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 0xf8433ff4ca023c378432bcef220805982d04d534d2f82c3037f228629cb46b4b. 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/6b7fa85c-7d97-4e56-bdec-9391f2ac2b72.json and https://artists.proofprofile.net/proofs/artist/6b7fa85c-7d97-4e56-bdec-9391f2ac2b72.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 0x32cad8bf116a54824617db5a431bbc39c6968bb4ab48c1b62d7253c59924bc9a. 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/FRX202457615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3803d4dc2574dffbacc02bdfedf097d3cafd55db4e05966ae619ee91848e6a50. 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/FRX202457620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecebd92d85140937992b0c47879c4afab43bd901e123cafbc10a6e50229ca553. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FRX202457621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7132d138517ddfbcd6084447af10c021ba63a4259618a4aeaae9faa232e552. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USJ3V1078571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c50306bbfa1f1ed90c3c59fdf36fd03d8dc949fd9b019a89dacdf7ca5bc9f3c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:55Z), 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/USJ3V1078572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4a1e4a8633d59875473b7963839a85895d4a154b7976231b401586033b152a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USJ3V1078580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c5bd0eff3628d6157d1fb811e81249a1d0b5b17a10284c0524d336db60f60. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USJ3V1078581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5469801e2356772478997102b2943c3c913dac2e9f9b7f76f31679940c497c2. 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/USDY42183719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8273ad527817956abf1b1357e05f597ec5ed60bfc6f47c200bab78d95b26f31. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USDY42183720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd712df7d222ed7ce18b4af02f73490d20ec467d2d358e54fc75d3c3d73be4346. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USDY42183721.
Popurri de Boleros No. 2 Recuerdos del Ayer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa571cb90cfb3c9db332fc4a98a3d569e3931dd4ba4e0e0d0a7c360f0a2bc95e7. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/USDY42183725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd01680d036cd670178b54a8ad27a91e3fcf84ec48a624ed45da95e05014b75. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:44Z), 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/USDY42183733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae588d707606ba166bd57bdf7d79b20d2db49974ad4abadcfd5bcade364d9dd8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZDQH2149964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9afe0dfa42028df40fda07a3b3cc3e7c58566e23fee85b8d6b6b1681976d9e2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDQH2149965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef016f05386c399bfa66cf022b12daea5db195aaded3ea3ef2454328f851d692. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDQH2149967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf42396595a6efa1204b7f42e9921f0211e6809d99d4d492481a2832618f26d8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:13Z), 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/QZDQH2149968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93484de0a70dc6f7b6645c216983dd6d1d38b56c1bc20b12d1cedea8d030c900. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZDQH2149969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446e31d6a1564978d1d48fc6ff77868575b29b3015b2de9375079bc6e7e5343e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZDQH2149974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6952c663e5d9c34e0c671d9721460cd7a6dd013df8e13024c2a2ba2205330a. 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/QZDQH2162594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491bdb00424c27a1795fd4ffcfc75d567898169dfd2a347e703a42779124ba49. 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/QZDQH2162597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c71b949a32eaf3c1219f3e9ad8111d6badfcfdc10423ca3bd83114fe3ddd369. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDQH2365140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524610875d71d71271e79b3664475091bce3af583dbbbd752c78882c3f0b23e3. 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/USJ3V2361257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9213d636c727ac4e618e5cac8c8d2d310f57c13910e7ede5eb51147a452bd064. 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/USJ3V2361259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42d3868f5d16ab7bbb68ac264ec9621ae881cb5979711c9a465507546b099c7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USJ3V2361260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe718ad22c6a13fa8474fa47cf1c9cd54b82128ee88ac3a6378290f640ed470a. 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/USJ3V2361263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb557688fb4e4c9c9a9f512a9d9a33e8c7c7729bbdb4b78ecea638194568644a6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USJ3V2361264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03f7e82b0b384e0b17bb35745ee40bed1fe1c9a4a46afa54102e73f11b4de1a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USJ3V2362638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202aa9911b5e5ae87e38c95a1acd45fe00e6120f5671c99254321c7075690fba. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDQH2439274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d6d97c8fd83e9d7a341a2ed7c05c921dd0c53f717d7961469ee310c057423c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:51Z), 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/USHM82557785.