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 0x1c36648368a40a3d9ff8cf2c215b1c96936c4f576a28e2b09974d0460c4ea342. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dd13717-00a1-4536-a997-8904c4997bac.json and https://artists.proofprofile.net/proofs/artist/8dd13717-00a1-4536-a997-8904c4997bac.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 0xf74a486d439d255f350be8684feda35136be3b682488ec95ccbaf9fd4ccc95c8. 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/BCESS2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa8873807ef1a385a0b69542df352b5a60528bed92320eda05118fce4e97803. 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/BCESS2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb045a400ada25eb9b79dd81cc49fa69684b281a26b178931787e3465ff99d3e5. 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/BCESS2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31c1b058aa59ce944f123ec3ffd6a456d9b6070e0151765b772081a7f6561b1. 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/BCESS2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6a0fd919bb43d53f64492b8e4cc8ae13395ccb232996a4e69c28e3799e2c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCESS2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939daa811dd8fad0357655b25f01c89344b4915bed60f0c16a8679b937cd9e2e. 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/BCESS2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd923f0e079c5edbe462a531492ac005d5c30bf8bb1ae8d0887d085df0ae24e30. 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/BCESS2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab51482430ebd88a619edd5b27da6e2dbc99788b3bbcf5a403b25c73fef1b8d. 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/BCESS2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b438e48098f9b88143c9ff2eb70011d65a947b23d3d471d81a9df6ecddd6574. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXXBB2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db76e3501116f96c5df6e00396375aa46fe423a411847e220688a6a2e5f21ad. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BXXBB2200005.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a2d2c64606de7752661a44fe1edccc1034ff5a2540ff2e7c8ae5599c90f810. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BXXBB2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60a8246db0ef770bb64a29d2f0c3519336e7369018c3948f1b92b3222604bbe. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BXXBB2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca2462396c5f68fe89dcd57c434a9de5447971abd42c55b4c794de59d3a5b5e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX5W22300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a64e1778ad9745b1b2f6e2c3e278d0a8fc997136a012010787e4092cfed69. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX5W22300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147ac8f8d0f7490e955ec7591e0340636ad35678e00322ae57b4096f5c2a3f9b. 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/BX5W22300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512a7c6e3f0c2b88db1730d4fb30dfdd4b9b716877b9b76083561b5d1970618d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX5W22300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd284d93b7295e38ba7a83a92c74e29a7b667a2f1d4b7291efcdafeeee171e737. 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/BX5W22300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1a50b216ce1db2cdf602da7da61f77d17aa46523f0b8daf2b7b17a25f80105. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:21:38Z), 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/BX5W22300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d9b0dd10e9d62cfc7ed4b40af6c52604df842d35b4d2135573d7e200968a7a. 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/BX5W22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc0194d6a777a4e64bb30d2f3da5f9c1f58cc297ab411cbe59b7e2be8196fd5. 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/BX5W22300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56356268b389bb4943413c46445b6fc234f57b3ee977a42fa8451bc36ba13fd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX5W22300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3455a37032ddd24c7714b0fe3cc662a872abfc4a5c2d88d6223495fa203d9d9. 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/BX5W22300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbd92d193e973a19db53764e3cf9560120bd475de1b6153eeb2217a621bd88b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX5W22300006.
Conectadas Pela Música: Pra Espantar a Dor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0fadd489ebc8adb7b1868b4afaccd67b73188debb80305680e733d5b57643d. 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/BRTRB1985900.