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 0x11b58df22ed2147c92284b67ce1c90683561e8969fa5542d87bf1757f983d2e1. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c739273c-846b-4953-8615-58068623089b.json and https://artists.proofprofile.net/proofs/artist/c739273c-846b-4953-8615-58068623089b.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 0x291edf580ea94d6158721f9b5db6ceec5b5763ab97b36ec9ce01b76c75af425e. 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/CZB871708001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0ce32074e505775ac5b739194b36b8d29a66161828ef195100e5ca5116d672. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CZB871708029.
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
Iveta (Voyo Original) [Original Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cace5c9c0e4e6c0668a735c815edf173a589a1ec131f9f713ffced5e564f38b. 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/CZD712200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfe9a08bb11dcd40f7a872d8145d47bdeeabb70851718830cf6b3298ecc4815. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CZD712200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a41c291f7c39dbe3065263d492a90f8a5a618200d51688827baa97a4f987d2. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/CZD712200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7230ed2136ef5262f34b4a228f7978b908c4e8b7436f9fcae441c484af2f06. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/CZD712200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e99eb0135bd06fc47e7dc37aa0892cc06a9cdc5dac528cdb769557fdd945a0b. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/CZD712200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8650650757aff0baaae41aa348ebd7291a5d457c4639d6b3235cf8dbcbc8e2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CZD712200035.
SLOVO (Hudba k filmu Beaty Parkanové "Slovo")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebe4a3d6571c8e9e9049f8b4aac66524d23f3d4def3a98d3b12f5991a96240a. 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/CZA162200844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a5ac3ea859d2fcda8e1e9ed02e44a368356006f642b779ce98c5a5b5511280. 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/CZA162200851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd6a749824d31ea89097f5498fd1dbc5171c727fbc68fa855f51a91dde21769. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/CZA162200845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc454caad61d1bc3b92da1a4c4a7b165d37346730e38e9b315ff5161ab6b12a. 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/CZCD12400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d98c8333f9d337c6f7dbf0c135cb4329da7e3db2958446c0e87b005a88dbaf. 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/CZA167700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd2950429fd201e2ee1477a87f5cbfa90a21c4e9c420fb72f4c9603c2bf2276. 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/CZA167700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc22150b28410a6a8463058d289f67b3d75c6027867f0b7e0b538489d110eec. 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/CZA161505054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8a6bbd4fca76b3fea2cf78b646a4d5d004a40c2d1ca2e847d0c5346f1093d8. 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/CZA168100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1de7d30c30ed8f59a688d5fcbdce894d7eaf1a1d01f5e51be3bfa5e513ce1c1. 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/CZG591201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470a0856953175ffb16fd482feb848df86aa8fa036d5ce44a1264139c2a4ada5. 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/CZA161505061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbc6fce31366294456e7a1be4e6b06f77b60d940b5054e2825a1d8bd349aee7. 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/CZA168400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a1e7dd422457d58fb4b19136355b2351ebacd1eca80789276cb21023c4b027. 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/CZA161544193.