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 0x8eefc33f8b2d8c0843f18a11d29577a9faf7a228dccd9edcbcdf78f32ddd0cd8. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcec1d5f-d33e-4e99-b2c8-bf4b18e549fb.json and https://artists.proofprofile.net/proofs/artist/dcec1d5f-d33e-4e99-b2c8-bf4b18e549fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Discover Music from Scotland with ARC Music
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 0xae3be1c4cb4a2826af2db95cb1efbfadd07691e41a293cf8c4662190be751600. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAAU9801237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4afbcec56b360346b923a1834b6baaa4079df29a5d44f0ae0ef95e266ffd4c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBGLJ0540008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6993d9886ec4b7e8df4b6994a36d656d1c11f3449c9e0bc8be275f308ae4054. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBGLJ0014007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b28c4fc2cd8f8dd2d7138e219889bb3eb3afad81516343396c77067d2d5f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBGLJ0014011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010747e690da8614684a1701d563fb7e9275cb2a295db9c789e76f5dcfc84a7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBGLJ0424012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bb5f988ac689e037cdb4de9bbcd36d4923ca53a2173a845e1f56572cccb3fe. 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/GBGLJ0218007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3bd79053bc42dc007599ef386ddd9e3d2d0bfdfec12de88054b64b366d9a40. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBGLJ0536001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38449cb8b91c9769404eed1e3dd61333cb2a881bdee1fa470a86e5cb515d608. 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/GBGLJ9406008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6993d9886ec4b7e8df4b6994a36d656d1c11f3449c9e0bc8be275f308ae4054. 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/GBGLJ0014007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f6710782be37952ff3aacbd547104d57c17d12e66327de903f70a7a77206a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBGLJ0013001.
M'eudail air do shùilean donna / Làrach do thacaidean
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f20b841dfbc9db81ec1852913bc1313015596cf229533802dd1d668bec9b51f. 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/GBGLJ9507001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7505a12fb6af67c7db1cb131756bec497e085f742f4b8b2d7820f90300680629. 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/GBGLJ9508013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778435246497595b022ee1a9f1fc03c8c395277b74db5ca9baa6e25c3fcecf5e. 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/GBGLJ9406001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b28c4fc2cd8f8dd2d7138e219889bb3eb3afad81516343396c77067d2d5f3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBGLJ0014011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db5aadc7b44b0bd9557ce00b1360d0fca56cec02e1daee364987aae4ee9faa3. 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/GBGLJ0223004.
Highlands And Islands Vol One: Loch Shiel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071698c1c9eabc2fad26c6f9e5d6dc23ffaa7e7baf8979f4fc896f9aa7688fee. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFHQ0302504.