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 0x4268060f9e3b1851ce89f0385d2b1f460c3f0f59bb5a279f133992522c362c9a. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af7fd910-946c-4cea-a22e-5074b3dbdd7e.json and https://artists.proofprofile.net/proofs/artist/af7fd910-946c-4cea-a22e-5074b3dbdd7e.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 0xd86a231a2e407e121c1eda9af03cdd00698b8fcd180c56b27af81696fba39219. 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/DE1JU0787036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82418593c1fddb69cbea2789055df14736630d8497fbad00cf99915bbe1adeb7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:21Z), 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/DE1JU0787038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d828212a2aa8692603dc07679db9b3e6360298a93caea091109b51e23d767d. 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/DE1JU0787039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bab796e56993090f0c2e6e05503601c07f8bf921a53e168d8e190274f007a0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:46Z), 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/DE1JU0787035.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483ec833a1182deb0c68e25145ab7cf4af838fd9be1f8a96589264b98f381c82. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DE1JU0787037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489dbbbf99c5df6c6c90aae22ef431e36468ff232eac989bd4c5f4016236ad8a. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DE1JU0787040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0074976ecb4a021c5d7eebb501962189043cbc35321096eaa55f3ccefe3cd846. 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/DEGQ81504488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb856ceb83abf264426d0a23a5b395f02acfed053d40c90eb52b5a04a61feea49. 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/DEGQ81504490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433ff104820374c50b6122b89901d23b96f172eff91d8d29b7b28a09f1eb69a9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEGQ81504489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7b5d7f0e16b139ae21b75d38b40043440590852c5324c5071bad33f3797f94. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEGQ81504491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31554037142d6422d198c59953b15543d2aa8a00d55999a6b0c23d66342c6539. 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/DEGQ81504564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd933f31f6035427d774795d57991a8e9560cab93089044b2e78913ac4b2df07d. 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/DEGQ81504565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6c3396d64130475a58a51eb4f25f0c3651d81fe3b881c4ed487135405bdc43. 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/DEGQ81504568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be13b1a345e13248e67548aba34b9d6d3e0156a3c33b2130368e1dae99176a2. 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/DEGQ81504569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbe416d44ed5dc08196244d5ab225df7078a188cdb5e47765a644c2a667644d. 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/DEGQ81504572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3377dd01967a170b533364b116c4fa9ddb98ae5d4dde3be9286542e463748492. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DEGQ81504567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaa284b5540ce8cc219ef4b0a3029c298f8557378f7ced717071e11f7a5304a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEGQ81504571.
Sauna Ist Cool, Madame (Feat. Schneewittchen)
Navigator Wunderbar (Feat. Schneewittchen)