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 0xb238c4af0652c33cb0b01e2c40a1171b3f8d894556a60470d56dfccd915aeaa5. 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/56077811-c4e1-4385-b59f-824f09464873.json and https://artists.proofprofile.net/proofs/artist/56077811-c4e1-4385-b59f-824f09464873.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kołysanki Dla Dzieci I Niemowląt, Kolysanki Na Dobranoc
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 0xd102801dfb0fdeecefdbd6660efad72025b5746dc06897fa0573f536d4d517df. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:09:54Z), 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/TCACU1603357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da5d6a94665e35d61b27752bf37e69247b37b4a9eef5469530a2359bd4e494. 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/TCACU1603360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1602157f4fdd1e45a59a944ebcf2c13a20c8bd0a99c60371573304c824677c. 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/TCACU1603365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7163f7aa390dde1582ae1c6d8034d69e8bfa20b7155f294d927c6fe041776a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCACU1603366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2895a53a7711728a212e982d71495ec55f2447d5eb203372b5a3e0f9a74fa1. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCACU1603371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea763394d302822c67673965e026559a5a1243239578f8bee134681db869247. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCACU1603372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59f6f5933d63b5e5a60ce41ee404384dc373bca4d2af562e4b497323ce931a0. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCACU1603374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791637fd22be77cb30abc21ff9ed5bed3e72cf2ec33725c68991cbd62cc16246. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCACU1603376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafc3fd868fbd4e78b1b48a4b53f1e37558d898e54ed56ed408c19fb81b4d198. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCACU1603379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824f4c19e21ccdaf026bb00f1b610dfac507d8eb84b507256a4a0b8f9d668c98. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCACU1603381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c0dddd7cb07abe1ab298d300745a97f837b92a235e77e2cd4da65ffc5f5e98. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCACU1603383.