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 0x1a64cf8385c546668622ab1b43ea2fd4746b39e2a2b646e03fd47ad70398557b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc4dec57-dc47-455d-b421-d36a088ece71.json and https://artists.proofprofile.net/proofs/artist/dc4dec57-dc47-455d-b421-d36a088ece71.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 0x7190b8dade3f14826a4d6c6f9c07064279f2af363297f464ddbe894001ebc202. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEUM72402386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34863349965fc3a1b0cc4c516c15bf011a7c003bec66a8d42aed7d55c215ca03. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEUM72408536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b322fb805d36316f64528d9721778ae0df6ac319b1cea2678d9f61b77ca2a3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:30Z), 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/DEUM72403532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440edb4b846716b79f3a41218dcfb1911d27490f9abeeaf1489a1a46498a83. 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/DEUM72408222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc87f9688c8f14b79c2d79f99bc37dd99f5a8a7520a195886bda839fd908ed7. 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/DEUM72408537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bc5da1b19178a3e5158d55dd6ec069e1a0e9bf84d0fc101e825f8652fb19e2. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEUM72404937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190b8dade3f14826a4d6c6f9c07064279f2af363297f464ddbe894001ebc202. 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/DEUM72402386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bc5da1b19178a3e5158d55dd6ec069e1a0e9bf84d0fc101e825f8652fb19e2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEUM72404937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932019de20872ce33b7f0e5e21d2b54b4a60b8068f5d49c1db4807b3b04aeb9. 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/DEUM72412495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440edb4b846716b79f3a41218dcfb1911d27490f9abeeaf1489a1a46498a83. 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/DEUM72408222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b032b0d65d8585b3989bc7bcb98d57bfa5d0f48cb1b8681f66a8d05f6c939a2. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:46Z), 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/DEUM72408535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34863349965fc3a1b0cc4c516c15bf011a7c003bec66a8d42aed7d55c215ca03. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DEUM72408536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc33450eeea67250c1f391b6dd0655c074498b18807f48802ce4920b1ef8a0d. 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/DEUM72413037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440edb4b846716b79f3a41218dcfb1911d27490f9abeeaf1489a1a46498a83. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEUM72408222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932019de20872ce33b7f0e5e21d2b54b4a60b8068f5d49c1db4807b3b04aeb9. 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/DEUM72412495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b032b0d65d8585b3989bc7bcb98d57bfa5d0f48cb1b8681f66a8d05f6c939a2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEUM72408535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440edb4b846716b79f3a41218dcfb1911d27490f9abeeaf1489a1a46498a83. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEUM72408222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190b8dade3f14826a4d6c6f9c07064279f2af363297f464ddbe894001ebc202. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEUM72402386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932019de20872ce33b7f0e5e21d2b54b4a60b8068f5d49c1db4807b3b04aeb9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEUM72412495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc33450eeea67250c1f391b6dd0655c074498b18807f48802ce4920b1ef8a0d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEUM72413037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f8bdc039b7d0716ec01b7b9ef5080dbbdbc967ce5ce387d2e684045c01fc6d. 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/DEUM72503816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7973630708fca0e9ababc860a2322ddbe4abf0e7acd383a7891d73d073a4c5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEUM72502983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440edb4b846716b79f3a41218dcfb1911d27490f9abeeaf1489a1a46498a83. 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/DEUM72408222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190b8dade3f14826a4d6c6f9c07064279f2af363297f464ddbe894001ebc202. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEUM72402386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932019de20872ce33b7f0e5e21d2b54b4a60b8068f5d49c1db4807b3b04aeb9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72412495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc33450eeea67250c1f391b6dd0655c074498b18807f48802ce4920b1ef8a0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72413037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f66ceda7457afb87b9cfa7db01270409343d04edf3be3bf898abb12813d779b. 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/DEUV72500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7973630708fca0e9ababc860a2322ddbe4abf0e7acd383a7891d73d073a4c5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEUM72502983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440edb4b846716b79f3a41218dcfb1911d27490f9abeeaf1489a1a46498a83. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEUM72408222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586e40abd30f4bf46b4f21ff612cc5fe9bb2ffe1949e0aa33645dc3037f5bf02. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEUM72504572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f8bdc039b7d0716ec01b7b9ef5080dbbdbc967ce5ce387d2e684045c01fc6d. 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/DEUM72503816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7973630708fca0e9ababc860a2322ddbe4abf0e7acd383a7891d73d073a4c5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEUM72502983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03440edb4b846716b79f3a41218dcfb1911d27490f9abeeaf1489a1a46498a83. 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/DEUM72408222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586e40abd30f4bf46b4f21ff612cc5fe9bb2ffe1949e0aa33645dc3037f5bf02. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEUM72504572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32060da53eb13a1fa3069d78625a852d046ffac7bf590fbbc4e009e1b61f7727. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:40:41Z), 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/DEUM72505599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7973630708fca0e9ababc860a2322ddbe4abf0e7acd383a7891d73d073a4c5. 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/DEUM72502983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f8bdc039b7d0716ec01b7b9ef5080dbbdbc967ce5ce387d2e684045c01fc6d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEUM72503816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190b8dade3f14826a4d6c6f9c07064279f2af363297f464ddbe894001ebc202. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEUM72402386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190b8dade3f14826a4d6c6f9c07064279f2af363297f464ddbe894001ebc202. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEUM72402386.