1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa14a55a0ff5b74de1f0c7b1b16b3c228aa814d9184d0d1b205910c3722b2cb03. 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/87b07a94-8886-45a5-b0d6-84e1b5034667.json and https://artists.proofprofile.net/proofs/artist/87b07a94-8886-45a5-b0d6-84e1b5034667.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 → block OTSBitcoinBlock must exist at that height 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 0x2431cc3b4a208dbba3e64580b3e0d030cffceb4cefec191daf80a7acdebba871. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB82275537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60325d6f50c802262230a35a73d7d48e9c4bd2a5e89a94ce0e52d10abc514ac. 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/QZTB82275538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35cb17edc6b9b3c8c96dfd2a11c01ac03bcc7fb268c8c70d243494f5522f49f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTB82275556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a886d554eea0d7e895a7621ed32a8facf172ebb3128d329c5eea8c8a25b60. 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/QZES52304700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a529ee6c6af89d051abb58d956be1e6e6a5bfcbbcc9fed405d3360d048e5f5f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN32354073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa458178629b62f05de379b181f97b26766427482613153cd30cc7bd583085d71. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMEP2338863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80f1d9ab4811d8181b29c4089634233067c8dc44458beb9163062b80f4b2af8. 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/QZPLS2387867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bf03fbdbd07c30718bbc4baa6f70942f923b9cfd4a502470946a58852745ad. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFH2380931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8692f549fcd9da8f8c4062b73d44536892be6637cdf560112614005d771c233. 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/QZMEM2449968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704c85c02c8e770721bfa35ae05919a17dec3b76bc5f5822676c8acc6ea8ea21. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTB22440463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0785bec6869945927a0b6d0c3371bdb13df1aea39fe19728462c7e4f0b139b7. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZZ792420890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ce47d98809b7b2828844dcb218d63ef3484a300bac4f1714fac2fa19fcb388. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN62576254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd263f933eb76882ed1531fc1be3cd0cce482cf657dd18f7cf95da1c0689f2c9e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:52:38Z), 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/QZHNC2510165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ce47d98809b7b2828844dcb218d63ef3484a300bac4f1714fac2fa19fcb388. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZHN62576254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b0b5ea57d5e21505cb1c55556b7fdcbc86f8d5c91d51359b72afa524973445. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZMEM2548909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc50d2c839f232ff5f2d9479440f25586baa2c636880fb14663a96ed3821745e. 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/QZK6L2565532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330ac7e463295499d0e0fa1afe9457166246887e2dd33c143261e8b070e01cbe. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZMEM2548910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf2dc2efa78bd110c15842d368f865f9530c67b9270ffceffd380e8e362943. 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/QZMEM2548911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437056b8e82baaebf87ffc0c74abfe397b2c3a81e27861ec2363f3ca2e6804ba. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTBF2591063.