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 0x57980f87b0345e1dfc5bbbd927d0f7508570cfef997d0f57ae95f669b5282723. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7b10c2c-acc5-4ee6-84ec-1ac62fbef8dd.json and https://artists.proofprofile.net/proofs/artist/f7b10c2c-acc5-4ee6-84ec-1ac62fbef8dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mexihkateokwikameh, Sacred Songs Of The Aztecs
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 0xe215d18d1e822d6d5e9c264239a15d9ae0f0911490776ac7cfaff12f5b1e6e80. 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/USHM20475340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbb1e59d1b4466958dd300e83e495a99e4dd011cbfc8eebad25e3fe7db5d2b1. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USHM20475341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff5895b2f4110b222c6fa10178d4e221e8c6a7bef35ca7895b2a65ba6c12bd. 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/USHM20475342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ef86e5019b49553a6a38d5b26c97473f5201b58ce5eae39e5e92eefc23490f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:21Z), 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/USHM20475343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe141676ea32107d4e755a57a24be46e5ec629ab4b8f5dc114e9897f3e3015a09. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:03:47Z), 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/USHM20475344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8df5c0117bc21e8adfdace0f372a3c1e4e23ef59ed0e6429c3343a0f38ca34b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:08Z), 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/USHM20475346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ff1dde27a908e3703ed718ef1ebbb2b72844664794a78b3bdb2bac72943f62. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USHM20475349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62ab699ca0e1344d6d5181c8afd0cbc82086f6f2dd976a70c91233aecc7bfd4. 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/USHM20475350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa3d2001c57e4c6ad16e8a46e39f2ecef49af89bc2c90eb684366cb57e88dda. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM20475353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa1574feec1eb25bace4e46c7e3afeb71c0c2313199eccee03f86f2cc7776e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM20475356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7157dbe043c5a8020f9f19250041e529a201e9c61bbc4270b57c6dafbabac88b. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:15:42Z), 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/USDY41663760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3294a0b556b57d2f7a78860a59d24504430a134cdc0d62973eb163152c5453. 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/USDY41663764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550d2a299364f688f89d8c635cb0fd51c4e40460127f4430c940bb4d76879357. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:26:36Z), 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/USDY41663766.