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 0xe2d0bac0d6d3925160e43a9d0838e10ef70ae684c2108401af93bf922b0340a4. 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/321cf313-cdbf-4801-bff2-9b4cf90df63b.json and https://artists.proofprofile.net/proofs/artist/321cf313-cdbf-4801-bff2-9b4cf90df63b.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 0xa6d979091401f761498f849e73824c3a64600a07570689b50327e2cdce4301a8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6HN2141528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d749c1ac8f1307b084db55e14428d8892bd255036a46b3eae71aa8fbd299e2f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:10Z), 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/SE6HN2141531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857667fce3bf2059fa3b4f6a8fc159b93b104e96a4a47c19ef8fb551bd929679. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6HN2141537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc0f7219f04950267c809321db5caffcb3c9504060305ba31d053d92a03755b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:29:54Z), 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/SE6HN2141532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759b52c97b77f4aeb3dff65c02d8cdbfce235599e57631b2972db9bb71890008. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE6HN2141533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5574e60af793c822fb7847d0c1582f5e5d7aefe410e15b7de3c912affaa905. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6HN2150136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac7c741c1a3a4555895b58aedff8649ea785f6f2177433d3c7877800b81984b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6HN2150138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36867d5d968594f72b077c4b4bfed637e2e804b4fab4688ec58a7bb0fa7285f0. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/SE6HN2150143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40da8a82e9675f7b145f8efa1f13d392b5cdcfa4b9bf78bd4b8f28a07ea6cc06. 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/SE6I32121999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dc476667029ac6e1c0b1bdf4eb2addfd855a0f08c53d435876a58291a5f1ad. 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/SE6I32122000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5f9e234e7570e672dcf0fb107b40b57d806b55ce8e0b354e55a5c9ba46fb12. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE6I32122003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0da50d51e194445a61b79e1a5b9eddfd707065aa592553a96eb7a28c7350f75. 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/SE6I32145045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b2e9769ba6e2fd917a5626c7904f7d4df1b9cf213aa425bbfaf1d5a1b4466f. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SE6I32145047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cc60e5976519a9ea5b3b2b1e528137a46bd6ac57ad06e2d794a9332d6f697c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6XW2149647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b153e1aecf494eb6468d73b854bc7a68b8bce90af2bf87dbf0bfb769b53467f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:06Z), 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/SE6XW2149649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58de29536796e271b0402ac2660adba1868e101407cfff60a735e9ffe27fad11. 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/SE6XW2149651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a13f41bdf700209688fb5c8840fea728e996321513db716032fe4143b4739. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/SE6XW2149652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c2be265e3897997aa32affa00e61b189d61957dba9d00de0d4901962fa5b07. 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/SE6XW2149654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586b4d1bb7d0b42c0e7d0e91866a91282b02a0fe1699f689025be1a52f778660. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6HN2145385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9af0041c31a772170fe58f995b766c9cb68dd81024f580f1345ce2b4127641. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/SE6HN2145387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309cdf73889f300ac3817927f62b21728f3fbcebecc4bbb4b2e9798da7505b7a. 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/SE6HN2145389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d6fcdc755da14439afec2934ff94e06eaf7faf0cdb849a6dc20090467ca9e8. 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/SE6XX2138910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367fab0c89c616f09e7d57f6dd5a9017c3907dd19436c3b0407fda62caf293b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:22:18Z), 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/SE5752251549.