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 0xbc551366f5c2d10bc08d046749f85197cf76c788c23510e59acf55eb9c6f0b2c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e502c1c0-3963-48d0-be44-5603a32f74e4.json and https://artists.proofprofile.net/proofs/artist/e502c1c0-3963-48d0-be44-5603a32f74e4.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 0x1f86690f4a40462599fcdc3323d0e86cccdd4a031712ec30a283c3a0d5f119f8. 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/QZHN72369793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc910fc5cbba0100dc76e31e108bcb8722b31eb85e119dd6961c53a83690fa7a4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTAU2322955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99d0aa4f7186fdea298e12bdcff640864b56923a7ba6f9756ce76ae59fbb4b9. 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/QZTBB2362514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf07a33d546d9562ed520e52afd320d5e42ec60d7e3cfb674e8d7bb5ac43774. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZWFE2324244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d883493ab424cb247d172a722b9e151a20b8aadf86b0ff0468caf531e7067f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZWFN2383343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4ea46eda15bf3324ef37d454a47d6b72eb8f786a486ef0e45f0d06a6891b3. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZFZ22451505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeadf51c000541ec495134194c27f15aa9efd13f2cc419ad161fdea24774d90. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES52419589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c846d4255c049bbbd440b6a062d10b66c80e838de6ffa9f8a7fac086e75fa6a. 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/AUMEV2425419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3394f5cd5c3d3cc90657328c51f3d9cc3461551f714f5c7a057a928120ef5b41. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN72472555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045c9cab3b14a3905d6162725ba0bfcf8db233cff3ae4bf61bac5f1830d2744c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:09:57Z), 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/QZHNC2442137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caae3bc1ee98da99a6a2155f7bf0a169023c58d8602d5de565ad214369e8470. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6H2414319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09f20b47a1667f61c067fd68b075b78ed42de9e4869c654c1ccf46c39268614. 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/QZMEQ2491818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa180426eac7f31d2e34c83d95a4f4a1052871edae14381dbc56ba06b1bd9a59c. 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/QZRP52410340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef65c58f0c00234521b51f37ec66a5787b49a4ed0df00e6d5873c7e155da1126. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:49Z), 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/QZTAT2431336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d35496b067b92a9b2036959f04b00caf61d6374bcde81290d4c48050987f08. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTBA2439031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25509c3ea692b95f812a470af67af65f93665470ae014f818f55480ea996269c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZWFE2447005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693f6952711d74bc2c787737a51f1a0189614b44c9934272b29229666e82570. 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/QZWFN2437015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813781dfb10bcf95dd29c09e2832c3751eeb50f91f2c5a5a323c0bd3d3780696. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZWFU2469897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a1fe6070eb6297750bfd7c395e406f85ec93e559abc02a1e74485d8fb6615. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZ762468333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99a40a2f0b3b6234d77667d30c828e62186cadcd3c967547d6244ce2e1c8a53. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7W2456558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd013d6a00e110fc808812112f5bd608338dbea48bdc70aac08883ac573148b0c. 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/QZDA72563993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545ccdae5de4f2533b2618f02de3f73c69e19a20b786253edf95f030b51e6aca. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:25:39Z), 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/QZHN52537710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268f7f15d2cd324d7a2d725b9e48b1662a1ddddc0ae77916936e745c8d3cf5cd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6J2595040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd52785ada432d329fdd7f01412befa01be95c8fbe70e608fc8e76f2c0e2e108. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWX2506396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35a44a53207ede11e033a93cbe53fadfdc28a8241e173dcb31c5e0db3b18bef. 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/QZZ782562609.