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 0xb1cab8fec4b35f2523476eef8b7ab3c409cc325c8fe25642d23944214b9f14ee. 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/a55c280e-1bbf-4b50-952d-a9cc6f3f66e3.json and https://artists.proofprofile.net/proofs/artist/a55c280e-1bbf-4b50-952d-a9cc6f3f66e3.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 0xea5ebae78a71ca66904f1729d9f8cc948204292d5da7db5869069d6a8e21fa3a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:52Z), 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/GX8KD2521104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f19a04c3cd8c58f98d5e0246d341c20f5faf80549e4626d8f8621c498481ec. 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/GX8KD2590616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e8cb18021c5236f1f67a055d59b82580004575fe6077c356d784c6318e987. 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/GX8KD2519689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6caba0bc0a0e0e5ad177d55559bba0163d49a400982a5c93b263d7cca94b746. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX8KD2559039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb231d4ba4a8701ee8f376d16f1c9f18ff086f3fa94ee215d6bfc7b723012a99. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:32Z), 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/GX8KD2537177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6380667d960307a4885d8beb37868bfc7b80729910ac7bf22929c04747cbd9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX8KD2543519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba0f7339eae8ddcb4d974ef6d952a79bab6f3af7e16492dfcb72597f06496fb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:59:41Z), 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/GX8KD2555374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519877aed9760f9b9069e0213f13b389e1234ce55443fe74e204428aeea73656. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GX8KD2534675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387070a4b3fb8d3f91cf5ac1477a0485816097544252d9e04c3f00246413061. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:52Z), 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/GX8KD2548050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dbafda418dbf34e97ccec5df3b6843de8b80789bc6ef3730d1280c707c26dd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX8KD2560725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bfaedb244ec940a0b9fac9ab9ecb9d1edd99a953ec58c071d9789b424e33d8. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GX8KD2530175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabfb063fb2f4688c3b7727a7e6e070448973016af79a980ef1f3294faed8c8b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX8KD2591078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33419bad073ea4fa55c674f983b3e5fe24318cb4ff26103f446bd048812618d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/GX8KD2552718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69be74e0bee90283237b4fc9da353adb3bc295886c5192a7bb9adc25181f91cc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXBDT2550090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b42a0f83ac395006cd29bf064f997223ac0476cd785ce33365e9f9137c17db. 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/GXBDT2543122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5a120b544cf4241a16e956ecebeb0cc1be1b6f8b9a513191bdf44eddf0c229. 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/GXBDT2594816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632040ce4fe40d688a58dcbc56de99fcc98640fcf31b8d7c83448cad619ad13a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:45:19Z), 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/GXBDT2564049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9583360c125bdca01bcc573dc9bd3ad0a7bd6ddc5dc7e81b02c693686c357cbf. 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/GXBDT2591102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef40ac26536fb6929b7de01fa755a1e2121a045c1461d54f3e2805ff8e19d3a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXBDT2519922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e2503456a136133a04d6e81d123b8537d11b8b1f5732f52dc27a82669c9f76. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/GXBDT2503122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabaa63108f7cd88c62cc28ed66598434135d7ba8653a5c3d69cf7faa2735a68. 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/GXBDT2534534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9b44e3214560b43b08b4a062fa8e095b4398b44869064a8b6f18da7c6d9a62. 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/GXBDT2538375.