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 0x7486c237be80c1596577cc6802160b6ec0251227b303d666b8166a4c405dcc86. 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/58501551-2a7d-4fe8-a034-917194a83377.json and https://artists.proofprofile.net/proofs/artist/58501551-2a7d-4fe8-a034-917194a83377.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 0x848e1f82f6a95f821021a3d1d4e1be3ddd3bb91a9c878d90a94c785da3433b06. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:17Z), 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/QZ93L2015508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fea2ad52f56677a0e8ca366eafdfa8bae10b4906631527bd374a20eaabc1f9c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:28Z), 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/QZ93L2018040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d02c40cc7b96011bdda69aa3efab9d18454fc1a971e9f75026ce0a00025f42. 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/QZ93L2023587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb5acf242a13d4ed0c30078c80213bece1684143a290dd639c3211670079264. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZ93L2035854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbc1d990309352f100090eb2812b2c5263a5f2c00a8ea6801aad2988ab481f2. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TWCR72000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4b6b412adbd4089e5c30fd7acc34598b0dd9ea2228200f5bae8c31babcd5ea. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TWCR72000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30dc3cedadb9bdf592570594bb71c97ecf6379e64d7f2e70e5205428289b973. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:40Z), 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/QZMHK2093698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0effd176a2ee7484e1339f2b95aa16fa0e08e2f54a63466fcbe77f2b9ed0af37. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:29Z), 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/QZMHM2022232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9676bd73080ec8b65af64204a8cb227e5775a87835543e6dd12e07b900da58d3. 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/TWCR72100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59ebeac0c4c8cc96ca77b90dbe1bb8ce5896d60fc7a11cc33cb46dd9f7f5cf5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZMHN2246066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814b5f918dc23db11886077c61185e400d464f465315e6d5022f4eff0a16a13. 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/TWCR72230003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d291cb185493bfe7776113d93a1dbc3331b46873e430ff554497f8f1d4190c4. 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/TWCR72230004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d291cb185493bfe7776113d93a1dbc3331b46873e430ff554497f8f1d4190c4. 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/TWCR72230004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bf4d36fb52742437249e56942b1d86639cd8014e3b07e91892fda9467992da. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/QZMHM2412845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e4aa6856a67491f011b7d37dcb356fc89bf6e331fb657f0bcf5c5fa02d6815. 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/QZS662424979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b08a16ff464fe026551e65e0844940a477fe57661300dec37cf9d5b9da356e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM42K2434223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175664c62755e71f5d75cbc5bfa0497e897c358a47912c4c2d707770b41756ba. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS672487750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47946e1a09ac3d8605ad9530b181c1f1969828337065e920ccc40f12c8ed2da. 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/QZMHP2447192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a87f845de0aec87269fa710b8fa4bfe7875a80f83af060bbdd58654d1f8613. 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/TWFF32100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a87f845de0aec87269fa710b8fa4bfe7875a80f83af060bbdd58654d1f8613. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWFF32100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814b5f918dc23db11886077c61185e400d464f465315e6d5022f4eff0a16a13. 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/TWCR72230003.