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 0x3260eb9f822a1bf3e48d3771364e9fd5b425d14ccbc74d4ac5526b7c4484b6c9. 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/d04f7d8f-0989-4c73-b238-3c631dee24bd.json and https://artists.proofprofile.net/proofs/artist/d04f7d8f-0989-4c73-b238-3c631dee24bd.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 0x4e6c3a0a40b443aefaf8e811ee97f01e239ecfea98ff7738c187aa65b74846ec. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA42182133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcda677b72cd9ceae378082727654ad89a9928b12189ffa585d0fad6ea807f5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:46:06Z), 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/QZRP42186862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4900c57cfce4a359da6682696e95f913c28e75065b5cc6276192c72a7a1d8852. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:35:42Z), 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/QZFYY2228860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e2f8f05efe8b969f442c75b8003e2f8ffddd1a31fb58308fefe60a4c094cb. 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/FRX452261777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503f3466fb1b80794d07586aa9e662e42d2aa07b445de89d1fa6c436d3c66039. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:21:14Z), 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/DGA082229867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32a3df60937e9d5bf1ceef130028251a3c33fe06441acd2dcd98d8ef84a51af. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:27Z), 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/QZK6L2381743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb462cb2d4b10eca0fe5b3ffc331fccc208b93c02bd63a0b25c736bacd779e2. 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/DGA0Q2385025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35c6453f15b9ce37caabbf0b5befef065991dea962fcfce7157c1be4bb85727. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA0Q2385026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be835fedce74d7e3443bffcfc6359934b3c02ad5ead267636bf416f73d75feb. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DGA0Q2385027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0241839e58a570b4a469a376a8a49d3237710b79eb5ac983fe636359facd86bf. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:01Z), 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/DGA0S2445350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17a4d18d59392b4cb4e8baea4af9ed7bfd315ba2e169e90201937bc81ff0caa. 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/DGA0S2498657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1add9d3a411407b1a4092941d02847d2768afe2ccb5205bbf7e9598838aa62. 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/FR10S2553094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6169179dbba46af519a4387a24451be1a712b9efa054657dba712794958618ab. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR10S2588836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bfffe2b85b6d3631af0ce42150b466ea008865f18fd5799d239233baa36c70. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CZA232501212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc034ed0f8fb21bd05df36b26ce8d815abcb2f21cde63f57ea2d5e55d233edfa2. 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/QZZ662485318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ebbb8973979179d4bf3814de28a42999c5a43546a7d15f66990569bc708db2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB82290677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d1e211611a8bcada6efb472378e211c4069fbbe1f5977335e04111c1262151. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX202233872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d1e211611a8bcada6efb472378e211c4069fbbe1f5977335e04111c1262151. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX202233872.