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 0xed6acc3712762868ceab766efcbfbda77dca5cea2fad187b33500c680146c4f0. 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/4ee656df-0ed7-4dc4-adea-5d39686ebf5e.json and https://artists.proofprofile.net/proofs/artist/4ee656df-0ed7-4dc4-adea-5d39686ebf5e.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 0xe16289356b0205b29595b157606c959aaf43803f961b948164199c6869bc7bc0. 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/ES71G2019683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfb0545346cc061df3d840a683ee4f3c0848f58540048b7faac16cc78fac228. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES71G2019689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe3132f07f439531886e643f4ec8698bc7df5c818d4457fbaec105c1a8a94c. 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/ES71G2020409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdceef75fa4853e6b778a967ab817670f98ee4e7c156d3d0d632029e18a163a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES71G2020408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b06b9117151fa942f3cf39b9705ceb6963351f8005de074df532af0be61cca2. 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/ES71G2020631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dba79dc4195be1b8401bec9b4b7c258f205d13979866923d653a4225f055b5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES71G2020621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d16355b71d61f7d5872128b8d7a49e83c8601010d84737c8649dfd7838a689. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES71G2022237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eea4fcd48489580fe25e76cffead48ca6c5c484ed97d4e503e0d0931ad7960. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES71G2022239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba3896ffe82f300e5f283d7511990c3869fa585907ee8c19035ba112cac0ac2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES71G2022245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699e8d297a6592073e10104d686baa7ac92cac2a4d28dd7164442cbe958e4377. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCACE1546598.
Canto Infinito / Mujer (So Deep Riddim) [feat. Forward Ever Band]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872e5b723ed10375d883b65b8c2e787bbc1f16829b761c779553a28ec6ac2c51. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMGD71900814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e5d6cac61da78b873c60a25de6602d90ccdfaeced793abfe181a8ebe6d3add. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZGLS2574013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e75ea3067f1d92de91a91d82bfbd47c2c71048b0b465237d7df57c5722ade3. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USUYG1077209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f939c9f85c9689c3b4f587dd0286f4d749515de28d6bc3135d888d993827c3. 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/ES6081741512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f0cfad8a3a2ba2f28be054f0e5ca74495962691d0659d1cb24723cd448c989. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/US7VG1630171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834876c1f50dd861fd79811b255a897db7922772e118c975ef82cbda1c557533. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ESA011603618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975f4c58f370a3776ea59d09ec4a3e7e45f4179f5a8abc6e719c33296dec7e5e. 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/ESA011503426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38b40005e763d03ca25ef92ace6123eb5118c770224c70df9a371b1458edb71. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US7VG1721411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a3b4c2f36401108367c9e371bd4297ddcd1c7a899f74498803aab301776d80. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QMGD71500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365886ca3361c54fb7cd1b72b266015eab3fc57ea5ccb19688308d2ae0bd573f. 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/USHM81739762.