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 0xfd167d5ed126396046828ddb914a1f80c917413ec6c90f741cb1f019cbb02eab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9aa7aab-9abf-4b16-a54d-d34b94dc944b.json and https://artists.proofprofile.net/proofs/artist/a9aa7aab-9abf-4b16-a54d-d34b94dc944b.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 0xf23c81413650192eedfc0fb5c3b20b9eab40ad9ec23e9b527ab1026a013ab616. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZFYY2371704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dfb9b6a5d600a1d465147474c7850e6cbf624a0b8ad1359954d78796fe557f. 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/QZWFJ2352390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca623e1322a8e327bcfd9def28b51ef1b410bfa393b518e4c166da1c77a7c89. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZRP42393279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf21c85bfe0baacb723b7edb380b9725b9967fe3770bd65adbfdc5f4ea566abd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZWFJ2352392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bec14be83168aa081efb4e1ecebe4d8059f4ddc535c55a3b1acd145c554380. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:30Z), 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/QZWFJ2352393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1763fa8e5b03fb16303f5d6dab9405e0d1832e854111a60434aeedd89a91784e. 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/QZWFJ2352394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86cbfe943760b072ac23325523fea8a9807d3ead7505570809b9a388c21973d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZWFW2443523.
The Passenger Side (Heartbreak Queen Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b2ff8a5e406fcfefe079455efda4f58dde4c04d3e439262b23b3115ccc607. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:06:50Z), 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/QZZ7L2447625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e848f6200a9fabb55401fbf5c6a5ea75e3ff43ea2fa98f5be8eaa1749db2f1. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZZ7R2470341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e848f6200a9fabb55401fbf5c6a5ea75e3ff43ea2fa98f5be8eaa1749db2f1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:21:23Z), 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/QZZ7R2470341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86cbfe943760b072ac23325523fea8a9807d3ead7505570809b9a388c21973d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:53:02Z), 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/QZWFW2443523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b2ff8a5e406fcfefe079455efda4f58dde4c04d3e439262b23b3115ccc607. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ7L2447625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86cbfe943760b072ac23325523fea8a9807d3ead7505570809b9a388c21973d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:15Z), 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/QZWFW2443523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e848f6200a9fabb55401fbf5c6a5ea75e3ff43ea2fa98f5be8eaa1749db2f1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ7R2470341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff514aebf6e795ed92d51cf4f122b2b792cea0dadd02b76e08645185b2ea3b2c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZZ7R2470342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284af35dc98577507e7034e7cd46a620cb80a7054fcbd00c4c19646438162751. 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/QZZ7R2470343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5210cd7561a38608f303fd76bf89bcb80e5b24289fbf2e15f8698b7d33014a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:08:33Z), 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/QZZ7R2470344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab7fd3aaf50001e959bfa94be69c6d890219234dfbebbac075220498ab47051. 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/QZZ7R2470345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a70d3ac84bf8defdf8f866dd40d80d43d5f2bc970db99fa938ca3bb3cbb1287. 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/QZZ7R2470346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa973e71aa0766d7e2b0385173c27f39f97a3f083d828e83616203a8665841f80. 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/QZZ7R2470347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65538bbfbc6d2fe90236fdaeeb6a3dfcd62a9acd8003c2e78da468dded5c3955. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZZ7R2470348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15e229a57870fa3406869db35dcda3ee16319966800285db62fd43572205814. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZZ7R2470349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b2ff8a5e406fcfefe079455efda4f58dde4c04d3e439262b23b3115ccc607. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:25:34Z), 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/QZZ7L2447625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15e229a57870fa3406869db35dcda3ee16319966800285db62fd43572205814. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:03:59Z), 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/QZZ7R2470349.