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 0xd852e708903f6b4e93003aa024439e0394894e9a38bda07055e4227a9d8757d8. Chain 2 (Bitcoin): anchored in block 953794 (2026-06-15T13:43:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1e1539c-845d-4b1b-83b2-7e3544acd594.json and https://artists.proofprofile.net/proofs/artist/e1e1539c-845d-4b1b-83b2-7e3544acd594.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 0x8fbf1b584c0ac27da8277d7a01e5634d55285ec25fade4b8db6c1450be811401. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/ZA41S2226604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab7765010c17bbdbc668b9105a4419dd0acb5595b6a15f3dd1a568962a8401. 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/ZA41S2300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcfadd8cf8219c2d8c7aac7fe46b64a7bb63ab4b432d145b84d29ecfafd6c3f. 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/ZA41S2300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8872f2c6788b1a24188b325256c0e3dfd68639539d590781346091330959caf. 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/ZA41S2300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0cf6f3d94c54c7dee1c67ef88488caa418f59bd13ea91dd24ab0a636bb59b9. 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/ZA41S2300244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5020c37aba1ec7e01f6c06845a6ee871e1c4658ca5a6175a8a46a8a7a64ecb2a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ZA41S2300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2cc2812e2f15a4b3dffe677a08bbc869be16dc7d0c9c06b7e75a229af20c27. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZA41S2300253.
Iy'ndaba (Kiddyondebeat Remix) [feat. LeeMckrazy]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01de44581a5b48f77a99b3837ebd219a95c6f4226d4b1f6d8016e5e92aeb4930. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ZA41S2300272.
Mr Simnandi (Original Mix) [feat. DJ Father]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef92b77001469f44fb77007aa300fafd1e5f5dd17fc405e9a2aca7b27d33a37. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZA41S2300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0034c604222ce9a9f644a37a15daeadc6bb69c18bdbecc4b8ce17ee0a36a6bb3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZA41S2300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1564b272778d1412da9ae0e7ffd7ca7a45506539e69a30351471ab8b6d0882d. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ZA41S2300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa228d6e881d290fdf6ee0a0167d6986bf445d693e856b22c26477812d7bce. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZA41S2300262.
Imortal (Original Mix) [feat. DJ Father]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd1a60af17c8320f9317f7139649402e94cf97c40ca6614a9ac60e1368d6384. 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/ZA41S2300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6629254a8654d4ac071492e050fba85072bba4eb13d37386a06f0958f951a1aa. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/ZA41S2300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993827ca907b8b189318b6bfcb8f070429964737caf766bb53d88e93b9e7c379. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ZA41S2300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f15ecd991978aed6217bb1626c0b5c8f72469654d278a4d987acc60fb73f95. 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/ZA41S2300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200f06df747341eb253a236197b0a44b2886672b8512361a1d0d892377eef0b4. 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/QZWFR2328627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6067bcca5ae321d3a6c9fada510ffc9f087b621f17f57bb785e8f037907dba. 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/ZA41S2224597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581bf58338eb421a61c4ebbc4e71f89cce0729edc1138dff9ed4ba4edd18dd59. 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/ZA41S2224599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd588385c2b4ad667d9e261818fec30cb0ce73c7009625345801b123cf0fbde. 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/ZA41S2224600.