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 0x4cadf069c2026897be97580c354fdc624980f51a4fb84f2e4b9e83533b080936. 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/7694c93b-4090-44b7-938b-a3cdee044529.json and https://artists.proofprofile.net/proofs/artist/7694c93b-4090-44b7-938b-a3cdee044529.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 0xb1b7b6394ede5b64c11aa9b9de09ab8f8eb409e826b6e0cef70d1df9315f44ea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UK6821728864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe777d80ccfa1aee4faf5292c79068d82d85ccf34dffc8e1a064a76e8045c09cf. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:18Z), 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/UK6821728859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1c0eb81ecdfcfaf093c0fd5b95079636fc1753d975de584ce2eaab89208dc9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UK6821728866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38a1790207a19ca082669bf032403b08c69a77954e2fc3a69ed9273fc798206. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UK6821728931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5aaa97dbec664b748233671ce1c72ddca1b9a7d9b1a79118dda060bc95b0dc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UK6821728873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b17d91f2eb8a9e461b86378a260f2d0a7eecd35b52ff2192d5aa7d65e38d579. 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/UK6821728892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4621fa45ec8125cf504373a51d3b646f90f516274e22388cb28239cb8d48c6. 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/UK6821728937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804be8e45ac3db037139e08cd2fb7fa85f2a1db57bd5374babba6619f3361222. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UK6821728893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5b611e4e706c7f5bbb3136b9841be699077289be81617dce8d527e516fea11. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:29Z), 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/UK6821728936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15de30f11aa227036a5a9c00bc151ae2d7a6fcaf70efc5a6ed3a8125a497897. 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/UK6821728898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0b420101c60753263dfe0911f21a004ab69d8500b165b984fd6412d5b266c1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:57Z), 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/UK6821728869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95326913c4a01cf1d2b2197e998dd572206412ca700b3385723a74e75f0e76. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/UK6821728915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bb3690d3d7a5232473c0be668838dc09cea87ef90e40c41cdb451d1813ae6c. 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/UK6821738601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe777d80ccfa1aee4faf5292c79068d82d85ccf34dffc8e1a064a76e8045c09cf. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UK6821728859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe777d80ccfa1aee4faf5292c79068d82d85ccf34dffc8e1a064a76e8045c09cf. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/UK6821728859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923fa35f5ada49f3e824419a373a2ed9edb91cdc9feb166bb60057eb5bd280e3. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/UK6821728896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0f917d2b86b29254c5c12db0b9ed5754db71d734d0a3d95aa15bd9311057ec. 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/UK6821728858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb643fbe0c1ca7a62fa9b6433d68f61af816efe6c3f8e209bd987b4bf319bd8b9. 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/UK6821728914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313bbe5aa369613d7c7ef362491aaad2ac12f02eb3e1ede353699d14be0c69ac. 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/UK6821728885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91bd49ab2efe828ef533c74c0971a25dc04dbdfe292483ceeae756ddadf0690. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:51Z), 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/UK6821728928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b82fcf268bce02fe04457404115de419e4887fb839f036069c4f7ace1b62e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/UK6821728897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8664009a4bb5df8a33b30206706bf507643bf7001d103331708eac68fb51fad2. 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/UK6821728934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23e27534999735fc7d25d1e4321a2f46d4aeead2d1c74ba2d6e07fb0f121c69. 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/UK6821747998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe743f5c694629359bd183e30d1847607601108647245ed515e706169cc50fef0. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/UK6821738846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6124e26107481e9c6179ed3c96786c3f050edf73c6bab4f8900302f273ca6e2f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:02:01Z), 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/UK6821728643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66beba2af622586f5eedf4f4a01c389a142dcb993065f1aef5c96002705b9ec. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:06:30Z), 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/UK6821749655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe5ff3a9f6d33dac30ab97be2f4ab690914b809cffe4cd0320486fee1461dcd. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UK6821728615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec71ac8359754d16ba30ddd52ed37acef61c54004c3f237b29ba90448767cf57. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/UK6821749480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1211feb0a26dbf686fb4625a24d58055a80508567d46382e5dc7915879560a. 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/UK6821738797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d509da526f92add017a7ba980da82ea402dbf6568b23ac4078d18fb128cdd50. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UK6821749777.