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 0x25f4f748f9df8b0b905823ea89ce346213d168199e3f7fbde34e45008dc0064e. 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/e16fcbcc-9fbd-4cf0-b130-253a4aaa30ad.json and https://artists.proofprofile.net/proofs/artist/e16fcbcc-9fbd-4cf0-b130-253a4aaa30ad.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 0xf11f2369a57d43838cf230e0d00e657132b76684f7d06a83fc43288da76549e8. 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/QZTB62304930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1456dd7f1c78f2c7bc5305236621d5b1335f675ba66b8078693d311ed67fb0c3. 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/SE6I32476825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6747968755ec97d7a2bb665a7fb0118e65f46008fa92b5fceb34456ac3ee64d. 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/SE62M2338288.
SKITER I DIN DALAHÄST - LNDBRG x Svardh Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653427c6dd967a7bdbc1fef620f9e747a2be23cf9777a570401e038c331353f9. 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/SE66N2311603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3050a67cb4c3657bda62cc8e7938c725d67f967e26b6391a3fa2cf58859e4. 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/SE6XX2322205.
SKITER I DIN DALAHÄST - Greta Tuborg Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3176cff99ac21302d5a487be6465af96cd0806a209402f075f9a66616d68841d. 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/QZTAU2315071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cccaaa4fe61c3cd3899a3b832a5d773f3aa5ef2d7891d1463b8f3b6fe6c1c. 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/SE6XW2335011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7886600e6bcd06c35794ede53a5060a5ac3b6d8f5540e56f82bb99e4864350. 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/SE66N2322964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e3e2aa180f6552ce4ff2e43ecca35d7c3aae2a1401357207ca91885cd115c3. 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/QZWFJ2336409.
SKITER I DIN DALAHÄST (Greta Tuborg Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3176cff99ac21302d5a487be6465af96cd0806a209402f075f9a66616d68841d. 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/QZTAU2315071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644066cd9d33059aec6385e29969547c1bca2cd74ee0b1ef30c254cf38eecce4. 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/UKXN22308166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760a31341183fecf9a5837641afaf72ad061c77d73c7e3fad28fa266398b11b1. 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/UKXN22307992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cccaaa4fe61c3cd3899a3b832a5d773f3aa5ef2d7891d1463b8f3b6fe6c1c. 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/SE6XW2335011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251b476ef1a006a2f0690a48730b6b35cccb291c5e7d9be852a10647b9e751b0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:04:46Z), 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/GBLFP2306592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dffbdc375d8440a2c70996b5cf91cde78e15bd6ebd096fd5ca0480ba10c348c. 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/GX3Q92381413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c1670568639d901e639d1766bbb775b32cab4530e6814fb18d9e61c30793d0. 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/GBMA22010007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285cef3cde5e511ea939e8f8ddc5b10289b89ab5400866255793a13f65e9764a. 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/GBMA21886612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d74f792ad6ab66a11efee0099ad0dee36ad6263591faa53cb63b390d5a7a026. 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/QZTAS2166889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa069ffa6a4ae497ac2a6f5abb9f199d5cb33baf6b7e313a6a97793acef196796. 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/SE5BU2468817.