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 0x81985a3b7f8e9057c5e917e82d33df40cc6de1f5b9afa97773c1dd578aa93fe0. 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/78e92e60-d702-4c6e-8d71-f88fcc8769a3.json and https://artists.proofprofile.net/proofs/artist/78e92e60-d702-4c6e-8d71-f88fcc8769a3.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 0x76fe767744ba3c653c99f4ac23d152e48bdd214cc79152244818faa356d0f3a0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPS601900783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1b999d6dc6e458a6604315445998bb0bc48ad3e35ed5aaad5d2e9106e6124c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPS601900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8df42a04a187f417626af463e3d775f91d24596cd8c18394d3bcc8b96293f9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:40Z), 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/JPS601900706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45740744d41741ffaecd96fbf3043229f7b01224de1d18a00e64f22f0e7bfabb. 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/JPS601900705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafbce8743909d973b64f35cf18348efbe6b16c84797255591ea6fcb2b4b703f. 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/JPS601900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab0660470be586710f04720f7908c311d1f375474bcd7e591d2df028348e570. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:47:25Z), 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/JPS601900892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b278a0c7003c008452b67c7952a0b07585218852d0363f0874380069bdef1f8. 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/JPS602000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f4b4f96fb5f7cbdda34d7919b6516400c0850bc83fc76de0c656b0eb17421b. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/JPS602000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93995365a6881b3dd182c8857be772a80592c403d81450fc98b245411e959c58. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:16Z), 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/JPS602102907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8086768ae037db17f0153b0280ea022efcd4315c1c4a2027fd362ebcbfa229. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JPS602104228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1955d966d35f675a132229e6e8ecec8b665c0705171675f8e72d7668a14819e6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPS602106319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1955d966d35f675a132229e6e8ecec8b665c0705171675f8e72d7668a14819e6. 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/JPS602106319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b21735913375f8decb742a7f68f19f754032200a01fe50a68c2812d5ed39377. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:45:41Z), 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/JPS602107582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd03ff2a8224486b66c7c8563e8313cf8d6f3202ae45580d9054422486101808. 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/JPS602402667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3285ba78663f133f51db8555d2b2da320ad467e2c1a6a8a46ecee4934e1a13bf. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPS602402666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22328539465582a14adfbfad976431bf69f4e2c7211c1141bac76b69acaef20. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPS602403264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f206c8a0591e09f17838dd4990fe55a5b514c2dbf511e67b856908fb155234. 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/JPS602500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f206c8a0591e09f17838dd4990fe55a5b514c2dbf511e67b856908fb155234. 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/JPS602500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b1856fe3abaa0d7f0703ac7e4b40ad4e1da635a84372878ba8cabd67fd42e9. 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/JPS602500604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16320d0e6918703c13570abb61791a2afd5a0031642525a052496ee8502d269c. 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/JPS602501249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eacbc45fd9a296e7c1b377876da67d30afa72273a3d57523a64381487e20df. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPS602502360.