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 0xb310a5bf51b11b0940f2e2b05a683edef82dab7ef927216855aaccb2016a4e37. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/424a2730-ef85-4049-8491-71325a6be3ec.json and https://artists.proofprofile.net/proofs/artist/424a2730-ef85-4049-8491-71325a6be3ec.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 0x8ded93e4093fbabce7cab91286f8c1232ceb1ef3a111dd6fcf269b224fe51bb6. 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/CAGOO2488298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1d1b3765d8dded430f7a140d43b3fd620e5085324c598727f63005bdffaa98. 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/CAGOO2488342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d47e66ff41269cc410f054898e1f0b69e5fd2b1ae769683f0f6d74317b59a35. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNMV2476701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f8b5cbd12329beeab2a3c27d3e08535b4450117faee085276f9ccc77fb03ff. 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/QZNMV2476705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb779cce529a1fb593c047fe792f988f8a7513bfc09763fc996efa967b7d5a1a. 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/QZNMV2476707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdc618a2f21c94b0ca7b7c90a6069cec12664a3f87440e6dcea983952de9af7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:52:42Z), 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/QZNMV2476708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1081158cd1f74f0a3cc378baf2fd599207e1c16b9372180d9b6a4b7ef865267c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNMV2474583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e20d2131673729a897168d2370c37636c07c61c7b1dbc7c361557bb17fe51d. 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/QZNMV2474584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0b32021ab38a8c1c6a60d1fd703998a2042725cbe1823fb52bb2e0bc16b0c0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNMV2474585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f1a53724b775f6735207797d6e43e98bb9fe743365580394c596f23c14608e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:43Z), 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/QZNMV2474586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea83a1848d89a00d3874a2a5e1eea7e578c2228a110fd2b85d4e526f9483ef16. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZNMV2474589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e4bb5285d2ee3548565b5e3b264a04dfe82a297b14fcd164d17e7463dc66e9. 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/QZNMV2474590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f76741a40880ebbc7e73793affef41a1350e34925ef81356fba14fa02511e37. 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/QZNMV2474591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c952f526e2b18c871bc8e37013ca47fb91282949877085527af4d41802c5d. 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/QZNMV2474592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1a5a0ea297940ff4a585380c3b6afbcd295e932d9deb062e6aff6c945e92fa. 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/QZNMV2474593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c272648f9c61ba2ca695fc3aaae17a0e9465d6b5c836f246abcfc8aad160f82. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZNMV2474594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eeb306bb5d4a76d16901b82de680c467c315cde030524241646879e165fc2e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:01Z), 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/QZNMW2407425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f01efe9556be9b7e2d0b3620adc9e47fda35a2ffe5f39a585b52f583c0030. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:26:43Z), 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/QZNMW2407426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9649d443b1dfe13c609f98e3074a03e4eb9f41deeaf65a8b6e4be90c8b0035a. 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/QZNMW2407427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc148f031f914051ba51d428b0bcc5eb9295252dd5fc54729fad66ffb3e69db39. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:23:41Z), 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/QZNMW2407428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf828a5968c3b9ff981557ac81fd4e288a63c1c5901a92da3cd0d4fb9a778e0c5. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZNMW2407430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf8168ae90e4a35e0bf096ad27b8ba9a5a28c14a76b2a09a85a6b6df84f5d0a. 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/QZNMW2407431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a3170cbaa44cb07c24465ae1382c13304691e6434078373909029ade1fa353. 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/QZNMW2407433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9192ef5c118f7f7be4efddc19e250eeb42c3172b500b748ee6099e330462a3f3. 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/QZNMW2407434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c1da71c979918beab57e57c07c9d027c0d42aa41cc2f2bdc8219e74243d491. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZNMW2407435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32772ebad94712d9a5ccb3698ada1c7a8915ef8139ecf0ff4a3a550c932e696e. 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/QZNMW2407436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c10d4164efa3f6fba98a23ce51516c214eec0e21045f0fc6753a25a37d8ea1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNMW2407437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9ab298e2419e70d189ad18dc907c85f385876e57f327352be6e197ffa9222. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:50Z), 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/CBEYJ2402087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8ad788bd263466da4b92d7d82c883c21994e405a72c3f9fb87d882ca279917. 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/CAHQJ2575972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a3bf20cb9dd2b164e9766fb495496419b6c2fe57ee89bdac89d65d350ed88d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CAHQJ2575975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30afb0e15f88a2c9e3939595430d739f815ea9e0c7cf7eb59782a16bb0ffe13c. 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/CAHQJ2575976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2acab3d5fa5f43c1ebebbd13d0d6089d3d5e8bed0c5d114a462fa47c503c9. 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/CAHQJ2575980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eae6a2b4993d0f0f40bc064e1e41779c1e3abc78872ed5ad21ab6deac61301. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CACWV2522403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe926040bccfed452d8198f7aecded3ad2ce8aa5718bef21675492d02f01f9f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CACWV2522404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afcde43c124a2af50902f7f579685e2af2b88e95cbd8b21b5164deeb61e420a. 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/CACWV2522407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb245eb60cac1a93973c26db693d5b63fe083cfd265ab1a97194c77602764ab13. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:57Z), 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/CACWV2522408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18431bdf504dba212e16c14c4e8c8ac1fa3b04b7a9969d19a67fcefe03a343b2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CACWV2522412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1482e6acdd4758cdd6be3add0c14a920939f2f49bf3680754d30d2d7e1665ca4. 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/QZZ7P2574852.