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 0x2d8465f646730a54ab7efc4db1a9c076d997cae021d41f61866a28a0a03f3894. 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/abaafbdc-8929-4982-be15-959ff2cbbc3e.json and https://artists.proofprofile.net/proofs/artist/abaafbdc-8929-4982-be15-959ff2cbbc3e.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 0xaf2239153a1b9f0687d6f6138b0f507fb64ff275c6076926d0384e84316631f0. 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/FR0U91700526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892fe4db1dcb491b58496ec426e1e5f5df8abce2264f6405078dcb3c84b8964a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:57Z), 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/FR0U91700524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d24b07508080e5c0539177589b98782abf69c202ebac78d5de8acd0272e8cc5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR0U91700640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9244e40fbb1e5a307b64f24f4626e579022a48a6229ba29306196075d8602c71. 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/FR0U91700642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20b58828bb1a361671e08c84a0accfbf8dc9bc3d547d676b7a377cb86ba1656. 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/FR0U91700643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb934b9eb52868a6063a1c99f8222c2479f8276128e2ee1c459a85c8eaf35914d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR0U91701357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60402e2519c2a72aaf4ff4041b28d252d17bccd37560e110e13db1a4ddae8be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9W11803638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd99185fc6b6c467889648437515b0b8b291489db45f5fd3d822e47ae8d468d0. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/FR9W11807601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f25118a79fa07980f6ad87c0d61276798f1133690da2e1c915f3f09ac8c82a1. 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/FR9W11808087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60f351a99110c880e45d168fb9cfcd05d949d3b17ba675fba2bdecbdde1799e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:16Z), 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/FR9W11808088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2c52f7760850f6d75c0bade4f20ecf6a41629c69c315a47864565e03627140. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:40Z), 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/FR9W11808089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b413d7533f8deef60fbe547d34458d07775c8dbfcc677724a02118e8a6c6839. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR9W11808090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd55ed03ae55e3ae286f47742efef876465f9feb91ec21727827da038d4c31a7. 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/FR9W11808092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69966823de74391b6eeb3d92c74e867ec8d917e16d52c216f36be707db404c21. 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/FR0U91701130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127731e755f9d584b507467cc4ac597d5be80050cf5b8cc2c595e626aa1a97e7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:42:48Z), 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/FR9W11808094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca223215203d4c5e852bb123dbde8a4fd4d52ee572955e7c2a6f5734fa5d11. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FR9W11808096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4b910e23ec4fe846f272ee89df56866dcf55b0768148ff7ec4f8381c4a47ca. 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/FR9W11808097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d4d29ec21c1d743abc46e68a189cc2bf1582caf3c351a4f012a712090af478. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR9W11808098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06610d4131168ca619d12ea861a7eaac399dc18bf7db32d08032b95f94c4d4f3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9W11908037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832a4919fab4f4b370f757b5576d28a9245f9fbbefdb1e7ee2bb8743d0069f9. 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/FR9W11915420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1b46654e68b27de3692293ebb8c48627861775a25bbc767fa88a2451777295. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FR9W11925605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92db1f5b7c037d10d6e988e60128ef574c13a47e982de214eb8973ad1963e428. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9W11925606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06610d4131168ca619d12ea861a7eaac399dc18bf7db32d08032b95f94c4d4f3. 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/FR9W11908037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7c47a052437aed1f8058172c0f2d8313dbcdf92e1d72d72755ae7005a622b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR9W12220756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281c85c711a0215c585b8ec8ae40b58fd52b8ec9a1b98053e78ba71de5f3deda. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:37:34Z), 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/FR9W12226040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24c84b5f5346c731978425ccb5e46f72ca83bc709c06558529d711b21426449. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9W12230562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cd2eca8354dd6a0a85d2b017976cc83da4896e7229e19db3f456bc786b38e2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:58:50Z), 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/FR9W12245437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffb4682a83da7930a743bb14f8b910267308daa79e5d744aa2a2b2f4e9672fe. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:01Z), 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/FR9W12245435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c65be06cba6c20a004c25b7ce5b0a3251520ae96f81e9ab0580d7af66fbdf39. 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/FR9W12338622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a6df24d57688c82a59a07070fc04281ca7c41a36deb0a7c011b0b00475b783. 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/FR9W12338169.