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 0xb345aa6e564d96cb5bee3db03cec9218a08a239570f4aef5d4461e59652550dc. 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/a20a135c-50d5-48f5-abeb-197ac552d20c.json and https://artists.proofprofile.net/proofs/artist/a20a135c-50d5-48f5-abeb-197ac552d20c.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 0xaec22b630d5dc9ae1b7ee4d3388599cfd688cbd2b4e019215b116c79f5f1607a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/CAZ841700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2b1a0aebdc73c5ee44613d791bf2e090e1779b73e8e486feebba0ebe9d1844. 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/CAZ841700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f0e62264a514179e1865aeda84400e5c95610f8d4795558fbdfe5980f2ff27. 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/CAZ841700042.
Forêts (feat. Ogee Rodman, Caballero & JeanJass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2855d0e7098ba0271e6e33158ba035ea1799e6f120faf5fae93263d95faadd9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CADTH1800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38a316c850ad63e2b04c27c38181402bd52530f42ae40d5108c0cace95ffcd3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:44:51Z), 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/CADTH1800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0d32f9ab07036a8478c49b57f19db146bf14103a46e05b7f3c8567c953afd4. 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/CADTH1800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ede66e2ee5cc74b387360962fd3b290bf716ad97e166a76de5a0551cd0c45bf. 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/CADTH1800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1913764ec6768f8924c270d17697d43809aefaec96735670022fc66a3c8e6bfb. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CAPGD2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ddeb01ae32c4ce1cdd7eccbbbf784a39eb038a5aa3194007908275e3af9ae8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAPGD2000007.
4 Freestyle Remix (feat. MikeZup & Shreez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7585725b618734d8bfec870086f040c336ac564411f1d452db2d1389d0e9b137. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:09:04Z), 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/TCAFO2115191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee7c13b3d67115b6e8b7299416347312041832952be6f9056a643f95deeadd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAPGD2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a774421657e2c75c8f0b8d0425cdb4357915eef8766191fafb1b8f4b7197b3. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/CAPGD2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc7c8c9b1027c5c44ea9e4f943f8485883ef524edee0ec72e8aebefc1980d92. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAPGD2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526255282b1892da7b26a70018b4de895946942be57cf4bd535488c389f006cb. 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/CAPGD2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8818e845a3a5ba83771392ea2b59f25a14e69385f8c39c08c6e3818f88571a0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAPGD2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee7c13b3d67115b6e8b7299416347312041832952be6f9056a643f95deeadd. 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/CAPGD2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aa47f381f1cb4e799f9762c0287bd5633f529441a5f78c381ffe53f2742749. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAPGD2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a774421657e2c75c8f0b8d0425cdb4357915eef8766191fafb1b8f4b7197b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAPGD2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d408550fe8ef478b8b60277fa11c0908890592729bb5cfbd13b4db9c708f447. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CAPGD2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e69a015dee53c3f9efce3facc58e6db06e418049ee7c99ea2a67bb5723850e2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CAPGD2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26baf25bb4708914d69a67a99676376dd2b6709a5de5dc826d7a344e9ef11e47. 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/CAC0C2100624.