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 0x48b1ac3351e2ad3a4604602a5684b8b53c4f6bc4151aab4ccd418e633ce5b8dc. 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/eccd2fe6-6957-470d-82cc-e6af935531e9.json and https://artists.proofprofile.net/proofs/artist/eccd2fe6-6957-470d-82cc-e6af935531e9.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 0x89f500192af835cc5a67eb0edc93ba332caf30e375a72fd2eb56ac3b7fdcc75f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/MX2831802167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe317f614827123288aca0c76a836a9d81174eec7d30c49d31736ba7fbd0e2b32. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/MX2831802168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc04700438961a710d081a40f763c92a5c89673221db19690af0777b603d0930. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:36:52Z), 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/MX2831802172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae265fa4fb93ee19774eed0a0105839f4b6bd5a19419ba90193b6cdd968c6ba. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/MX2831802202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0851303c7db288e3de2b775cffc503c1fede6a75e6262f45c6c382213c5e142d. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/MX2831802243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1507ba17d067ae7d7f444b65ffe70e2f92d698243998b0307af73b598c76bcb4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:55:19Z), 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/MX2831802249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d3185f196b22c734b5c338158abe173eee8fa023822012988452b32ab16b09. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDQH2359457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cee776fe19508684f07f3d0d3fba9ef967fe5302920f56d7fdbf30e1a167ea8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZDQH2382351.
Popurri de Cumbias Alameda: La Negra Merecumbe / Muevelo / Ven y baila
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f07128c2c2350382ad6a892f7bf46d49e81300fe35503e44fb90659e3c1e68. 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/QZDQH2382356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f2de8387c7220a5fbf955a0c25c289aa81b018d303fdb387668b3514a858d4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZDQH2394673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75f3f6bf6d1cf7ec742ac3ddcd48f4d2bc9c50b9fef4df22237a85a0c96fdcb. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZDQH2420863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eb89428655354b75a4ab977e7b08cc967e0e8df6ea58ffb9e2e88db71f28a7. 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/QZDQH2434808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a099682bf95767a3f3c8633b634d7b089f9f16f5f8e43ff765e923647403fbf. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:23:08Z), 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/QZDQH2538760.