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 0x521c24cf7961f7c4f1442fcc83e28fae39037b365b02eef4bd6955b13c139980. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7af72fd0-c6b1-4a25-9289-f91dbe993110.json and https://artists.proofprofile.net/proofs/artist/7af72fd0-c6b1-4a25-9289-f91dbe993110.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 0xa1fc8700a97b9ea542aeff956200cbdc16cdca343d3d3b9da5d0e36678268263. 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/DKADG1900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a4d948e820b709802b15318258f0e28e51bc529535325df0f375d97f21cdf. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:27:50Z), 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/DKADG1900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f9a2c41a95f801a8bc2a5dc8d651f68fdc5e3d212bc8a908b76d60d1433652. 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/DKADG1900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a4fb02008861c1fa9c7dab72fc0a71a58a111571d9887abda743237c1c59d5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DKADG2100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c66c9078af76d8f0e2343e27ba1b792b2d3c5241675c3ed95fc30d95611aac. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:08Z), 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/DKADG2101037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8737f8bb3e4d524f89655093adda7aca3bf406873ba4cc393e5c652a00440dce. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:23:02Z), 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/DKADG2101038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267287f350569d064f10202779ac239b9b8f1cbe8e405ade71bfd59150ba02b3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DKADG2101039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182ba05e7152d2ccc346a1136a212c7cc8e97cb72cb2eae8927b9e70b9ba1a45. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:51:19Z), 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/DKADG2101040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa827d6cbde0da980335c65088865b0760985da31c0787c4ed10925f5f822045d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DKADG2101042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7284da1ced68af07770d9670dd005addc7d7b96c2219dce765791cbd4c6361ee. 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/DKADG2101044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ece2e3325568d6f77a1148f7f8dccfb3d10040bcd99d4b4bcca2c95253030fe. 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/DKADG2200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee35a09b0871e2fcc6e3beb6ada73ba6fa9bbb31661c33ec9e0b0bc697cc09f. 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/DKADG2300438.
Kurder I København (feat. ZK & Luna Ersahin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d52a46b50f3b4cecc9b27006782486b9ab36415e51e4d0e035bd9d8cf95c15. 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/DKADG2200876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a40c2c61d4836629582e0710cca00e4603123cfa9b9521e99a709da906a9b88. 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/DKADG2101095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6248b2eb1ddb7bdc3b121568dcc9d1c36b67643624d9d8de8bcf0dab7510db5. 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/DKADG2000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9a62e8f9cec50cc8d9a56184ec9ea17bf4519d22489740a3b78006f262badf. 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/DKADG2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26157bb896622bbd62b33b675bb54d000647310637a7366546e7d9d5a9170e5. 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/DKADG1900740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843827ee66c303783603a3cbd4f3a8427ef9d601d97cbdd616eca4a29272f23. 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/DKADG2200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ca73383b70372cf7016c56399e5b63e2822c511fba5c6cbfb703d239dc980a. 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/DK4YA2010302.