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 0x37561b75697f13662a56bf67d5761ef01902cd7ff22a0cf68739485e339bb317. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b914e3e8-9c24-4dec-bcf3-ed3a09a99c95.json and https://artists.proofprofile.net/proofs/artist/b914e3e8-9c24-4dec-bcf3-ed3a09a99c95.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 0x2728bf982a93ccd58f72b6da5b7108a341503506c4d2b80815de8dac586b3df2. 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/CLUM71902524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f5c1c4ecb819fb9dad63a21532ce79d40fab524a71732e0b3b6eb29904fee9. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CLUM71902498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8306499248d61c96d5ffdd325f5fe9432715fd850f71ca0e7296b37041dbf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CLUM71902511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea7c576f6c5286486777544b9c3d87a5716c94414e25a1edc0a46bca4e303f0. 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/CLUM71902509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe8575175e3c1ffd44c2ac84e9af4279b4c34d63841e0e7b1c50954f16dae38. 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/CLUM71902499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69ce9330a6c6509d14f7bf0a629f09cd1fc5165240b88ab53020d25505f838f. 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/CLUM71902506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfe6d16bc59833ae3e527c954786275f75e751c257bd6bfd7150887de1e227b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/CLUM71902510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9074e76052a227a49f0a777328525a9d337b137ce7a663f5921d0c19c9b1b2. 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/CLUM71902522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeaa747337560dc7cacf8761e6b259629697fe63a1ddacef76ddcc886d8fa40. 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/CLUM71902516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb27322b21cc3cb371b10271f12ce7e8ff2201bbf45593556af75bed9e675e56. 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/CLUM71902520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5e98c04e75aabc4edd382fdb45fee2d0ae202158dbc6c8c348d229ea31a6ba. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/CLUM71902505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add531822a95684873e07aaa5ebca28e9a6fe07bc354e7a3abeafed14d3516e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:58:57Z), 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/CLUM71902519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6c69f740addff2404a70a6955f13e74e0a0ae739dcb1000dd26d6f12783e9a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:39:22Z), 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/CLUM71901897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bf5775c680ac37e3065c246fabd17e26ba6bc673d1b78557645972206f3b57. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CLUM71901908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d889ecfd8b6d4f836c7ec53349c0e6afce1261654acd382903dab8a3e2f6754. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/CLUM71901911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456452259ac86cd24228c3e4107b792509ee23b33e5f4c010cc89390f55880c3. 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/CLUM71903034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f199a15ad33723c2df19b55a5610a691231d1e97831aae64a1f957241bd1b3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CLUM71903037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2775f33b25226e8c4722b10c5146e988d2ac716e6f5c6c6cf0df0ff30f250752. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CLUM71903044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a2e408ededa6033fac8cf981eef7aa945e22a30c880389a95b6399465662fc. 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/CLNE21700533.