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 0x6be1f04a82f4691a6f331c6f4aaddbbda0479e6251a9d97704ac17953db4056b. 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/1e6afec5-64b1-4b80-91c0-b71b430f29c7.json and https://artists.proofprofile.net/proofs/artist/1e6afec5-64b1-4b80-91c0-b71b430f29c7.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 0x8cbdaa1eac83d3fee704710d2a6ae7810741a789ae84f7e341b84faef9e3c960. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM91309870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3351da30ded228597d8793532357ee4ad30f1fb5d1c525031e3f9d5a9c08ad. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM81528555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b50e99bf94397b0977a7bc3a23c515e46a14d6c4ed51c47e4f3f8c8165fa20. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:11Z), 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/QMVVT1850051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429a8599a109a9f7889b682a4b1038c478dcf5acde96ddc97eceda71df77abd2. 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/QMVVT1850052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dd7044839422c8b9fe14d647c1b0b52655124f4d54e14c7fffad0883189aee. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMVVT1850053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe225da8184628f81bae93942cf55f7a42131ed99a8a3a34084ed3a2737b5ac7. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:38Z), 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/QMVVT1850059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbe98b1d8696504a114b704149d2190b6d97e17ee77442cd8ceb39916e07ca1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:37:49Z), 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/QMVVT1850061.
Chaverai Nevarech Vol. II: The Shabbos EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08d0ed85c1f275668320bc9851b9770a0169f75127c68d5776b365e784d5f84. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/QMVVT2150051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a56e6d040a36ce100bad90c8b38b69eb269598319faf38386a5d2ee3f455f0f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:21:02Z), 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/QMVVT2150052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eca9a873245e29ced94638d1d493d03f2e7acacd29a8581bf769c8f493774a5. 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/QMVVT2150053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849dff7d7a4bd12dbbbb1739f33ddb8d7156a337ded9b76db3fd824c6bff6590. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZFYX2553998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eca00ce3927aced9870bfb23279d4e168dbed86ad9375e110a52b3d785ff0b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFYX2554000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fafda0714283ae69006fa19a4afc5347cba87d9ee66a43b200aeae2ccb029d9. 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/QZFYX2554001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1e8e7baea02825e5aa2e2bd25bc67dc8a6f2828957f044f08f8d51bf0ba419. 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/QZFYX2554002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33da6b5320d2540d8114cfc59c0b385dd61cf32a81d8857f8efa3abb3de02b. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZFYX2554004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283a7a599c86dda998e6c87d651a94aa6fb8159b2d1fe2b335ea52ce50c054c2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:52Z), 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/QZFYX2554005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef01cdb335192ba738c29c265a693a740602c4275c2a6ebbc31068fff1478c2f. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZFYX2554008.