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 0x4594b9362e02a3cf18bf0d5708f6f1f012810c6c77df62f0e567fea109714f59. 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/322b91f0-39ea-41c6-896f-14a188671e3b.json and https://artists.proofprofile.net/proofs/artist/322b91f0-39ea-41c6-896f-14a188671e3b.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 0xe99281f31834c5b430b9724ba373b2b26e43ca75a576e4a7fb8d70559248ee0c. 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/CH4061601388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cceb2e1a8e9b7c18c3d130a4e948a33a19d6f534231c28ee977701d448b0289. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:36:57Z), 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/CH4061801528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a76c473f9c758fc31eefd0051a0fd92ef315c769de189d5cd3c4b7ad8646c7. 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/CH4061801530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5097f1cf387de885515201a7e6a3d0b8f3cc53d8ffe2670670e582d9fcd4d4c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH4061801531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c59032ad3044eb24fc60736ec96f8fea8961bb654f217e87befbb75408880f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:32Z), 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/CH4061901541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee139509c19e7151dfa645e4a90b3cc5ef71e25d539b1c7c09e2adb21d5a7a86. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH4061901543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7b197c75a032551c142b99caa99c50bbfe8191f12991c7a7230e65056fdcec. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/CH7812046726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61065a08b0d3cb103b135955a99e1bd35eb612fbb391ded8cc9ab4d7ea1dadf0. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/CH7812049960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267606c72bcddc7bed563a6569f11a3abd86bbeec003ea9ee5d221090ee3cf88. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/CH7812101763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595d21dd0a29aa77ae33ec7dfd7cdb967490987a8e271dbfdb0d6fc6402de4b. 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/CH7812233841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1261ddd2d6c88d1efecc6e522452ace42e79171a2f6c7cd7f3ff9a1919aabafa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH7812359862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58bf773d806bf687bba4bb003f87399d653e44265b3fde58fb7e6a670ac8fc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CH7812359863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1805893fb0cada291ddd4ea5ee39fb8585f99a0cc2463d0d682795a378c1a5d6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7812359790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595d21dd0a29aa77ae33ec7dfd7cdb967490987a8e271dbfdb0d6fc6402de4b. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/CH7812233841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd0c8388d16ada44d9d37ad2ed88806131bd5ec09e27d2a67b953150350b62f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CH7812359864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471248548338b563d75866e3273b3c4e57fba2382c5a45e594abf6256d872f55. 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/CH7812359865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2273ede09444557ca4ee6c44549ea569ced1c486725e24b75c93515a656166c9. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:12Z), 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/CH7812359866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87ff00118ceebec4cb868a3a8acfdf80d9409bf848f5896947b8cd316172dfc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:48Z), 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/CH7812410300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c55aa8b06ce693e1bff79e169bea7b89e9d863974f47730d1983de9cb0e060. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CH7812416095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d3f7b40c105a7ee406b42a201c6621b1676b476b2dc6a85c90505599b284af. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CH7812420861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d9bff6c3fda0988b6691393d2b2bdd6fab81992c6b3b348ce767dcb7468aea. 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/CH7812529090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea8c2c8389ab26cc2d0f5ba9fe6ec1fc7764e33daa860d7254e804aa2c21955. 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/CH4062301731.