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 0x382bb9e0094906623a28abff0f08b43b43ddfbb83446882267f190ea8222b4f5. 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/f4106179-dc11-4632-97dc-9beb9cfb7508.json and https://artists.proofprofile.net/proofs/artist/f4106179-dc11-4632-97dc-9beb9cfb7508.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 0x0993b03ef76dd558169ccfee8ec7765ddf81a257961aca9857522384116cb99e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/UKFGV1900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacddcbc07aa0601eb93d41c1a984f09ff0050e2b72c97e8c9795a656ac4ec689. 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/GBGLW2400689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa567e9eb881f6c22d1a9278ee7ad59d8b889e4d94f6a581c939bc05838c7a7e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:56Z), 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/GBGLW2400855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacddcbc07aa0601eb93d41c1a984f09ff0050e2b72c97e8c9795a656ac4ec689. 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/GBGLW2400689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6f929133a31126ea5cd15f89c0921dba5940e640c516058f24a8d29ff5a3a5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBGLW2400859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916c6f169ad0ad5e44ae38ae0d0544c6ee4c557b021cbc85180293f1c327120. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBGLW2400856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb524f51daa4d42fc8d2d45aacf8a3e8ff1a28805a41c255613014c5fab99fe49. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:06Z), 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/SE6HN2306232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3645f66f72af4bcac038e39f1d2cbd121156e5142ceeda436fa032882c831410. 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/GBGLW2400862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efe9ca281a9d1b06fb491644502204cd055c95b407cd43a2cedf980881d991f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:05Z), 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/GBGLW2400860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe153f34c7137f1c5603751db3a41195994c293de6e3d0df1533d81fd95999739. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBGLW2400857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72079241d6aff9fcb4a5a2f95042fd9a8de220f9f60735862680a1a02b39ec27. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBGLW2400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8c3ab530e0f1b4798562a18806ef715ab3c202da18fc0db3b85cda81b40568. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBGLW2400566.