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 0x34f83b589b248ddfd5f60e2d815532d2aabf72b5805a4c18f1e7f84ac629122c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6683b309-2d63-4ce8-afb6-adc7f8f0b5fd.json and https://artists.proofprofile.net/proofs/artist/6683b309-2d63-4ce8-afb6-adc7f8f0b5fd.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 0x4ef8e26844ad32d5b2ca464eb02fb62eb02c400dd6ce13256b329b2ee582fc29. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QMUY42100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94902a7bba3c11b5dfdc2c3fca58089ca09af2183420d71b67afe767d938ebb3. 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/GBKQU2184645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00afb5b16b36aae7b4c538f98b5e8509040f09155879ea0ff5800e526ae9562b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHNB2298807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509616f2de736207303ab4caa544096ba46087f89346213ccb3b71e20edacbcb. 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/CA5KR2259401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6928e693cd71233e1d89b6f4dcc8cd0d609efd27765d5b77f3b39bdaf5264e87. 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/QZDA72425251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf35a526a56ccbe422b9eb214e0e5ea511ed74033785a09fea174b1fbecbb76. 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/QZTB52470812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7733f79e97ff30fc57180a42490dc2f642f539bf15f0277fcb12a8a84e2dc8. 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/QZTBE2457413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2b5fab5b6537967765782af167197c3005bdb8e566a67a01eea00a19f74191. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDM32029704.
I Don't Know You (feat. Luma) - Heimanu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238b44060da66d9c5f7b74a761c12afe1280f60b9c8456ac36f790fc6849be5b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USDM32022922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadd91977fb395efca2923be9bdc5e651d93ec35f3dcf01355ec0699692de659. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMUY42000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66034d4dbc13b4cbda61eeb6d994e62ddf1b9bfabcb11dba4742bfa25575518. 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/QMUY41800258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db6a71c8103657bda91db3e2bfcbb2b0154acbd8337f10934b1098e2b2044ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2161885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c8abe841bac9f289b3768229ab5d4c08c761ef4c1b1585fd4c747f960d34f4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2294568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f31ac1a5d944618d6c72bcb72ab0aa46156fd7090903fb56fdecb462d1d6836. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUCN32000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259d2581042bf833483de124781f470f53569e0577a12cfcdeecfd06991e64e0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2152193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678f029ca1a5f3808b42718e2d27a5acda18ce983c322f18b2eb21b702f9235c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM3DF2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368b86300aec6952f3b54386d8f36383252a3dff002d1ce7f75b501c3ec2ecfa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR2102798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac15de15baf96556248ce49bea404e4b80693e96644d5e5faabb9fa645522c36. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:51:20Z), 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/CAUM82100480.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5252a82f6b102d4e762a0940a25022d87b95ad5a01d59b43f44f09d35902f5c8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USA2P2109855.