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 0x2763fc0aa2fbba4f54f624864e0dc6692a944bafb8d36d4dfbc9048b477215e6. 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/c8afff97-01d4-4848-aad1-daffccec40c6.json and https://artists.proofprofile.net/proofs/artist/c8afff97-01d4-4848-aad1-daffccec40c6.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 0xc0fd49af25e9468bbcfac24c2d800df6da71d4f16a054ca8178b12384fb7eba3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GX38U2147528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6418a8733ea17a87e41c1fad94fcde5b12cc24b98c827e3a547bf59882ad2816. 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/GX38U2147529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0f8c944d5db75343539ea73e67334dc80d9fcf4dca5b3b2a3988afd615a0ee. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX38U2147530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00b25cf5101df448d372aa8c8f9059d6ee373afe0011754e1b847ef432d07a. 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/GX38U2147531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aaf13c9dd3e823cce8248038b4b51086241aa88ff2e35943b0c2279876972f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX38U2147532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa327048fbb5dad4e8bcbcc142657be3c28297a2606de2c6242e1cdafd21b8e. 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/GX38U2147533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b5f2dd34cd4eaf131007f28314c2754a5d9bda738147b1b1bf6426489917ef. 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/GX38U2147534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143a004cdcc32803db0d9ffa1b7564995ef375bed24889e20b4bf6d8d5027590. 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/GX38U2147536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec331dbb2a644dcd9f8277453a14b5ad1d3480c05e756a0f8cd319dae27a6ea1. 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/GX8LE2391447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a9c5b9d3cbc468bcc688e1eea7508796cc96d5ff506791a845a278a8ce6e7b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GX8LE2353833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0695b56ca08b543493851e6e5b77c7807576a077bf068998e2856877a9a564. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX8LE2351050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c464ba09e9fd153d68ec54d6b9f352fd239add1e5e826f6364e7db2a8370b2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LE2367876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec2b60ba626d1a8ad1c4a27e64b67a9f12d00ed4ad180e8d7c66400afdd0466. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:45:55Z), 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/GX8LE2338030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f0a37a94b626e255f1af88486330c74402bc01ace377a4e0ffe78d916f70c0. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GX8LE2385300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4968de744d9172d5fe57189d55f832c6b2f476cd93c59d681d906f56f9a46b6c. 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/GX8LE2305038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47935c9f100c71122d61586882480c72b089eb6d1b6bed02e14c782f1919f8a0. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GX8LE2312337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa187235e4f957c8a9e4a6b44cffe21b06f7b9a23342c8c7dac8222ea1c0d02d7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:10Z), 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/GX8LE2372966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dff221369e4539f5560ed95ad74673a2377cba7149428880d6fce1861b931f. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:40Z), 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/GX8LE2310667.