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 0xbb3e993c72554270e765840d5e5662773747e75c6a8879110ad2c7f926cb6438. 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/3a8848cd-b2f4-4851-a02c-f44ccb5f7772.json and https://artists.proofprofile.net/proofs/artist/3a8848cd-b2f4-4851-a02c-f44ccb5f7772.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 0x2767a3bc1d22a8df627ab368d9c11df3eae63ceab64aed2b9f1d82cf1575020c. 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/IDAA20500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f96452ea63c9e8beaa836d768f23f49d225cef93eb4c7284558a0e8c935e9a4. 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/IDAA20500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e36011e41db386466f968c7191846a574649dbb3aac6668be2d74dde8216065. 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/IDAA20500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c8c0ce34f74a37cc001e3f1247ea9470c61f939cfeaf488fa22d0dfdd066f0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDAA20500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbb2c1bbb20ac7d0cad571b0555169045d1722c6f3cd0241c141368f98dd299. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:46Z), 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/IDAA20500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6149d2ba4d1d744521306bf3ea788e21ca751f9164fa33115929f8f14af08f8. 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/IDAA20500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435172753551cf4ec0d46f7c84e3695bc01ff2874df231facc935cc688006deb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:53:12Z), 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/IDAA20500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cffa649c02f0db10225d929514fec81c39086c42a5f059d6c8a800f6f2f556. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/IDAA20500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530d0be7d2b0a8a0338b935d220ccf5fcb4a0bf0c6561fb89dc04368613fd5ea. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:56Z), 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/IDAA20600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689f116f6a9438bf2c75d63bc1a0cb076795eec80cfc9dff898f7e41dd90e2d6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDAA20600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5746b2eb79e73a462191258ff7cf9c500bbe6dacb55111b5ceae771baebf0e11. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDAA20600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b075a19ca3c59125bf0b26623d4f191398ee0b5f3e035ef584a09e2488888ba. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:07Z), 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/IDAA20701583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fe37343ca20aa5b31af5d0ac66706b3b65d6651da8542ea17a13bf360cf6ca. 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/IDA161100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a315a583a0f0081247e2fa6ba42973435183058eb3a9ee7300c5ce8ae2d1c8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/IDA161100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85160632960b820b369ff1c78c4aeb1b76f38c27bd03bd5d439bda7ebe6ce4b3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IDA161100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dcd0090f70777ba1eb6298a610f30159856354f49f865f9c1735323c15e993. 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/IDA161100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf272302a6d5c32b5097c2eccfdc424388a8c7103e7c2cc3177edb109efeb10b. 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/IDA161100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7e69f0ab1f496b1f941d2c71bd3a1f3ad22949b870918a1440ac2bdb746137. 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/IDA161100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f9eb074dc61fbfdd2575187362086356fcb7fd558db696d694c0cf1f08b87e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/IDA161100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e693d0fc576fbc8c8d2242ec116381fa9bfc26647f9b2ab5467129368c1e15. 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/IDA161100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cb1e1074fda0a4d0106779edf85cf86116046943882e67a170da54112f7849. 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/IDA161100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c0f645fd714f4932474e3abf5a36136e53b1797733c5c78110c9c3b9cd30f1. 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/IDA431503539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d61fc85c208b65e2af01fa02a948db4118b8549e35dbab53c9b662906ed58b. 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/IDA431807369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a82cd7eaedecc3c1782e266ca20a7e23cfd9ce2018a42aefb91625cda9e6d9. 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/IDA431809220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a67edd42c7295627776d8b2838da63d83a1c335d1e62a11b30957f48050e1b. 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/IDA431807387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a07da41332fee6c117248a9ae8e62333e90b5be4a5b8917b352c76b4587ea9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IDA431809219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a10915ec28a5b10bcba1d96e1cd181a235b244bfdf7d4c318e8bb87a10e5ba. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:14Z), 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/IDA432022921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9cb878d633c08fe5739a53d96c954e897f56299caace779fddfd8f0ed9d42c. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/IDA432101731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c475f79784581276139d6840cc72716267465269605b9eb117a4d997f73a4a. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/IDA432300152.