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 0xa7b3593723ae62940d6f84ae1f155c350660be711a45df7896c25ef60998b4a2. 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/87800282-4e2e-43d1-8554-648e93bbeaf3.json and https://artists.proofprofile.net/proofs/artist/87800282-4e2e-43d1-8554-648e93bbeaf3.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 0x4481b1069964f4a58a6dea5fbe5e05909aa31d09bdb1a108f52e5b49ba94eeb2. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GZFML1808110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b431bc49c0df130ac811e891ee75208105ae99afde3721fed34ee6f08aa46ed. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GZFML1808051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf345f90c33d5de44016112602854d6d2addcf8a1670b9d25e2456a3ebc0f113. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GZFML1808052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775a88bfabdb965cdd51f15e13ccddead8f79d6d86efffe57fbfd359e9600db8. 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/GZFML1808053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b251f04aec140f168b6711bb43d889d74f6f5ae90fe48f21945a2aa09c35496. 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/GZFML1808054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e123550dbfbd638b1108aca6a6cd206da53117be592fac007561a6dc76016a3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GZFML1808056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b49098f9c9171899a12da526a685c19be51276f2a4522a79120b7747a188050. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:20Z), 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/GZFML1808057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38545cd77a8e9b18e1b8229b6d560f3648279682ac791f33e21d28ac1886af6. 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/GZFML1808058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771ed904ca2024dd21ccd51a35cd58f6ecce3c3b442e3781f4b687bae3b0b089. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GZFML1808059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc7b00a400961e14d14b9431fbdf50894f3abe9191ed6525a9ac0440370f1c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:17:37Z), 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/GZFML1808060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab895d039a40573f2bb595dbf72a146ef27670bf86564a7f47c49f06ceaeb96. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:33:43Z), 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/GZFML1808062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd90a8333643972dfed1274ce0294249ce56417e3ae32724a22762078b83736. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/GZFML1808066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6c40a94ff7bbc5f3085773dd4120c8105ea42e7548c45b538ae34fbc0723b. 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/GZFML1808074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87826c7954073870518fc78ad6f27cb27bc7487fd046ab13d3c01dddfd3600e. 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/GZFML1808075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f975c94778abad109f591e6e2b0d26b4c711048d63f302db72aeed7ddbab78. 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/GZFML1808076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf345f90c33d5de44016112602854d6d2addcf8a1670b9d25e2456a3ebc0f113. 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/GZFML1808052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775a88bfabdb965cdd51f15e13ccddead8f79d6d86efffe57fbfd359e9600db8. 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/GZFML1808053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b251f04aec140f168b6711bb43d889d74f6f5ae90fe48f21945a2aa09c35496. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GZFML1808054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84d17ee72b65836cd553eff1df4675e701b96a591df12815cfd87eb62ae88f7. 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/GZFML1808055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e123550dbfbd638b1108aca6a6cd206da53117be592fac007561a6dc76016a3. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GZFML1808056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b49098f9c9171899a12da526a685c19be51276f2a4522a79120b7747a188050. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GZFML1808057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38545cd77a8e9b18e1b8229b6d560f3648279682ac791f33e21d28ac1886af6. 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/GZFML1808058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771ed904ca2024dd21ccd51a35cd58f6ecce3c3b442e3781f4b687bae3b0b089. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GZFML1808059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc7b00a400961e14d14b9431fbdf50894f3abe9191ed6525a9ac0440370f1c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GZFML1808060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b93b811867defac12a35f16ee1e01085e237f89d3c5268a15a85dea4176b157. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GZFML1808061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab895d039a40573f2bb595dbf72a146ef27670bf86564a7f47c49f06ceaeb96. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GZFML1808062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a494427b2038dbac798e02d74abfcf529df313824ffc0defc42e7b1a4f5defa. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GZFML1808063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ad4ebd66a9c815189fb989a94423301ccca36ecc8f602d17cd71466eccb43b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GZFML1808064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838df4d79788ac1a669cfdf515d54f5aaf38060564afe019d6e87b6ecfb9f220. 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/GZFML1808065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd90a8333643972dfed1274ce0294249ce56417e3ae32724a22762078b83736. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GZFML1808066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad822507cdc8f03fd8115b6148789d3ab659c2a1e0fa9c081609e1ee7d9a1f02. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GZFML1808067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f03be7a42c0be7450b53d0fc17c8fde647b9f67fe4586286c581d5c6789ba2. 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/GZFML1808068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aa378be4f71cb0e6584b82e77bfce14f70f36f670d6024f3d85ed7a6861731. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GZFML1808069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4939e21dced4ba153504b6233d3f7be6167dbfd283e4ee8d6d229e6fca63890. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GZFML1808070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd8b7de1c16ea96cd9396233b81db6ff8830b99ce213999419c56fdd55c305e. 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/GZFML1808071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b15070502514ec4e162a510dc1b8d0679866df4534faa775b756415b3d2b85. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GZFML1808072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f1a6e6ce0f53a9a2485e5ea2ea352a26bc40ad404d9b78faab5701168719eb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GZFML1808073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6c40a94ff7bbc5f3085773dd4120c8105ea42e7548c45b538ae34fbc0723b. 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/GZFML1808074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87826c7954073870518fc78ad6f27cb27bc7487fd046ab13d3c01dddfd3600e. 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/GZFML1808075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f975c94778abad109f591e6e2b0d26b4c711048d63f302db72aeed7ddbab78. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GZFML1808076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82828fd6769460d3f2290dcbd51a966ab241fda2eced38a54a33f06424a2751. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:23Z), 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/GZFML1808077.
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