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 0xc37a6d5350b4c7a48190550858c8274ebf13b0600e88a674552a9734aa21f207. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f98671b-beef-401e-8951-04b545169ba4.json and https://artists.proofprofile.net/proofs/artist/0f98671b-beef-401e-8951-04b545169ba4.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 0xdc9040e4eaef068bb858e9ff8c30024f1621753f82df8022fbbe17e36058fb2b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN82222848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14663bb0d5f01f645b445ebc7e26d8462cb15f540b740f2898e582f4fae60749. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:09:25Z), 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/QZHN82247660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990eabb96aec3f232efb71e2f193638d4e9fa4fef65421037c4ce6eb76847e94. 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/QZK6M2242253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d6b4e2f18181e475107eb6d38228fa168f051dda79f40ba7f5d9d4a84c17f3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:10Z), 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/QZK6M2226953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d0fc0e7886ac9cd69fdfaef0c8e19d133ddf35ff32fd35c1276c03124b50e7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZHN92207814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c6d39bafd25455ad242e1863c8e85b8b0fb0fa65a53d9082b3f02bff4436db. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN82245524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e127b2c6ca9037fbb30b97406e2010621b6cb135cf66bce5e2e19134c3f080. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAGU2364926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebcfa657bfe8cfd0f20f23fddb75f219cc3e8dc93a30bb35e658d64ee7abb43. 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/TCAGU2364613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb8db0134bf0febdc90680d5e29fbc0ac05c0346c89a3a444dcfd34a7efa57f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:26Z), 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/TCAGU2371333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d10806d85a6f3a53e59149dd3b6a3fac791a403cc288a4af240c671f379ba5. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCAGU2374259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250b413cd06f5a020faa608776fdf1985865fb50a4ffdb0970b4bfcb0e858dea. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAGU2371308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7070b54474148446bd2bb6506d76460813a9727cb536635c869aeb12006a3ddb. 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/QZDA42392002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333f191d9a5a741d0a7e8f3ed6166d0eaacc8d558798922685c6a4c52833954d. 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/TCAGW2354579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d989430c5d2562e1817001acabd5e68adb0ebf5933ac0c9f3515544625f48c. 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/QZDA72304871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302f591aa998f8933ffd7cc5caadafc572469041f416d1718107dff94e0f6fa. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAHI2349791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a964b42ea1e30f4ff1d020900f95bda497495e57fc62723875a13c8b3babb86. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:49:26Z), 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/QZNWZ2387963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9040e4eaef068bb858e9ff8c30024f1621753f82df8022fbbe17e36058fb2b. 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/QZHN82222848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162a0fb856ef50c000343cc56748036c73b19fee421615ae29a1d0bf62c3f1ef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFR2563377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d6b4e2f18181e475107eb6d38228fa168f051dda79f40ba7f5d9d4a84c17f3. 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/QZK6M2226953.