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 0x4bc69a9f190ff1e166bebefd0607be279c7f095b1b34f75b253702a6f534f0ae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/773ebee7-1c03-4bd7-abe0-be679b5444f5.json and https://artists.proofprofile.net/proofs/artist/773ebee7-1c03-4bd7-abe0-be679b5444f5.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 0x404ae11b8c87953d75fd48040e09a3f18ea9cd8f314934626fc0cde12851d152. 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/FRU451600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ee247250f1e9761ae70d0dc9757511885674c367cbc6769bc6749063836845. 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/FRU451600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404ae11b8c87953d75fd48040e09a3f18ea9cd8f314934626fc0cde12851d152. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRU451600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94305d3b8955055204b9c4f3398c9275b6b8af46f0a05364cc5b629065e3a349. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRU451600079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14537bff0a313d9ab669638b9e8f2f909b23db9699fcf9eead51eb04275d9087. 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/FRU451600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ee247250f1e9761ae70d0dc9757511885674c367cbc6769bc6749063836845. 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/FRU451600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec9635e72111c1b5c721972349814d2e116bfc2ac5f2e667ce75482efc00060. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FR9W11811302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fa249202a75381e92a9335c9bc413e3f4c5331ef6d8c4638f1c39d0134561b. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FR9W11810174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f402f2be4bb4152372c740091b424a765d8645ebfa6bb1a2cd79940f9411c3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W11811297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b0ddc32a385967ceb298b0c1e1441c4c1f4d104f0ca42e5930a75bb3ab1940. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR9W11811299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef670c32f92052e9d32bf598b18b132146c08c7d40e22cdf207f89394a4199db. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W11917672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef670c32f92052e9d32bf598b18b132146c08c7d40e22cdf207f89394a4199db. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W11917672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d27a284c4be0e9a8af2bb20cf46c0ae3615029c12b01478213aaf96cd0e64d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:01:33Z), 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/FR9W12020805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd648684452d31924d962a78658eb10e635dbc7c538fc2540b5484dcf375b700d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR9W12020807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eff7a36a3c0a8d975c1b92210de98f627d9ff9dc48634ee3fe6e8d7f58d218. 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/FR9W12020808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bd424a6d8fee80c78201c865319e46ef06c6a7b93986e077786f64117b1727. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR9W12020804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0b753302857d8332872c39cf244f4b12c2e77b46e0fc4c9eaa9184f5793eac. 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/FR9W12326832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e5d1fa536c25ffa3af29b4cb650e06d630236573ee2e2ffbac4b2f3599ae1b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:03:16Z), 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/FR9W12326833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44c68340ab3e526d1aa94bd787b70a0cc8b91768cc7d964484298ac6567d57c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR9W12326834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd05bcec6251c2198d50a4458cf1cd3b0b4f2db4a0f5614bf962552bc88da6f4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:39Z), 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/FR9W12326835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2177e2497554bcb3d3b4c3c8274cc435ea52ace601eefb7e218b5087d8fae7. 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/FR9W12326838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62600159caf0911533db9f76405a673feb1f739e22d6be0a8bd580b110972c82. 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/FR9W12326840.