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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2cd5458c027a29440ec104d483725fc6d8ef75350addb17d10074fe4dda5e1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b793742-79ff-4fee-8bb0-7d47bed19d32.json and https://artists.proofprofile.net/proofs/artist/0b793742-79ff-4fee-8bb0-7d47bed19d32.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa970fa63d24d234aaa75db51cd4df50df7b9d6dfae1c067448229bd4e4cdee59. 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/DEVV92300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3f5bb7dfd65a36b91e22c334c6b184278960819807215da0758816e56b1d49. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:26:04Z), 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/GBBVL2306484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49704b22f0c31a65aa808355635ef1f992ba09e26885013b8a9fa46ca89b4ff1. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/NLMH62300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb384c032e1269cb16b0c8dd9fc0c14d7a4229819c9d72a5a1591f9ee2bcc6161. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DEH742328587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271a647b63cdec7e9da7d1ee73cc0b3b0445f7679eb335aa0f12d0373e5a1172. 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/DEH742328588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e45d7716be984ff4ddb61330fdf69674034de2b25acd7ffa0d7c11d3121b917. 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/DEH742328589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8e740c4126d304a35b30ca948249ee788ed46b4c75dfc422766905d83b7660. 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/DETB32400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae4a4554448b3480e84f36439be8baf263122d1540565bd259b0b8b22023e4d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DETB32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc5a20d760e0daf12768b5bb930e53fd318727261e0f6878531a5510e7a1dac. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:15:05Z), 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/DETB32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8016f19074831fb7bc4970fa90ae43922f9f9504bbfd52d10a6158b7cf640f. 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/GBBVL2406661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2d94e3dd99191cee64a2ccef4ad5c81ba4b54fdedcd285a4bb36d92d1cbf67. 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/GBBVL2406662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf803a86e1db16297ff76c144968042d26bf027afb3ffd7fd37bce2322b65ae3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:43Z), 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/DETB32400611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2365c37414996945c8c74eba3bb72034c28e694bccd2f2a45efd1a9d548a4ffc. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QMDA62433430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f8cadb10e792df98fa00b0cf0c78387124909ccdcbac53127e418acf2e448. 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/QMDA62433432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd0f3ee6d09a52836b27f7a7b7a029095352c1c2c9709720560262d6bef7184. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:10Z), 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/DEH742438608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9234ac0ecea020f98d75ffde4515dd67676f25721e2e896ec1305e95026e028. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEH742438610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b169eb734f71d7b2e8b8bf5d0d702b7014e60f6e8e6b7ce4994e46ae24b1f4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DEH742438612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ee50d73d297a709b9c4e6fd730f54221ca9744e20bf698d63db4b59712157a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DEH742438613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda23049db3f89f2896e76110eced971eef8f988f3f247ca7ecc0dcfd3c1fbe74. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/DEH742438614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e0a8a3d6ac4b4aa2b25c5cb830ba8eb5fd22df02dcfae4ba9ae2b227d024b2. 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/DEH742438615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80960a74b6f36998d6f08f34f92666b7eed6b6a035e88cdcb0760789ab89348. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DEAE62400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf31d4caacd10e70750fab264004ce0a853e0a26857f17fdbc7acd43e729fd17. 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/SE5852503001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb63fd9be366a01a39187e30a50c272fba2accb73c9f1030566edaee1df994a0. 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/SE5852503002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e1ea412c7a131f4501bf9ba3d4ea0b46a82ec8882271d76be66a5a9e2d4101. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SE5852503003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de0fa2d2c90c25ce3c2a6bfc0dd66e3037efaa1d95497b68d3fcef13a324268. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:01Z), 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/SE5852503004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f314589c12e28d606851c402fb8a86c1026a8af3f3d7c64e15f388ce0cbead. 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/NLCK42513393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993311b74dd386d5811fa68353645dfd853d2dfdecfe54a915ed58d2c2c620ee. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/NLCK42513389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897cf228c3b2ab883f7f58b734f6bfba4fc9adee2db8ec2903110371e3d498dc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:23Z), 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/NLCK42513390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205360ef2fe27f4f3f2ae2c58c60fe273a9d388a817449f2df3186fe606a2b07. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:58:23Z), 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/NLCK42513391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87594957ea07e46ba97b6c58fda5a12cb9a914bc2f98ced61ca2c905f2366c61. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:23:50Z), 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/NLCK42513392.
Global Underground #44: Amelie Lens - Antwerp (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1255f7c378d42619cad10a9f1d98d3f15fe5e07abe962e54243731709a1c92. 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/GBHFW2200069.
Global Underground #44: Amelie Lens - Antwerp (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0705ac8ce8a19829bcfd4053cb044366e31e915473c3eafbe3f91f08c585ad. 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/GBHFW2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a3248ed14c206a7683b07f3b3c457dc64afbe8c1e574d1dfbfa104a4371028. 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/DEH742334631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4dbc5c519048a2b80d11064fd94dcf4f87379bb1e21afab3cae9b22a6dc30f. 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/DEH742302375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b8e0b55da44900bd351c1fdf7fa50933349e2fac7271817d80de87761d15cc. 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/NLCK42421687.