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 0xa2d9ce24c1803393bfa65e12d4a560dcb7ca916caf70a7537b8ee578a38837ce. 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/673a9359-78aa-4150-b8e7-a3f2008eb77c.json and https://artists.proofprofile.net/proofs/artist/673a9359-78aa-4150-b8e7-a3f2008eb77c.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 0xba53e3de88cfe5473df1638259251f0c07d68e710fd6dab973e276d260d36814. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:12Z), 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/RSA222091582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26678760f69d7922a614acec5886ad86e397aa141159a76cd99441112bec763b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:45:58Z), 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/RSA222091742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f805707ff9a7d025899115b094f9ee0c7f2c4a38bc799571179cb729c72656c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RSA222090316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c85f5d1ebe5c857cc195a04205b33eb08640620f4b6d05376b2bf217a60569. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RSA222090317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eeb8b2b86cc8da0a6dbb4bfed0438a65b4eda0abd73d5dd9f52ad138b94917. 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/RSA222090322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f70b7431148340493eecedbd58b120a9ff78d3efeb197d4cfd361322b82a55f. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/RSA222090331.
Tockovi Se Vrte U Krug (Tockovi Autobusa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451efe9d665b17cf4d757bdd019aabfa0d376eda41b139651297f31ec36c84b1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:59Z), 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/RSA222090350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1391e29ac82b1cdc88fec46a5eb9c381391563cb1ae0d7091aba5a218959b9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RSA222090356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d210a48e031ea8529332b7b79b49767a9b415cb2b575e8148592ad29de5684f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:41Z), 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/RSA222090302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9a7637bcff3d191b22cb315ee14d6192b6fd080d00f9436b84a72b1b54cb25. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RSA222090303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f5d66529124e7febc46392cb876a27cdeaf4de9888f818d6230391218d7fd7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/RSA222090284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008086aa9aead9c3e14fd2d449c120c0bdcc351bfac99bbb6fb8b7b3b71ec0f3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/RSA222090368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619d343d6f2acbf192527037f9c2c7593c102d13107867ceead259264726bf2b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RSA222090336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0536c96a8d76863731a2df9a8e82c0137bb3a3188a0aa440c43525649dffe305. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RSA222090280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a04f95ec40bfb5168915cb5107a34714eb7126453205ca65f77c72e0de147. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RSA222090283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f1c98f2056d33dd5d092504673b2a6c34ba70bfcbbb37551ce48b3d95fdf9c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RSA222100426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da7421a3e73f9258961a8f2d3df539ee0b1ed2b99e23a71bb9a096009304359. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RSA222305128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e31f6671464ae3e3ac8933f6fb712104f6660cfd01a0a68e693f133978e8f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:44Z), 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/RSA222307511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b019007f9d87454c8ee3bdb00c20fa3c6f068f751eab61888f640f7adcb88b. 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/RSA222309817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e08555400d437831e678c883b24e118f02bae8f63eb48afaab25b2d1fc13a53. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/RSA222313521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50110c7c9050aa7056e2d5ac1ba9db737e882da3e95afe258ac94a26722ab006. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/RSA222313809.