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 0x4266e0ea017b0e86661e65859ba76058adc0eaa741e223693d368eac1b3208f0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70adc472-076d-45c7-80b7-2fb950e38995.json and https://artists.proofprofile.net/proofs/artist/70adc472-076d-45c7-80b7-2fb950e38995.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 0xc4cd6702961d624d11948ebd5afc4964cf40d3b178fa3b0f28e307981e4837e0. 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/FIWMA0500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f7ab9afe761b3050aa5d7c6dcf8749822103a3c6e8c77ca0b5e65e054f54f1. 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/FIWMA0500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92bda358cb2d38f30bdb535fa4e93913cbcbc398a6474753d335f0b9fc0f598. 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/FIWMA0500406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4967f015e931f3ddbcc0c8a0d0e65f54a56f68888dcbac7da725fbdca3c63a76. 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/FIWMA0500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158c9bb92f610e235b97f5b3701f0485b0737c68637b003336c063f4aab9ea45. 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/FIWMA0500412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac7bcf378bbbcc298060ea1c3a9c2fa4e656dbc573176e6313c5794be46f2b. 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/FIWMA0500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680220ca19f3f59cc24b41a7802e781586a486ef458037da3ecf486f67ff54b0. 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/FIWMA0500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca346c05495d75268a7d3499bfd595b8da9cbedc1afdc2701f8b2ecf454829. 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/FIWMA0500408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e4fb228a50443129ada579de5f4fe6034f09d1ec2e7dc37e9d7a24aad8939. 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/FIWMA0500411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42457e89cead8f365b7d8116d984599a6716e68b8c00edba2034eb63d631b9a6. 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/FIWMA0500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28af983c198b32d63aeaafa3b2545430ecc900f374eb9647e7a30b5d75e8a4c1. 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/FIWMA0500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4503f959732e82883ec3d6b65fb93d2bf5ef11ef753586d753db08adc41409a3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FIWMA0500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8d68b355e310c941c83694177fda06b7e1d16145c82c4a8a7dfde4281a04a6. 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/FIWMA0500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cd6702961d624d11948ebd5afc4964cf40d3b178fa3b0f28e307981e4837e0. 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/FIWMA0500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f7ab9afe761b3050aa5d7c6dcf8749822103a3c6e8c77ca0b5e65e054f54f1. 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/FIWMA0500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92bda358cb2d38f30bdb535fa4e93913cbcbc398a6474753d335f0b9fc0f598. 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/FIWMA0500406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4967f015e931f3ddbcc0c8a0d0e65f54a56f68888dcbac7da725fbdca3c63a76. 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/FIWMA0500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158c9bb92f610e235b97f5b3701f0485b0737c68637b003336c063f4aab9ea45. 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/FIWMA0500412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac7bcf378bbbcc298060ea1c3a9c2fa4e656dbc573176e6313c5794be46f2b. 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/FIWMA0500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680220ca19f3f59cc24b41a7802e781586a486ef458037da3ecf486f67ff54b0. 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/FIWMA0500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8d68b355e310c941c83694177fda06b7e1d16145c82c4a8a7dfde4281a04a6. 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/FIWMA0500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83f2ed376a21996fb723c5478eded22bea38f2c35cfa85728300424ed080c17. 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/FIWMA0600468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616065622fc9ddbce0ae66d381af96305f97cb630cc228b36fd191af8479a7dc. 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/FIWMA0600469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc536d395546fadeb76143dce15414421d45143c09431c0d07102e9d24bc4cdc. 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/FIWMA0600477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53cbc5f47c84b16a31e924e57966fce7037b15770c0cbc09c0a370d6b35e942. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FIWMA0600471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72abc623ddfa1c285adbd032870922411d073801e31e98e790cc86e77f294f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIWMA0600480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07a8aee5e63c6326aa3b83d5e0acefea44fb7d3bf1e9243aed5ae5849c5ef62. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIWMA0600476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80e3760e5e17b0a6610c12f952ea04036f4678f26bdcc58c5fcb6d0daab92f5. 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/FIBAR0600220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e450598715811f35e3ea3528497b883bc7a7927b90769d8420ef60c949ff032. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/FIWMA0600478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd86900226d41bfa37dceab91b485f745192328ff70692d0f6d33f4e6dbdf5f. 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/FIWMA0700580.