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 0xe6fb680f2c563f1a41fd4519c20af83c037702bb0ade588add8b7442f36488a5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37696734-d26d-4e55-8ef6-72de6a3e5d7a.json and https://artists.proofprofile.net/proofs/artist/37696734-d26d-4e55-8ef6-72de6a3e5d7a.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 0xc57f14b36136b9dab5f5c6107842a066df12291e9d0a01ef007b19bb8888c6b1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:37:03Z), 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/INR321700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec9200ff6918bfc70e5edcda15f371fad82cb03256225037b7f42064576b8d6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INR321800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42170f887b220e30f308167344123b06d9e196eef5f6ed710b30cdbfb16a313a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INR321800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d1193f9c69d2348105622847d8268c73ce029908db60e31ab4a53a7903995. 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/INR321800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eeda20c204e11ffe66e4566f1288d1617eee26a80a382c4add159cfb7c5995. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/INR321900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec9200ff6918bfc70e5edcda15f371fad82cb03256225037b7f42064576b8d6. 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/INR321800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bf68e96b0e53a01809367168bbca7cbe4e7b8b15c1b7ab7054892f09038ca3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:32:02Z), 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/INR321800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b580c09af8e5d97e23552db721883a5f80aba94d4276c6f29b5f523ad65483. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:32:29Z), 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/INR321800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f03d591e9387a21916b10cf9e03ddc4aaee58f97d70328409627fdff310b0b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:36Z), 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/INR321800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1372bb59f9f19521c077c4a0d97ec81695a969631d4b833775535665b7a798ed. 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/INR321800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0e83896b51042d11ef8ac5c241a9e0d4ffd11b4becd31795c811addb131b70. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/INR321800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42170f887b220e30f308167344123b06d9e196eef5f6ed710b30cdbfb16a313a. 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/INR321800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d1193f9c69d2348105622847d8268c73ce029908db60e31ab4a53a7903995. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:20:29Z), 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/INR321800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eeda20c204e11ffe66e4566f1288d1617eee26a80a382c4add159cfb7c5995. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/INR321900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7969e99787a5f69bdd8c6cac34f530e1d13389a169d8cf749a188cec666b18cb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:23Z), 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/INR321900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf627b57cb7d4dde51522e8d337f18bbfe9cc07bb338da7f15fd46cea0055eea2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:55:26Z), 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/INR322100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a64c499cc51b383b72508ed111109257eadba212f84f561bed7884210e03365. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INR322300087.