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 0x4b1be6ff3a71b5cfcc849df97721a69d3b94f33018c3460949fe915c13ff1dc6. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27d65fce-7787-4e86-9c9f-bb07373143fd.json and https://artists.proofprofile.net/proofs/artist/27d65fce-7787-4e86-9c9f-bb07373143fd.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 0xb1cd8b604b2ca1f3f7d3dce15d4a1f2326465619ecdb5ea29aa7db0286df5754. 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/DEZ651704565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bef9b261556bbe7f2a069eb7e9cb798dce3fbe7bb32373bab60d408dd75cd19. 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/DEZ651209958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88046d2bc7674773a08d61a7919640b3b4b9bc5cee8bcc40bc029534ed436b62. 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/DEZ651209959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabc0b24d3e963520de8715e5ebc59969bfd685cf310cd979beea5f48b2791b0. 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/DEZ651209960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe900ca2992b08afa0ff27bee886e62bdd9452819f9a6883ded2320f5a11a0ff3. 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/DEZ651209961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95ff92a970b9f415bd6d53d646ac754c3960c630087dca54c19d8d30d842e9. 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/DEZ651209973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43740c8b2a5047e516ca131529ddd4b07234abdd626a68275d93bbe5f7270165. 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/DEZ651209976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ff6767b84451ab43fea0b3d63229c855c03e6f2d9f966b1b307a099611b453. 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/DEZ651209965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9e6940a9845226f7d281a0b0b70293e09a2ac29cd4363f4341f96a431d89f4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ651209969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf7163c125944c0e38484a87fba42ff6da40e80ea0f4e79ba5dcf7a44a2ee97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:57:23Z), 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/DEZ650910706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd673b5ec67e9f4352ed351e06082c453a256b6c7ae119e3e7aff34abacbab2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZ650910739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b1da4bdd1a827a8a5a4b58d56096d5c455a9958a4ae408a3095690c8146c38. 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/DEZ650813550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae593dd0b050d1c0660769a2f1364a35298b785884135cbd1b9b114dc6d42970. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZ650813552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0562edfc00939e30cc49027f2d532c95799bff6542c92a5d6847d929592e13. 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/DEC158500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67904367aa3747753b2ab7174e8b5e5b18523ee1ee3ef50f40ca542f14e70b48. 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/DEZ650813561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea832e27014b774358fcc78587e04c3545a096885b5fc4a12e79bb7222299c1. 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/DEC158400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa4e53905dd166747de7c741b438c7b6e7b954853e67e1a9a2d753ad8137c7c. 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/DEZ650813565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b215114afc5952084afefaf61546fc1dbd07bad0f1160f0f89f6810b38570. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650813498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f5ef064284dfc04053a00f1d2537fc23016c181f87d6744051feb44c419edf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650813500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3e4d0346f60afbe34c4a81ae416e35d6adaf619a163e73576dd2a24a8c96c0. 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/DEZ650813480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3321af0322843b3de38320f15475307f6d5ae19202d8790c5085954a031d0245. 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/DEZ650910748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5e09beee58c42f03a61e09fb84f8cebd9f134c51bc84920b08bac3089f69dd. 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/DEC158400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea832e27014b774358fcc78587e04c3545a096885b5fc4a12e79bb7222299c1. 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/DEC158400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd418da16cd689aee4ae21a4121cb2b611c295a587e6f172868b7dfc853969815. 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/DEC959500645.