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 0x1d6fedc3eb0a28dcff70aacbda242fb9f703805304474c69da7194b7e3d044b4. 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/43c23e8a-1702-424c-939b-9eeae93f9110.json and https://artists.proofprofile.net/proofs/artist/43c23e8a-1702-424c-939b-9eeae93f9110.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 0x74d4b730ebd8259a1beb73589b0915c1d14a54bea71be16f1529948ae04aa211. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA1D2398544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ebfa1d1b323e9132599951eb6a52e25901271cc29b931f0d9873285d708f6a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/RUA1D2398545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32511f4498b6718c90679fc20174a0010308829495e53423e24e1e2f94395e0. 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/RUA1D2398546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6527a489e0c2168a43e6599366682cfb3bb62bf824ed1409fa89f76ce5efa98. 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/RUA1D2398547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f769e15d15b8ce49ceebc02605d2ec2648f0394450b4762c186d96f2616010. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:42:08Z), 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/RUA1D2398548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336f4629b05b4a4b86981dce3e3b3bdc9212d83fd0f92671812696bf9d17454e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/RUA1D2398551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca86fbe1051e40cb3d3262dafb59c0d838b9907331882e7833d2dc7589a59a74. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/RUAGT2370674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f46c388fc8f7ff2e65b6c7c2cf18b3259491bbf82fce3ae734344ece75b4a0. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/RUAGT2370675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260839f5d2e2f2fa02b24b8a6f2f2ee35f607bae387c474434d35256eae371ac. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/RUAGT2370676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85eb9e275c3aed74f8d2c81f54818cc68bb6057fe82486152432da06080e1ab. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:50:19Z), 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/RUAGT2438510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16312b7ec1bde5176a6a94393882dd7ba0260576c9195bf16aff3b7b8ea04aac. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:37:49Z), 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/RUAGT2436865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54e0edaba50167da563e631938c04c52c6ae2d9dc799ba15e64724a35323fe1. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/RUAGT2526246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067f3803e2568478c5d3f081b59a9ead4ee643368208372fdca4ae921238beab. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:24:47Z), 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/RUAGT2526247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793bbfc393a37908690f8c3fab333e1fe4ddc334f395b6a789d1dad95a15756b. 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/RUAGT2526248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c4484c36a44f643e7577b0b6206fc005c11768a5acd52b9c1c05ba282f28bf. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:48Z), 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/RUAGT2526250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9d8189bd278a2fa9c73ff53ba2179e4faa84ed38499e0fb781cbcf2a42e82c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/RUAGT2526251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443ed026a5a6a497cc45143c515b896657f383fe3c7c7d51e1dfc4a8c77018a5. 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/RUAGT2526252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011f83567234f03a454151c22783b38e0ecf2ae8f15e39cc2ae1c2133b57fc48. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:10:24Z), 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/RUAGT2526253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a46bed0ed124ed6613e3938fe04fcd8e7b927b4d838bc1bf9612ed93a409740. 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/RUAGT2462233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacabbfd29b00ff7a2f49fb93f56d38e6ab81b6760cd7f85432621cc5ba3aa65e. 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/RUAGV2407512.