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 0x22b2ae2a98588ea6dbbc3994af25b16d68942c7d26063bc211af82c25f983011. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0112d395-f0ac-425a-a4e0-8375cfa21b71.json and https://artists.proofprofile.net/proofs/artist/0112d395-f0ac-425a-a4e0-8375cfa21b71.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 0x65bdae7ce058c7686173fe853dcbb689af8808616820010b2ac76839f651c7ef. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GBLPF2526941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910d2f3285f17d2c842b3408ff3004c8009c19a52974a41bb32bbe0310ba0417. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:11:30Z), 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/DEP552004649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bf5f1b697701ec2e430d2a81b457331213d9acaabaf9409a13af7530d5e691. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEP552005563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc04494ce38610f9681db1178e7860fe08a06181e9d0a8e798833e02d9cbc7f6. 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/DEP552005466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7f532df7020da0dbe621475d6f72afad500486a9cdaa1431b0df13355e1402. 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/DEP552005037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0408fc1bbfa07b288f581fb076927041d7b902fd6ed3e856616bf0a731a6c67d. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEP552005619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245bfa4b1c2941967c6992bd14547a9aa94f9d4f7395275f7d974e4cc2144275. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEP552005719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5549b784001a6bfb1c0632e3ff412c653b0c8e3d77300997d8ef6659ab5fee48. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/DEP552005720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ec1e50ef7ff2dcff49f97bdefdb647927f83ff05a63fbf3f075323adb307b4. 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/DEP552005722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76705461a91c5a2984748dbcd7cda28217d4eb399ccf1f40fefbb398f5805983. 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/DEP552005710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f149ef638e7eaeef86125e32e16454dd358389b6985403fcadbeb0c7246685. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:44Z), 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/DEP552005876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca0dac19e59a8dc229e6f98cecde43bfa885966ba6058dd79f512dbd6a4fc74. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEP552005554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d761475e943f2217469bab37727a16c6caac3cce874dd9044f3e621d2f4a5bb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEP552005930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4450f0e43529e79336ca261671a0aacf31e426f2bcd626c4178a684407224b. 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/DEP552006176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd9109e4c74609de2205866058f635a966f6807052e8d1f30c93c105d0e2f1c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEP552006192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a2a462b9d4e25d10bd67977ade56cc01f2b015cab62ca24dcc5e87090a0c57. 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/DEP552005566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea0f008715c4b1d3e14e638e521e1adac95641d24f2b2dd27ff490b682f8abb. 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/TCAJY2573103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31982461f1c5b241b2821d0d984103d54ae8bb761ab8b7784956f7e11f2aedc3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:13:14Z), 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/TCAJZ2517271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2c094f5db8db8696dab77a397678c2f500b67dadd318f3a4c4701b50945000. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QT65Y2570952.