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 0x07cebbd2ce7f3c1e77ca0f743db2884412355b2f6e024984e04786411cffd252. 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/3c0aec1f-9cf8-4154-992b-a953292bab7c.json and https://artists.proofprofile.net/proofs/artist/3c0aec1f-9cf8-4154-992b-a953292bab7c.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 0x90dc59bdab7fe4efa9229174eb7fefe7963e230eeca8bd28b2d5ae22933d21b8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:53Z), 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/QMFME1521723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bf51e815baaab72255d4a3507272ce2e692b86b94306574ff9f13e29179ba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARZ020800584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ff0ff8a20401d4fbc2fc19f5b4b90e2df504b9364876c648b4571a5b66a7cc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARZ020800586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301c0cab7ce1a64dfda41148ebd01444a0a7c1bc41fea12aaa219e56d3ef07de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARZ020800587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd504ba77295de55a432ce719a19aaa8e7f2358330ba5513323c3261359811d5f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARZ020800588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb5744bbe6b8a814021a846d6dc542972de38bfdaf5f72b24ead915b779df0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARZ020800589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003ee0c5e2b25a50746166d7241662160ccd13cbf7c3572ee895e9977b452c0e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ARZ020800590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b36bb2cb7f9bd6da9f82824413229ffb82451d9347facf9e3a5775a4306b8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ARZ020800592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf9aa3b8f24d076db8ebfe6a8774f4d809b92c631ef0055e18411fbca231c32. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARZ020800593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b793df338b4d6cff142eacdf24a1cf0c4c9d8f2a7adf9ac431425dd52881c40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARZ020800594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6534c677d76dbe7a1b557d458450c8fe3f216a235865da38413f270e4daab61. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ARZ020800595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5f5c02a03b310ab64499093efbe4cb91a1724e9e3cf5a945e2d8a04e20a905. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARZ020800598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44039d262fd7b4b43c40a5cf10cce4aeca4b9451bbb5fb821c73decdbbe920ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARZ020800599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda9e96bfa385122269e3e76f0154a45ce1f2537d575595c2d5ddc210dc8c02d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARZ020800600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301c0cab7ce1a64dfda41148ebd01444a0a7c1bc41fea12aaa219e56d3ef07de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARZ020800587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f14481599466a90177faad3540f9a900d77ee4fd4a23b806c7df6756d2749f. 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/ARZ020800610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f40a68bbb385775d053c1846f5e992e5b461c752dca2d4afb4313496782bc9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA370357024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52170bef47601ae6ffdeed3887cc53608cb2ba28174de5757063d430d1126c0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA370357025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf015ebc9bd502fa4c5414221d9428a2bfdc304a99d2384147074c67b741a3f3e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA370357027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5067b6b0a88a5b83efae5c1ccad9b3f99367eb6c6433a4219b217772b7a81b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA370357030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b764b7a999372cf97b19f546f631d2a9b30e317eeca9d58c7243283e2a199fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA370357031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef115327fc523147b83763d0219858866fa08ca8966f9283795fbd6be68493ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA370357034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf41ad496b6092dcd3d8d4285edf9afa3fd3c253e48bb7d4e5976caff69bbbe. 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/USA370357037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3229f5c477c7bca29f8cfc2ef2875f1ccef2c38d08bc96685c2edae5d0163cdd. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:18Z), 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/ARA100600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072afabf2b9f7cfdd3fdbeb107a808df27b22fe8c1b1594efa8d38181a61ef94. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:30Z), 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/ARA100600095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba91749dd57476dfc22296a78c12976374731956238290cb8c7d913bd7404373. 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/ARZ020800721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da0662c0801ad484019426ce009c9c163d97338d6e75498597c2746e0805d6b. 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/ARZ020800722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29d2c12b2e0f994a7bb1e035d60817857c594412e8c6b94f88c2cc39db327a. 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/ARZ020800725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23540bffab55ca42b28a4adf9c1e6e2c81af33a62623ab5dd1b806864d82d2e5. 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/ARZ020800711.
Aurtxo a seaskan - Canción de cuna vasca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe9e6e603b3ef762df806852824fca2c4cd8474d6bdc4c07ffaeec3dae15e6f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ARZ020800712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbfbf49b8d5af10fe68dbaa735a480cc230b3aadb66d1ad7af9b8119636835e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARZ020800713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b766c071f13b555ac60d4ac67808ff02aa09147203202cc4d48a58abc5f574. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARZ020800717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066b14145c058bd1d30c5c96cb1f2ad4b1216305c20bc46c720305e885cb59f3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:32:25Z), 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/ARZ020800720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539305c2fde94f6ee2c326d488abc67651ace2357a8003d738d01bf40d7fa178. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ARZ021002816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57ac1ba5aa4731aafec891d714a1352da41dab1ebe34ca68ea6419d9915a33b. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:40Z), 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/ARZ021002818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98a3abf693b13ec9c217817fbc11fcba6613131ab41d33b6635ec86eccd6d0c. 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/ARZ021002821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0149c0ad9f1236cb4c6c51c100f538b81da5f97c8e43f7f2a35517267fc3a52. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARG601000367.