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 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 0xea3c3f8999eead6508275d089fc1b9e85aa5b5e9092fdb2a75fcb24cb9798d6a. 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/ee630338-20f7-4612-92e4-adbffa857ad0.json and https://artists.proofprofile.net/proofs/artist/ee630338-20f7-4612-92e4-adbffa857ad0.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 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 0x50a9a20bd8aa707b42bc6cea3824c4bd8887b6b9a7e376283d65c6e921b43146. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ATK220100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e424a8f2bdae98e03251d4ccf687a5d84590d9d2f0428d533f6d24de65df7f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ATK220100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dd974c8055590e912ce78d19f73083e5c3bebc82121d2e4b89f00d2c1b2e8c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ATK220100389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e9066cf90d11247d16f7241e6678e2cc24c86adeb3914085c3fdc86bc27a58. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ATK220100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2da4aa79b69063aeb341a2d00b2ef87b12e982f6f7c6e37ee70d1d61b4be3e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATK220100391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21ec0c9b9d177aa92746194bb23911a33d844d03ac37d48c3325ac9dc49b7af. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ATK220100393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a08c2b7b1a3b8ca58719a93acfce89fff25dc95b972307f9f99fa176fd190a. 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/DEN120304866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c30e2dd705cb7d03fce28e82fbe56b77720fa9cfcbdf9a11a347f6ed1ffcc4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ATK229700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38abe482b57ffbce9a0ee3ad26d0ea27b585e299cd067c4da2680439f626fe54. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ATKB90610721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3964a0c036fe8f670fac61cbb82a8b063046563f787c0e4dc93cdde0472970cc. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ATKB90610726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c30e2dd705cb7d03fce28e82fbe56b77720fa9cfcbdf9a11a347f6ed1ffcc4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ATK229700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19688d6c30e33f09c4d96baadecbac2688d86852635798d70713fc1e76f0ef5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ATK229300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309eae22088f58d0b020117e4a95e86017d1a35b81ec4e4a576561e8b8721991. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/ATK229700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fdf70550b56be938ec89cbb3e3bc6b3247ae6f4186937833f30fd31ea139ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATKB91302006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aa5f85eee3e91c4910cc7b6312f1fc15d3b059b8e13a94695cf459318a1a6b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATKB91402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dbf2aeb3c78141a26d53655ffb6007f6ee54ec4b20ae726a594e6f44fbae61. 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/ATKB91502002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc182cbde02944aa4de373c6d52e1dd3593dacf5234a2a8fd88dd14101c25f04c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ATKB91601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1418ab759619a0023fc095516c475115c21ca068f319d38165fad7ffbbb4d977. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/ATKB92003001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55910d3ed46cfb38003f1d4ea424c04e2f7bc11859eb67a82ab600a399563274. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ATKB92003010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0287901c5c7d442be68306ec3df377a5b90795cbdc1affb678637378c8368. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/DEH792217101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15132e254c4b5ba3bfefc8e8c8cec4bf37c6cd4898a63963cd503b38daed413b. 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/ATK229501051.
Mia San Österreich - Hard & Heavy Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe986035cd6b1e423e702b2bea79e43eea38b3dd3ea7dac6f38f7a6be187dac34. 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/ATSH62400141.