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 0x8f79ce3ceacb28b498f0775451fdc68059b385f7d5aecd0501d8e12d656f9a45. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c247cc98-e1b1-46b7-907f-b307a43fc16d.json and https://artists.proofprofile.net/proofs/artist/c247cc98-e1b1-46b7-907f-b307a43fc16d.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 0x3debec348469a7b2e11505d6e8360236c6aef71109015c9bb22a196b31288c23. 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/GBMJG1609743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc276fc6c195963000101380349489766dbf3876d9984b6cd59319354b68e5c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBMJG1609745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ada61af38e2d969e1ca30e968549f0fe97f76f51a637a6b904fe4c544cd1fa4. 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/GBMJG1609751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50ddc7d250dc80f4469a1d86582347bc425dc5a71dd0d9c52c177960f57e6f3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBMJG1609752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4067b96ba6c46608a14a40f0931acc2019e8a441a848d3bd0c0634e89ad5f72f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBMJG1609753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d67a9b841c8fc059075381dd7db8a3d5942c317b5c81af00c3272dda523f153. 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/GBMJG1609744.
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 0xdd45783f98b01a9fd02919133926a8e66fe8f49df62245744366630a0a21d1b0. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBMJG1609746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe132eec39ceb6c8352f53640e63b2c14dc58f9c900740ef3bd475ffa1d073514. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBMJG1609747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161ede846e8aaa9151f8d0710f4c5e91f47ad990b9e482b61ec40f9b0b213ba0. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBMJG1609748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23519a3355475718cafc76c08d3dc6bb53da45f3d653b0cec802f89b02725d28. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBMJG1609749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde9a47dda637b21470a77625cbf34ede11b163246a50466d53dd781127e15ec. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBMJG1609750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd199f4e7dc773ba0fcd864b548623020e6c9fb57b76052ff1d5f5067df77730. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBMJG1609754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709f48cdf10fefac0288179bab5d40f48503d566efdec3891157d82a5ae0629c. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBMJG1609755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9318c17d4228ed0513e6859e9c0063dae1a232ad166e440098cac921a66cbe7b. 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/GBMJG1923488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a99e6cda4ee03064963aabe77e30514ddb83e625ba0c832b62ee38f91c6cd89. 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/GBMJG1923493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f9a6fc5e2821392cedfbf7555c68653746e9320c365eef93a1bba6bacd2fad. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBMJG1923489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cf75b8af06ada6feb90ba2936c792ae50198b40850728601359d6add630de0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBMJG1923490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6d14bea296287e5bb99068fcaa980432cf31270d0417aad61793ed91fb0b40. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBMJG1923491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb70216179308e000479ee2578472a0c43cf0a46d59581e7d97df259237497c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBMJG1923492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a50bb42a63c0ee41764757e86533b4bfce0d2c00ba7e7daebf840f390d0868. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBMJG1923494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72ac2d64f537eccb790e928d0fbc50dd378ff1b4aff4ef1bf78d76a4204fc09. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBMJG1923495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927fa7a289708b87a1ace914fa2a30c7dbb0f729f876f2e7700a916aa80bd793. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBMJG1923496.