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 0x8383b5137dd5c2869fde98ccdbbbe4ae8a098aa1a104d17f8248baaff638e7a3. 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/a5c57ac6-ac63-4ffb-97d0-59150b2a67ce.json and https://artists.proofprofile.net/proofs/artist/a5c57ac6-ac63-4ffb-97d0-59150b2a67ce.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 0x1f5b286889a9bfeda9a63596744c2014f81a0a849542682bfa4dc479e7ef29e3. 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/SE49U2221201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05c6424a0ab642375c490c879b5219eb2be787a6b0f9e453805fc98bb1ceaa8. 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/SE49U2221202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0207f9e2ae2e412325f613103d992de4e0deafcd85f36737c91471cbd02a48. 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/SE49U2447601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87214effb80e05dbcc04239723f1e7b5e0bea704dd6f807a0b2b3198b0057c6. 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/SE49U2444701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa4a3f53e52083cf045cfbd44e58ed99450b2fc13444ad8bfbd75a534695645. 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/SE49U2444101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c86b207a47c7b2ef9fdab012a45a447d3faa1dd6be74a136f397f26603a4b77. 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/SE49U2443501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7015eb67b4b77a6bbaac974dd201556422f0d323aac0febb382a2a54a9d11b23. 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/SE49U2441802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d5ec6188645f144d3226a530c5100d4ccfbd2eb1564ac759cedb5916c5269d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE49U2442801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf994f8c645991e213c1d889c9e79d83da79d752c1c3e24a377f7b7a8272ad837. 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/SE49U2441201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3670bb013d12dff3bfb86a344edfde88892796f2e3f31b018f7b74d91818135c. 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/SE49U2340001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef993dcb3909913ae04a8d14597b689897b7b97fcacab6d7eea4c0d9ea8f19. 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/SE49U2338701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0839a09e3830556abc62914ec09871ca61e194d3d246fd579204cf7df6a8ad. 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/SE49U2337401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510616a6a6321a990d58a7bf61f73208b4967f9febba6a2b217dd026b6150646. 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/SE49U2335801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec50e5cf8afe420464f3fc6e418070fd4990e59a75ae181f2b7aa132235f9298. 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/SE49U2334401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0a935240651ee8e70d8c266fb7df63c20770d563758b212f7787a12c13db7e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE49U2328501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa598059c967d028ad0647929e588e660f061ebd0e758782851f1d9cead976b2e. 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/SE49U2327601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a46ce17acc94f4f7b486886e453884f68792da39426ccf1da10b38559d68599. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE49U2326501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671c6a42ed94d44156939992b8262cc04144418793b5191a7de0518ccda1b476. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE49U2325901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db149e2e52c52776da70b7141fc4408c21eacddaa6383baacb7e5d18d1fc167. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE49U2325301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a3df5a3cd78e7ffb89cc692371d47f44230159f2c3054553a426320311af50. 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/SE49U2324801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f530d60f251bb086fef0349566064fbab8b4520b7f5b1f05bf8c6b6abfc47cb. 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/SE49U2224301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd82693b1569f309c3b14818bb092b95cff862853aba66785fc088d9985c2e3. 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/SE49U2223001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf002a859c2e2f3df2c1d159903c07a614f23849466348daa63a6d88770d0e9. 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/SE49U2222301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a3311466d9267d7488a10e7b76c14a30c84f5c00edff4dec4605023f668bd9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE49U2221801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce798c053c3d28a52e5eb653863edd104a64bac65fa12be1087c138e9941455. 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/SE49U2220201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61dce9df78dd1fcadded318b4c999bf0ff99c35a7196e84d6fff74f672569a9. 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/SE49U2219401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c18f2578b3eeddfd9cb66c3140015287852b2659257ba4bce59c482cbd9b376. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE49U2218901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd509a85e67670e76f8d9afa6775dc444bd68f637013f0cd3434d8ea1b40a38c. 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/SE49U2218401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b5e9e7b9288a422db4e6bb8fc652d718e8794033d79b56692ef2391be74508. 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/SE49U2217901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90ea46d7d9f7b565ee4279ad3826fee664af4d79802566f749d4e112e154fee. 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/SE49U2217101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae62e223865b12578462f54e541d476a397d53220f9aa78b6ad3962f43fb232. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE49U2216301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e99e18b497b7c3c050278fc2477bd68a95339ce1eabbcf1ce559f3cc2afeb50. 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/SE49U2113401.