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 0x2647e8f9580fb7d84335b195a3876980482296e9cc239417e6c7592403ab5e73. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5876174f-db6e-4062-a299-080bec114272.json and https://artists.proofprofile.net/proofs/artist/5876174f-db6e-4062-a299-080bec114272.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 0x3f3370839a93468a11fe336b84c6aff9e5d0daf961f6e31055afa184471c7006. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ARX189900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2514cccda77236956cdcdb6f108a696e40c4541fbf8faf9b85515dc2c80b13. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARX189900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3370839a93468a11fe336b84c6aff9e5d0daf961f6e31055afa184471c7006. 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/ARX189900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7121417dc98aabbc00723bb9809e9df4ea5e8fab296bcb4a88d11b49f11152. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARX180200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c9b47fe83066e441b0267d4b1b3829185a7f14fe92edf5396655fe8df3b449. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ARX180200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426dc1ad307f10d40baa48d6a2313f81b64988769c46ec3514afedef68c48c84. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/ARX180200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96acae9839d02a26b78dc875fa334325c380cfa420458bce08ff320ac0401f20. 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/ARX180200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c9b47fe83066e441b0267d4b1b3829185a7f14fe92edf5396655fe8df3b449. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARX180200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96acae9839d02a26b78dc875fa334325c380cfa420458bce08ff320ac0401f20. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARX180200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6321bf490bb35446267dee291f4bc2c1840a7fabdaaac02b3938213910bfecc2. 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/ARX180500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6ba6fc9a4e93d26d99257b91773c9180da9b421717931a34c58f804511abd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ARX180500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6321bf490bb35446267dee291f4bc2c1840a7fabdaaac02b3938213910bfecc2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:41Z), 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/ARX180500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6ba6fc9a4e93d26d99257b91773c9180da9b421717931a34c58f804511abd. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:38Z), 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/ARX180500008.