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 0x0cb129c894542151a51d5826955dcfe6f60d63d2a04e854547e49ccc260a4d25. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46242fd6-6272-43ac-a025-6fc3bc8879dc.json and https://artists.proofprofile.net/proofs/artist/46242fd6-6272-43ac-a025-6fc3bc8879dc.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 0x65b7bfd5fe00887ac37d06c30e6a7099abd816e4f0fcbaa1b7077366baa1b576. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA1H2221580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da7c73a665180deeec28162a52314ecd933abc3ccbacf91455e8fa404a4bcab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA1H2221581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de8ede8d2ff60da4dc68a20f8012d3ab3ffabdfb9660ae0060e4ca4883c0f51. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:07:49Z), 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/RUA1H2221583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf720fbd866f9f334e37f514db0cd601c19a67e289ec865904a64bffd4d153d23. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:49Z), 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/UKEX32205715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03953debca9056c210ff05f9db33b7c06604869ed6609065151ff244f387862. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFME2258199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648f908b3866cbfb956a3f0fd16b7dc0e69dc762e7f02c4a976d0d575a9a6368. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2225798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39e8955161fd26c1a26dee69d3cbf3fae3bf594be7be2a8558f37805f5b83c2. 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/QMFME2229164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a79a1e1b5e819152fa5b54b77df17d26815a4284118c00e2040c8c06d61a5bf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW2346642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75059239d1191a897f44a0f6c27404282c73284d3b5215d8a60dfdb196e8d8e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM4TX2389801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea3ddf5ef3a398f634e338e80493decc6dccdaf70690946b5d6033e9bf8118f. 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/RUA1D2349403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5dc97399fed17d184f282ee0ad50a599957185b3659bc80e6f3581b3948361. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6N22333389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171f21abcdf131633de01aadbb241d7099f06f508ef3168ee2be0a53a7bb53f0. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QMFME2351998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6415030f265738f15c709dc9cd051adf6d8b552b8bbc5f17a8c7f7053e72d4e4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUAGT2340910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcf642988b61e7d6ca9ae4d742b8ad549362e3f758e9e694d045410ebaaa5cf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMFMF2314076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a76d66b9bf3dd47b56774ab54d953e4f8ddda9cf318a11e2529036e604a191a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUAGT2372945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ad7cd2c85217e7765bf5fe4a9f5d6741a3a428ad3d1030613f0ed416c1aa6. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM4TW2418215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e8f7697ce7018f58d3d485f791549a3f79ef9e7c503972828bf6180d1d68a6. 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/RUA1D2410755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a9fdb154af1d94f90f48c384d62b44e558783d3e59c9c17b346d6ff393f7a0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/RUA1D2412859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3849706fcfa31a54e232991f64d35aadcff7da066d763cc44c4f80c8cd096c3. 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/RUA1D2421720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e453ff0dcffb8cc28790c0fdc25a6878d402347b3e153656ea8e0876ffb3a4a. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/RUAGT2449105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60c179200095443c11a3636ce7b3c178416d392dcd57a45b18807c3558b98e6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMDA72402238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a1f13c46f92e6719f2a5aa094c29cba0c911524f3c0a52d8da162d34fc3986. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFME2478918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc6ce2475c6b2f856299e87f3df61720ec78f9e8546c0d726a2c15974ae10bf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:08Z), 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/RUA1D2544237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1741886bbbf81ef351b76118f5c4d2d1c065056df1f59279827ef3cfac70134a. 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/FRX762536409.