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 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 0x1ab6e13df361a58b9e3cb12f76e977b00d9ba0abc03104d6e47d9f6b834f9e2f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/650142b9-57ea-488c-b8d8-23bb92a2e45b.json and https://artists.proofprofile.net/proofs/artist/650142b9-57ea-488c-b8d8-23bb92a2e45b.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 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 0x9e81e91c98a0122947d74b2c5d50074d91cafd1fb0c8244d9f6420ddbf8d2078. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GB7NR1921401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dca034a61fed60669ff7a063eb1c835dadf98a4f1aeb4532e33484aeaece4d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/UKACT2131324.
Together - Kevin de Vries Forever Young Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a64845ff34e2a63cdf311457533efcab2b05aea0444a8e662a0b327497c0400. 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/DEG932103510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf329b9db969a403dc0036e6479b8317f49cde5216b95db5c9dc7e5b6ad370051. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/US83Z2209092.
Dawn (Edu Imbernon & Clemente "Imbermind" Vision)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45936c18892f32155d7e21f6ecb179286dc4e3f06ed260016c17f8052464ac4. 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/DEY472279977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d627d53ce56a8c48669227d66ebb387782a4d9d80dbe88e4aa588842596c0. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEY472279976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d14a1262a5cc6dcc4e7fdb1e4934ed16a464f6ed135a963680ba23a27df63f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBJX32317006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9b1780f57bdc0a72205af0fe29b7f9ee9bd75d8d90d5e119f6abecc13c25d8. 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/DEQ022001006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a944a4f62b34d9479b2c4aa7edb9833a955db1a9943e8bb8f7867671f2a4642. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/DEW872108272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb987cfa293750d46ab7a8e4d50e7e958fbefd2e11a3cd83cd286c3e4d558f4c1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEU672001792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a944a4f62b34d9479b2c4aa7edb9833a955db1a9943e8bb8f7867671f2a4642. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEW872108272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558e188f853040f66e4ad179bf60e52871f2e1a9284c14d7455668d8bc08f684. 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/DEQ121857729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2c56e3968e89ca72b958436adc2db2f7d230e94756c4dde1bc45f7b8ead3f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ZZOPM2105308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3937787d02bd1da4220ee46bd52b8e77eae286c23cb6f3a26dabb4661631d6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ZZOPM2105309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088ba570a4e0d7a0175e32030d0719203a84ce97b38e98c9664337755a9b7ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUXN22218684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974d8d70711de0596b23a0ec40378440f2dabd37ac2137cf21255d25aabe9310. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/AUXN22218685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5838ad91d6c813a523044da02175bf94ad1c16fb6794fbd8f5f5691b6ff1cfa. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/AUXN22218686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a375fd5a7b3853a189669c055502cd6143be25432a5ef6998590925f431c2d4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/UKACT2032557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a4d686a8089c9e466cb64b5524679b20311c3d8a03e83078b69547812143d0. 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/DEEC32000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23be33305c85d026ec3c4bc59d37aab3b7408068c03566c4571e76cee8985db5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEEC33500053.