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 0x0dc0b7d2ff5d8a4bbc047c23c5a007fa3a5e43a6039f777cadec537595734761. 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/49b03b43-d733-49b9-9ac8-93a70da17f63.json and https://artists.proofprofile.net/proofs/artist/49b03b43-d733-49b9-9ac8-93a70da17f63.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 0x821f9523c52514e3845457bb0221cb790b89bf680dc6aa3d43eb682fc783aaaf. 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/BRUSA0600677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1dd65365fc598430668a1cb74654857ceb42fce1678a033c6c7286c48bbdbe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRUSA0600679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c68c729a92370ec9e2af8ebe82b5a49a8e7298eb5bf74cf4c87e74cc9bbf029. 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/BRUSA0600681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03ac924f52dd017c77607e76e0f1a149b9a629bd930dac4123e000c5eaf0e93. 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/BRUSA0600683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6f02eabedafa15f40f8919d77fd09f737296836f469038673bbed8e10a41c1. 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/BRUSA0600684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff5aa659e8ff337a342d2f9f4d365d57681eefa97abfc2ad944f5d14922e805. 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/BRUSA0600685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1096d532ced826a82bff63975d7d3f005f7805a7c8df6c42aca8588aac6b560. 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/BRUSA0600686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6849b26a6ede278322a83f0f3335a589b760d5326ef94d57739b1e43f3e1cdb3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRUSA0600678.
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 0xc16d0b5058e04cc8d4d6ef8a90d325451f8855b4d1a0bfd1009dd77b3c21acb1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRUSA0600680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4616e6eb81fcce5c6f98a370c1971e232321c41461d7fcf24ee109c17600e83f. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BRUSA0600682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5473aff62b484389c1cd3f8caeb4419d605f8cdf0dee2b85678bdd06b074d4d3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BRUSA0600687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa292abda8965bfb2d2eb226913c4c847d9752a287a75e8149c8160b9e7dcf2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRUSA0600688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9d02020d34f171bd43c0bc2fd7f6a76feda61199add8edea5c34ece96cba8b. 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/BRUSA0500699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7002272b41d21b40ce357c60da4ae0e0f4e44a0dd81301660186cfe9194434. 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/BRUSA0500700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1fbc6139781a2d89f18194408dbba6e5b2c1cf2cc496d9e6e08bffe0f8d909. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRUSA0500702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a10a1d2721ed569d89e012bda46b4b340c62ac682fe47679f02d66f0654399. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRUSA0500704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59abc098f7cf541722936554c2ad04fbd668d310f97d2449fb40c2956ee65c6. 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/BRUSA0500707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f757e6fef0d3410a06e8ee872ea8eef99142b63cb36178cb55752deae264450. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BRUSA0500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2f25b598d1ac3753fb700d9f848e9760bbe6088141d86adcd0bf1d454ecba8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BRUSA0500703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fa1f6b0a4b37f99e41846014c19e2a8973f6f7322a4a574d98a24a2076cb1c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRUSA0500711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53e8b0966a1415558ea0070de6776e8f0f2755dfb4b0deed36175ece0629f38. 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/BRUSA0800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae20c37fdcc1944bd55df8254a993dc70d054a436f83f76facaf9a5c17f9d5db. 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/BRUSA0800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bfb6f8ef9e4920249f963267ab2453b9322558ddec2e4f05de1db3a6e2c028. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUSA0800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96f157ef27d14f9968c400714780882ec7fd13046f81ae93d0fca698df3f754. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRUSA0800128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c76f9a18c70b36e4fd767a11831404400b42ef2c185516cc9deed753c0da7f. 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/BRUSA0800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec8dc966663a4697dbc2d4b162f7cdee1262136c0572e0030dde9cedf27536b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRUSA0800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f34b73264268dfd2e64eaa7dbed34ae9fda020c37639da161df1ea1a5f14de. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRUSA0800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420db13382854e266d5bba298cee8ea7b44e28d254f2fd017bbb14c206120f7e. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BRUSA0800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66855d2ca3ad583922689810fe8fd14ad1d0ce6fc42faef32f3b8ed9abe62b8c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/BRUSA0800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28acb2238be18b15b1d685493400e582953fa9adf81d3c17efc7d77856bdcef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRC4M0500846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da8ab4d3b059f7aa0671f4f5e81340ee3586025cf78add5ca12362bda8e771d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRC4M0500849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922369026c9cdbbe02f36d346db11273545bcbd9a104130080db51e325881eda. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRC4M0500848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8047cb3b875eeca4d32fb0adc3962f9e048e5de39ad4665598c9412491bd563. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRC4M0500851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7f4f45ce3ba8a34370638842461b1d4179e2d0dc4147ed6951eb1c6f55f7d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRC4M0500859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c58d80c7b60ce0ecc2440fc655c563408cad88c5d6675b2528acb99377c9a9. 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/BXV961900031.