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 0x7b9cceead279dce0bb1a5d4db852aae78b170868cb53790cff1147c146852079. 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/51dc413a-1195-4383-95f5-f2a5689381d5.json and https://artists.proofprofile.net/proofs/artist/51dc413a-1195-4383-95f5-f2a5689381d5.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 0xb557cc69034b04d90d14bee581339da7632d5a0eeb4d92647192631ef58d1a17. 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/TR1670600966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560c6392396ea047d2588bbf95c824bbfcda221f5bbdf44da195f9cb41583bdf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TR1670600969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0771092a3c10b3b998885d8d5220a86733e958cc46bfb46096a30ff8390555. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TR2180610301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f78804d30642f923d6893966940bf82d88d509d777645464d9e611e7ca0b9dd. 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/TR2180610304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f96a78cfd03711d738ac8fd3364e4d93c4d8367a1eb786c07fc14731b11b53. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TR2180610305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d95a43d3fef7dfce5cd91366bcd3b2758404142c62b49fa2bc60f62368171. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TR2180610308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76af969b9dd6f6f2272f9d649ab9f9fa3c3cd71566db0ffbf4b3a58625e7136c. 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/TR2180205711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c80833d66feffc4dce417f64bc559d20d57d9ffdcf4b12bdb067239fae8e7d. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:06Z), 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/TR2180205708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef940ccf9286994b4547ea157683a23c2aaa30d747316cb35f621617a5ccbaf. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:49Z), 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/TR2180600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6162b1f7e2f8738248a0f57acdecc54c4e821b43e72503f1fad21490b1a295ff. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TR2180603002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4eeafba350566b69a0fad5404f6bdb7d70d5c7bc2b4d37c5bc67f2f735eba2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TR2180603003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833dc8f13d5518b9774d0c28239daebbea9ab62d0f4d1a122ca842010149d682. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:08:06Z), 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/TR1670600949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d13f9e3174313719226dc02d9d28da913deab675cd44e29ae8cf7828efbc1. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/TR1670600953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401aceb08070edc9b0fac4f468ee6228421706980cb0c0af8dad6d8d823e18ce. 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/TR2180804801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4439cfc0e4ee4167b447afccaa90257a4a5c119e6647a8d816faa9a6815d1a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TR2180804809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19286a99e63ad9e00c28c4cd89bf47747219f5702fc2a13bf28f8b72d835b251. 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/TR2181111906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa11996e33dff57f48ab52634f82902cb5bbfe06986b4684a7e0342f8e211c43. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TR2181111902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506dcea20b5b063a0e0efab5d92c98b04dde54859cbaab975d1d780b0f22d2ae. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/TRADR1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa684a43045b61db34a920dc1c11e1484016f049a6fbb595f15bbeadb3e7527ba. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TRADR1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0868e0c5c87b232c9bbb8aff567e305a83c224c8527eeff54e2bc9e0775cd50. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:57:00Z), 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/TRADR1300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25700dcc5e4a14370509e8522be9866f1af8c086b65ba40ff4fed3643f40eb2. 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/TRADR1300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e7357bc1c1c1ba21304e65790454645b41d162358d73c1194104df4d1d3a45. 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/TRADR1300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70279f6d2698c296ea8643b9e3f26e60a61b2845eaf85e13183bf6c8fed88c6f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:58Z), 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/TRADR1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e92007eeffdd0b6b204c7dd2a1ee227ca435a13a714b3556fb7c24531568aa. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TRADR1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aca46a961b6719d320a745df96726576b35c5adb08b4f659227cc0e406ec22. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TRBGK2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84402195bc48c9b2602956e6cb9b4abdf4c5cae5c346bf379ca1cdd0bc4d4c00. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:01:05Z), 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/TRBGK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbc4192d2b1bf9bc297ab0ecc8499c35fc8c42c84e31d98ab22d40a90bbb44b. 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/TRBGK2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ec0b98cc7d4210a5a996bba9fc2b24bcaab0ee7787a4ce83ed34a98d99334. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TRBGK2400002.