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 0xff5773cc4ce357ad1d7f2b224698a944b23638966d0260a6ab0315c23ba8e45b. 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/458844e5-e3d8-46b1-a74c-967f3f8c1d35.json and https://artists.proofprofile.net/proofs/artist/458844e5-e3d8-46b1-a74c-967f3f8c1d35.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 0x149d3b6b62b7390095fc894aac85186dbaa007e13181bd9fdd459df29e72abbe. 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/TCJPM2023311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37644a8c41326e2344ce88f8d6739a1e034617596af6f29937662af5130ec12. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPM2023308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed15c579b2888684bc9056c753abbbdc3d16c3650726aba35319cfa82ad9e1. 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/JPVI02101414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a175bb13c26a8bc032a0a41e77069b86af9b1f2545c80ff2131637097690aa1. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/TCJPM2046810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf483059ceb221f690c080ae9f7a10d79676055458a1bec6e79a6413bc862c976. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/JPVI02101409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656c3bf3637c596d608d361fa3270b72636d9c1afe2c4852795a640c00f5d47. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPVI02103245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbdcaf24ec0439f05e0331593aedec9fdfc6fbe893a458fee4d0ae0a7915613. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/JPVI02301063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d430a455e42bc5274d8893554e9787363b4c89a9ac3047c9a4cf1413e8938d5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPVI02300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0480cc5c7b48458bd7e6e8943e545ee4da5a07358408cd55c4453ba63ca6a9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/JPVI02202796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc656c3bf3637c596d608d361fa3270b72636d9c1afe2c4852795a640c00f5d47. 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/JPVI02103245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77615e39cf2c60d02e0d847edfebf832dc78bf1143bffe0069fbbb8a9df08580. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPVI02203705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9500edf851206bb166cef808f8bb8eefd4d1adc588ece4bdccc94d1e21f50be. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:39Z), 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/JPVI02303595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd71c032f379c31260aa43cc8ca1d03ce7bf42ee9065eee14f245639b1b895c1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPVI02305189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72038f37d3ac1c9ed06446f550911f1181945b409a8a30674231718e61863cc. 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/JPVI02402026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72038f37d3ac1c9ed06446f550911f1181945b409a8a30674231718e61863cc. 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/JPVI02402026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd71c032f379c31260aa43cc8ca1d03ce7bf42ee9065eee14f245639b1b895c1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/JPVI02305189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9500edf851206bb166cef808f8bb8eefd4d1adc588ece4bdccc94d1e21f50be. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPVI02303595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149d3b6b62b7390095fc894aac85186dbaa007e13181bd9fdd459df29e72abbe. 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/TCJPM2023311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70d971f7a37abe5796ad299d3268d215891b3ade7b4f06e6c60a1305ca40cc5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPU902302261.