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 0x0458c7666e44eb7b5aa4bbfcc8b54d42c889826ff93386ed1bc98186cfaef2f0. 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/e8db4fd2-3c30-42a1-8c8d-5a61baf088dd.json and https://artists.proofprofile.net/proofs/artist/e8db4fd2-3c30-42a1-8c8d-5a61baf088dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toss a Coin to Your Witcher (Epic Power Metal)
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 0x1426b693da6fe50706148c87c1391b449fdfe7a2cf20248b76822540e4634ce0. 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/QZFZ22021050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c901b497a266b84604fa2ad9c70d6accc5807c91abd3c764d54664b23cba1e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:01:58Z), 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/QZHN42092003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d0af6747dc707c369c6278106a1d55db2b83fff196db0d8fc481f1a2355d37. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZPJ32229152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f24649d28b642139148f0864d745bdbc4edcf5598dc200ba4223abc81af5574. 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/QZDA52156792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a12fe19a405f2406c1d26980534917010762ab74148eb316b2047b6e33ce1a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZPLS2153427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383662e8576ac7f29a4ff579c95362a81b487ccc092816345742250cca5a0869. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:00:12Z), 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/QZPJ32234236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7aabd2a19df7991c5bdec59da243d593907ff83d5f0edd4dec6faa7a9ce4d8. 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/QZPJ32253351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956764e8ed7f3631379b9a6203f3c21b49cc902971d7071f8d2f102d70a8f176. 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/QZPJ32253366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6e8bae85708c714f49fcb54b82efa701773e866e9a67853f592e6c8541305b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:39:07Z), 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/QZPJ32275997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dc661bf2db1488ceaa606dec43af890f234a19a22f0fb154c50bba5ee244ca. 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/QZPJ32244491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cbcd3ef1767350b99ca012c81a1ba9b381bb37efca67478dfb1f2e16b464f0. 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/QZPJ32285788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e43cdfc045438f55f6efc852b7a322e65da4e3d6faf5b43f8fba9ff4eb48e1d. 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/QZPJ32294848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ce99dde44730782dd697898f1c5b0c93fb8c8c866663449dd59b989e8547b1. 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/QZPJ32313841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12899e9fee15f5eeaea10ea75aab86b621b6638a4999542985ecf86102c8259b. 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/QZPJ32328155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969e7f298f639a233b4914f70288aff76e8f1b012ccafa4f694db654efcb684e. 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/QZPJ32345285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110dc14f577bf3370d91cd07148eac8fcc5be3dd51ab9debbeeb4045693568b9. 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/QZPJ32365274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf00f584d0eca51b68556f55391077e593f236d799c8c90b28f4fb9244eb89. 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/QZPJ32390873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643c734047ad68c69a1a9eb105835f5e696347a19f67c6e69a5a21a3dffd932c. 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/QZPJ32420058.