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 0x8b03d29179117f79107bd6d55f195b2501ac2e103c9bf50ec1745a607c8755ec. 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/e2f45caa-7a99-4d41-8cbf-161749e3f845.json and https://artists.proofprofile.net/proofs/artist/e2f45caa-7a99-4d41-8cbf-161749e3f845.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 0x98717fd438b3dc2fa1b73c214efb45b2a25412fe679efd12a455a4d26d3021d9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR96X1972132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695abf54322aa6837994862a21a6fd54218abf6cf63074119856ed6d6c6b6a16. 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/FR96X1972133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb063d8b9a9fe7eddac96fbc73fbd9b3033902a5993e39084adeda76e1b995550. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR96X1972134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558cc35e657f3bd2bb11756b97b23b610048484105a7621dfd29ffe17ed2c5ce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR96X1972135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afd1e9244901d0238df78f47fab8df4f77843314ed074f6b4e88f2b3f419035. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR96X1972137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1be6a7cf4adb545c49d2df5d24a0e31d1e84a48bd336ed12095197a2c0e58a. 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/FR96X1972138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ba63cf7cae556885b354eb4bf49e8742ce56d710a9ba1a5edd02e8c63a6b4d. 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/FR96X1972139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643a88446ce1aa91902d651400f8c00b12d8ca6e060bb89eba0ec36cd112670. 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/FR96X1972141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d890a2317a7001ce4868c72edea642798b3706d05f18c48dc6b319ec446aed2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR96X1972142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa540e064344c3bc3107a22c37a1dec1e76836a897744e6be4bfc104d5957874b. 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/AUTK41700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58a20998de124ed00a1c11dee86dc9e3714206abe2638ec1de1711559e33a7d. 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/AUTK41700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0771d0d579957fbcdb0cf38ecf1db3fc29209cb2fdd50c591a2ef9ba1758b23a. 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/AUTK41700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e8a28d2c95674c84377535f0451d1b3c9a490e9084d37f62d4b9c5993d0ceb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUTK41700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2257bbb3fb3c9447c2dc0e44c46ac2c35f1b558afce793bca57891570b3c9405. 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/AUTK41700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d547ed917a2d765cbf79cfd5a75d108e7ce6b3958a29d8851ddc7e8c465e7d. 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/AUTK41700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb174e42a36ca811aa6832071a23ae39186b0b712a57398b10cfa0c378a566f03. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUTK41700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dea55f415550d62cbf9baa8d23bec48563beb47736b3863d7009c3c9b287540. 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/AUTK41700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9991344d4407a3e8887a91b8017b115d7ff95115673e4a5da560effabb4bd4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUTK41700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bcad117e577c8d6a55b4760066078cb0a0e2bf5b2407fc6429e2f6734d26d9. 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/AUTK41700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c1c32f79d467aba1dd40b6b3095a43d826d940b4568c1d55e8d04cf5c8c9d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR59R2499703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c1c32f79d467aba1dd40b6b3095a43d826d940b4568c1d55e8d04cf5c8c9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:52:37Z), 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/FR59R2499703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f399a95c2d2c2bdd3c8d7b31a5f15f79e6172b49a58273e7d2330dfc7fc1057. 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/FR59R2119074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa540e064344c3bc3107a22c37a1dec1e76836a897744e6be4bfc104d5957874b. 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/AUTK41700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0771d0d579957fbcdb0cf38ecf1db3fc29209cb2fdd50c591a2ef9ba1758b23a. 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/AUTK41700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6d7b15aa0ddb25a1bfc761c5a5141b89764b71ab85f671e3d7822cd5a7c4bd. 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/TCADC1773068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6087f335b5578f0a6789a9972a25f4ae38d01d810586471fc3e71d00719e1127. 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/QZ4JJ1652902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3938872fc1e3d9450ebfb2534323f4a27c46ee33c877b5c59aeeb4f109a73b. 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/UST8K1633622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bacd86957dc344167e458943f74bdd4d36d9178237ebd717e7128547ea792bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACM1676062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee99d1edaec64c61762e77cc9484a66cd5910dc901f317cd85381461ed2ce5f. 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/UST8K1633624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47ded5d07f0d43d5521de00720944e6ff1b8bd7ce4690c4d8f2e42680a1b852. 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/TCACQ1661616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47ded5d07f0d43d5521de00720944e6ff1b8bd7ce4690c4d8f2e42680a1b852. 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/TCACQ1661616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bacd86957dc344167e458943f74bdd4d36d9178237ebd717e7128547ea792bb. 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/TCACM1676062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37183662e33294cc37bcd9f33ad75316bdeb5f30ecb4765f107364059f167c5d. 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/TCACL1505526.