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 0xdcdebcb1677b07be6e88edcd690f8a39e1c36908bc9a5de2d96a61c47376e3a6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c08efa2e-45b4-48f1-9c9a-e42fac981c62.json and https://artists.proofprofile.net/proofs/artist/c08efa2e-45b4-48f1-9c9a-e42fac981c62.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 0xf0689eda0595f7cd0681aceddf3ba424e196ed370b88c7e1c846af7da8cdd9f9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:08:14Z), 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/GBSMU4994175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3169a3810fcac4633ae2e3fbc720def1ae83fa5b50c28fd2db8b105e09618348. 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/QZNJX2359397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0236ae21b317a619ca44852d158ce2c647844eec0efffc61d157269300f31009. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZW9K2392820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7b249e249f14e4b7bfe556c41a74a1543fd8825287cc35ad8bd97ef0c0f85a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:20:08Z), 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/US7VG2402006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f3f0d0ce451315156fb18d9826af55f858c9fdf9f8901c508b94242e290b0b. 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/QZNJV2454399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696d9b3945285d89e15cd671ec0ce2efcec8530f275500518da1821ee05c4531. 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/QZNJX2445657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728632f3a6a9cd2e4a58b9004acf31b0d55ed51b3e6c90ad48dd47fd0381ec3f. 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/BK4DA2447202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe944710b62de4d075c2b64942fd2f8f1a2a897bffaa5a16ea7e14752938a945. 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/BK4DA2456320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdadcd1ba88408b2f7223de13508080e3c542bd088d81e49e71319ece0b75dd. 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/BK4DA2500874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579887c904ab6a62c522c9c4c46fbf36dfede5824817d209da66f5a214dd3e58. 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/BK4DA2508043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e98769873a6bdde6015c4ec6df223e86ba1a2fb60596881900aca1823787691. 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/BK4DA2512300.
Mix Rodrigo (Como le digo / Me extrañarás)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7923299e796b93695f8fab2806da78d67990f01199b29f6b592127fac4832d89. 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/BK4DA2520370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1328a38c1cab161fd335fb8e52d17dec1cd7454917568979d2bb03da73f48d. 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/BK4DA2530735.
Mix TBT #1 (Mi amigo del alma / Como quisiera)
Mix TBT #2 (Ve y Cuéntale / Me Duele el Corazón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ca50aef9664865095bff9267b4c93e5dc247bd34b70ac970e75bb4b09d06b3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:43:58Z), 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/BK4DA2545025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c47dc7c183d38a66926becc18d6fe472f7930db690566fb8834d54b14cba141. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BK4DA2552709.