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 0xccc4695a523278ae2fe26fe5275bec9dcfe04e0650d43168932e2d0f3b2b7df7. 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/e6e31ed9-f40d-45b4-ac3b-fa23c08f1864.json and https://artists.proofprofile.net/proofs/artist/e6e31ed9-f40d-45b4-ac3b-fa23c08f1864.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 0x0c7c23725a3f038326142742ed19ffff145540bda366c32f3d750d5e1c20b427. 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/QMSAV1102041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cf61504235dd29233e3f106b899a32d685e2301f45c08edb41746788f8003c. 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/QMSAV1102088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc48f47f50938b5e72cc56e807af6c650b876472e2781e8f085882b90fa78a00. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMSAV1102176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab10dbf810d691f0922748705a9ea742d8283a563f53be5609f3d946c29f0ae5. 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/QMSAV1102268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cf61504235dd29233e3f106b899a32d685e2301f45c08edb41746788f8003c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMSAV1102088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7c23725a3f038326142742ed19ffff145540bda366c32f3d750d5e1c20b427. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMSAV1102041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc48f47f50938b5e72cc56e807af6c650b876472e2781e8f085882b90fa78a00. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMSAV1102176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b59420bebcd1b5bd7d52d0966ca10d3de6fb6b23e46efbbe7321d765ba56dec. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QMSAV1102557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c813f53e9b008bb92b3676eb62d8db499d08925fdfab2619db489602a0cae75. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMSAV1102558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f69f6817b38f9614312fbd2f2dc288ae9f68cbc0274e5f350cace476a10c167. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QMSAV1102562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0281d0c1b8e72d2a58081fd67927696a2009d36779279e9d01492216f4b72e6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:34:10Z), 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/QMSAV1102563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79f6b1e37c8ae84fdd4808ecf72569d4472b402e7714d824d8d2f4d8b7e4391. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMSAV1102866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dda2e7a7bc58f8257db421dcf805ed4c304807b3b94c35643029b81ec09231b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZQMB2100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f8c51b0fbe2f075ae84488202125c8b9363431560d5953c67b566f861b2968. 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/QZQMB2100353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b538ec754a682ee42ca5134130d9850654cd11d72c368c000c32262f4927395. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZQMB2100557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ac5d08d7641b7bd0dc76a90c409eb8ad383b9bdcb86d1723af15a5e36efe86. 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/QZQMB2100918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761888ebb169afc4d53b230f2e28fd59c63a8f35353c5965669f301890dc01c1. 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/QZQMB2101224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9fb5b10cc504178d1fb0ab78f67e1b609a89968a9d9046c8b33929b45e603. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:56Z), 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/QZQMB2101837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f29ea97ed5dab0e54a6fc486578dd5a8878dd2e430afcf60ef00b934cc72b70. 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/QZQMB2101838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098404548a2837905df4ebaba4ade1d57473fde78c17e5495b782634542f476d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZQMB2101839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff628ba8e3c7d48441d6f23cb862c24bcbcf089d93fae8a437e6f92e2eea0d72. 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/QZQMB2101840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc30ca2e729b917edfff59315794e45ce91a6ba230ed3a868586dea280d5341. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZQMB2101841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b0d22778fb06a8f0201626144dd9c978e6d97f2ee6ea63a5922db624bb0cb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZQMB2101842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cc6626312ad3cd9644d4354a28cf8303b3213999286cab609f44f01baf090b. 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/QZQMB2101843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2518b1bb73e9cef05059a92a7814873c56c6031b2b72a899e593e01944bc8a. 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/USHM92548989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181f52c1df1ef3f58db683eba14bea25c45dd3e9ab6c2c497b6ceddb37edb019. 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/USHM92548993.
Cuatro Copas Bohemia En La Finca Altozano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676c0e2702a46dbb95f91ca124ae5e1d8531d6c59daeed5643d3af233bde2cd1. 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/USUM72222904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512193f37be8e45c29181cddc2e39d7c2116f8b4ec49374f4cb2ce72c060d6f8. 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/USUM72304652.
Cuatro Copas Bohemia En La Finca Altozano (Parte 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676c0e2702a46dbb95f91ca124ae5e1d8531d6c59daeed5643d3af233bde2cd1. 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/USUM72222904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7161bccb34973f119b268be1ddf485f21e050176e5aa2d3e7daf9e88ff653ea1. 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/USUM72216378.