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 0xf228a35c6740b00f74fafe603e31c666189bf7be8de2f1a29c56fde016351cc1. 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/14a292cc-e065-4bf8-ac29-fc383779b9dd.json and https://artists.proofprofile.net/proofs/artist/14a292cc-e065-4bf8-ac29-fc383779b9dd.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 0x47d9dd7092629593df6c4330dd4067e651320e1a75db8ab690b3becce192dfdb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATE611300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abd6d28507035e6734e1c5de923fb9e89c979b4794197e0773ab5a44ddcf075. 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/ATE611300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8e76ce73af53a689abe8e0fd942569eafd535d8211b8d666f40d6de5138227. 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/ATE611500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f65d59536a28f101bd5acf5683b98948dc976c9316131c7aca7b7aa9755ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ATE612010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1331503972dfa37d2059bdc1413010bb8755f7736ff05f8999f18f5950422c7f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ATE611900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54de70e8ad1fb9a287b636beab186603ef4bac95f4213d9a15c0f72d3e8ad908. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATE611900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec4b8c619001d02e57db7fa3b585f9f789221ec2a58eed987d5db9ea11b2b17. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ATE611700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4950acda1ec6d4b9a8d3dbdd8d2670905bd6227dd20d05aa3bf70891e40a2d59. 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/ATE610800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bdf723e8db03c2b0a8186c29addc42c65494b9d28f2afdd017e1083a2c6fad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATE611300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414f1260f6518eb9f947faee71e4c43d247268d52c76b4eff956242969d7aa5f. 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/ATE612000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23969cc786b778527dbb1630d485011fdecec45e991af28c51d5e579aab1274b. 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/ATE612000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81539fe39c5155d3ca81ce6ecc15cd67fd0993a19a36b36fe980bbdf8d12196b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATE612000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc10ad85b4e4bd3ef934624e7b4f5a730fba8080830cb98de3909267d9ef524a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ATE610900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5372c402c8c9a9bd9b3154fbc9ba780799ced43e85d9fc0972b6afaca204ad4. 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/ATE610900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357985bdeebcffc8df982aaee4dfeb98ff9ec1d4149353ed8f9bc7e7d5c9a6a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ATE610900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff34e91179805117d1bd1668f312b2bb3b405ac8ae65dd3cc49df344c01bc223. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATE610900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4950acda1ec6d4b9a8d3dbdd8d2670905bd6227dd20d05aa3bf70891e40a2d59. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATE610800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f65d59536a28f101bd5acf5683b98948dc976c9316131c7aca7b7aa9755ff. 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/ATE612010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f65d59536a28f101bd5acf5683b98948dc976c9316131c7aca7b7aa9755ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATE612010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1331503972dfa37d2059bdc1413010bb8755f7736ff05f8999f18f5950422c7f. 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/ATE611900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54de70e8ad1fb9a287b636beab186603ef4bac95f4213d9a15c0f72d3e8ad908. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ATE611900009.