Loca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4906f568f07b39e6f0c82a9bb0034193fe3124d3bf2d819fc20281b3028ec32. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:47:48Z), 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/QZNJV2526673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe192f11237ec9a07b029cd572cd8b05f5594c5734d0192c72daea218cc6ea28e. 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/QZNJV2508044.
Charanga, pachanga, Echa pa ka - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6da635b06858919762f161ecfa608abbe5eb129942e1a85990d09c6b89abae5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:18Z), 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/QZNWW2570347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479f731ed113baa2e6ba9c5fb4be44766ab86e3bb47c9d859efaa2ddc644802e. 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/QZNJV2579636.
Tributo a los Mier (Te amo, Notas de sociedad, La coloreteada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9091e8a5c5637b619a426a8462e9c54903e8b3ba3e962043555788dca3f3e016. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7N2572031.
Cielito Lindo, Mariachi loco, Viva Mexico