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 0x658477308b879940bfb857960759845fde5d79cac7eb2f58d4f48c9a4d2f5ec3. 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/a3d88d46-20ca-42bc-aa66-9d0878c6733a.json and https://artists.proofprofile.net/proofs/artist/a3d88d46-20ca-42bc-aa66-9d0878c6733a.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 0xae35b7864f5fe998ccc3b93120b7f63083b26025117f9da31ce2fda88ea70093. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:06:47Z), 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/TR0531202732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092be5d442a00efe73ef00646b33968e21b93216ad76f4e7a1ee43c939753548. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:52Z), 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/TR0531202736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb267b494cc3fe0ab803ddaa4238d7198cc73caee5d9e4d18dbc27582ee1f76e9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:23:30Z), 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/TR0531202737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf542ce550099eafcc421b61b2f88a4248702bafb7566d958d76c6271b54a4653. 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/TR0531202738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4be573b49a32826ef31a9fe3c512a9377b3c466e4c3e800ddd98c249c1f425. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TR0531202892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cdb2425c5cff57a6a040fbf247b39d8be7f636c643bd79cbdbb30e1ea66486. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:41Z), 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/TR0531202893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2612e47dafc88d3f2cbe993a0160f751970d45ad15850051ada353b12d31789f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TR0531202711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b22e391e93029f10d86bdb8da40f2f97efc85c8f18764fd46505b415b8acfd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TR0531202712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e155227433a969f2cad8e564c58fac045bf613e758d661070c41128b8ca1d98. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:01Z), 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/TR0531202714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacca5921daad25b3b6b822ccb0561ca477360204ab94791cc1713e1294772635. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TR0531202717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0625759b00aabc70f92f426574b18283cf12430ebda6ca83765d8931b5643723. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/TR0531202718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80919cc83544c7088bcb28ba81e3f47ebcdb7d8b71cd1f967ed71da22727e4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TR0531202837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db6d221ef76904c8f4aeb0535daa5b6b42d97a7c524a30d1283e6f495094fde. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TR0531202839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd348dec504e032069311b4abfe7028304fc0e1512de4bfa55f440e3102d7b52. 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/TR0531202841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fd8b2ef47e8bc378a2c89051991939588c1ea19aeced28376bc4fe606b2194. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TR0531202688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63495b5957f7821c95748ee3caf1e4985745ee9cc13282997b8efebaf4a14d9e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TR0531202773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbee7ca62a0c61ac6090aab8ba4ef6fd89d1a26a3d5a8b4e111b94d881b93da. 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/TR0220500733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80408ebad6e08162e44dfda0dec4816693eab96eec477cb16bf78cae846b8dcc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TR0220601535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba56ce48ef33fb6496c2826d0886e67be0b45ca848dcfd2dcb646783711d4ef. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/TR7441200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9a0002c8ad97f00332b7cba904ef15f43e6913e16ae9f89f0c7613dfa6b954. 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/TR7441200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8c552440e6f72d87df7897d5e8c196844c234f187a5b611407dc11284e6660. 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/TR7441200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db8f69f85405c962be63e49d9df8ec00eec7b0e432176fa462316caeb5a061. 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/TR0011500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373aac17a8a3197720ef041be5631a1388ce5b9f61f5b7ac07ec03d867839f1c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TR0531202696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ba6dbeaa30648ab35eb699cbf440a153ab114e7259a024ba88384c1350c4b3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TR0531202723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcb5076d7250305ef3ff8239ee0de357d0d923b0645e5743064abe2cd9b7bd7. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TR0531202730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aa0a9f4c21972fa870e76e6dcc66eda27a4246dd042f168b3183bbe6141742. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:10:02Z), 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/TR0531202727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0850ab6e95827e4cdd0e6b8eb9e9de5fa976ea4ecd155a864a94c2212f3bf27f. 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/TR0531202725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8270c6d23e95c9b72dd563e38506c2386d60ff08a7a17b510ca1996c251432ef. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:50Z), 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/TR0531202720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15704b385ae814a837d2bd193aa9a75d8b73d74dd7167a9d80a878de5fc9bae7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:25Z), 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/TR0531202713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a17c764c4004d969331ab833d57b7e4f3e63d401e6031607635305ecd4343e. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/TR7802000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82529c208f781db656fb2168c10200ba5d337308a80a7a19eb64402a1385fbd. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:47:36Z), 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/TR7802200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7254e2db7ba065f79c523f0822a9c0009c0cf5769477670ff6aa4ef68b9adf39. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TR7802200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea174df9a1aac7dd9b7b0aa1f7c9d4cb647ab28bdd4061b10d738c36d044a51. 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/TR7802200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb437fb3b363c2c65ae3b43506e916fded516b0ff7af4396b437c2a8dacc065. 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/TR7802200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1c65a6ba03c38e16422ce57972a2391641a6b244f5718f6a6e42c9e523b224. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:01Z), 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/TR7802200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37734b885022afe77019b475c78e1b34d5d03d6bc1506d7348275f97fa7e7f3. 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/TR7802200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6174b785b8daa64ba2361e77aea7b4a06e7d2baaa283cea7e72b67fe57010411. 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/TR7802200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9dccbcafad44cb94be10d267eda9b076d2bc0389d1a81ad766e733849335e4. 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/TR7802300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae723b9682a35b4e00dfac8c2ee0cc78499819f70ae0fbadc47c3d0f1862727. 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/TR7802300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b218036d891e29380d9bb35195e37682e289562323394b9ff110a991dd70236. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TRASS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d0172bc6696dcdc54cee86d2e52615aeec76061464097b666074aef4d1905a. 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/TR8571002954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce773dee03bbce806c8a4dac64208c9c085700c651a84249d2b410336527beff. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TR0010500074.