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 0xd6f78aa67507df079a0c4acb181252c258d67edea5733ab9f1797177d4e3ef82. 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/c80124e2-54b6-4771-8689-fd0081689323.json and https://artists.proofprofile.net/proofs/artist/c80124e2-54b6-4771-8689-fd0081689323.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 0xc193a9074395e8838c3fa2de609dcda56c69aacf6a62497da7ae1d3eaffccc9f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/RUAGT2473810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a67b0d7f12ee050e5478125c5e740911267e4085417c2ef48ce8c7bd0cce11e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:20:32Z), 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/RUA1D2317241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8999ff7af1c5eb1fa98f39dfb29432d7a6a10e3520ffb72501573ea57b1842fe. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RUA1D2346935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe159e2d9d69efb23fadd8d51d9bf3f1a86124e4d185637d9ec117ac37f35d842. 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/RUAGT2318610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee02c776d03465e3ddb489195b5c6e6af5b6cfd674626ae53a9380cd4359aae. 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/RUA1D2417494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c8ae84a9dd1bf891d0a372371ca97ab4bf2a3db79bc8b7ac04436fa60fdab7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2468298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7311768cd156c82dc9aad7316f44c6b3479ce120e66f7e39bad4b4408d0dc89c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:32:40Z), 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/RUAGT2418132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93512874007fb3b036160490229d75d7e199320a81510db08cdb17eacab7259. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:23Z), 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/RUAGT2433774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5f84e1591d6f6787792889653fa785112dd6c6db7fcbea7b727dba8f38936. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUAGT2453461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9c27da45bd19b86f2b336ceb6034dd706b0545f51c94518979c713cc3c5052. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUAGT2487335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c69b0c602ee275163689a978f9c40c225927a0ea3602152ce3b8244bffa0fb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:47Z), 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/RUAH62419007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1089ba29bd4419e8afd0b138e02265f5861e087960e0e9bdd781d4a5c72013f2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:21Z), 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/RUA1D2509811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223cfefdc60123ceb502766c940055861dceb35b3626d126281e27269f6767e. 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/RUA1D2591521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3508d21b9c8ae0485726d05e9b8d100e1b3faa26d8a38ddbaffeeeed4a0c80e7. 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/RUAGT2573936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43144240b379278d2577aad4723ee29e0f12f055e0ac22dc9dea47fa65fb859. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/RUAGT2588867.