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 0xdbec444c0756ec2481e23fe735cd813358fedd9c26473eb1f7d3fea1feb8111a. 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/1c67b05b-635d-4e79-894c-cf3807bc9a9d.json and https://artists.proofprofile.net/proofs/artist/1c67b05b-635d-4e79-894c-cf3807bc9a9d.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 0x2f068b216bb1445af74808e12f20d32285be908fdffe3f8d7e49f33071d58bf8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ31945109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d57814d2e245798f94f04a8579c86a9a84ec710d800b33862d9532ded4a3a3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQX92000969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcfc45c6a5cf89d8a6254ddb78ae110b522998cecb808caa837a7ec8ad1dc9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2019522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5cb415e730bea569a6517004c38843dd06e9cbf04061481aa0588cee1cef7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR1966895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ded516d0cc4f626fc9e359ae9c832bdf5b4c0d2ec7f8ddb0294e028f8ffd437. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR1978658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea735d1c2cb5e81971b10ab95c249b6c5fc7ab4f648ac4aa7c831dc39831e7e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYX1988929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec40fbe9a8f1be5582bc0e2fe6949d11a5b92700b4df7f825521ea48bbffda. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6N1975683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa8017ec77de58f53b65cf7d9df1b422be0791f04d35b5af5755ea7c6236eb2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USQX92000970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef54645e7e8e783468b9fa1b6fe1a793f6305b41579a62d7c011275a28c990e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQX92001171.
Trials and Tribulations (feat. GBF King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7731ea86daf9506e53d4f89c2745ea2d5465a6bc71d11dbb503afebff5a09ae. Chain 2 (Bitcoin): anchored in block 957029 (2026-07-07T11:17:55Z), 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/USQX92001170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ca5cd4658289f15605ba0200225d1d85fe3b6f2280d0f25b1702a6626143c0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQX92001172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f068b216bb1445af74808e12f20d32285be908fdffe3f8d7e49f33071d58bf8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ31945109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d57814d2e245798f94f04a8579c86a9a84ec710d800b33862d9532ded4a3a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USQX92000969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcfc45c6a5cf89d8a6254ddb78ae110b522998cecb808caa837a7ec8ad1dc9c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYY2019522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5cb415e730bea569a6517004c38843dd06e9cbf04061481aa0588cee1cef7a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR1966895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ded516d0cc4f626fc9e359ae9c832bdf5b4c0d2ec7f8ddb0294e028f8ffd437. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR1978658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea735d1c2cb5e81971b10ab95c249b6c5fc7ab4f648ac4aa7c831dc39831e7e3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFYX1988929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec40fbe9a8f1be5582bc0e2fe6949d11a5b92700b4df7f825521ea48bbffda. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6N1975683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa8017ec77de58f53b65cf7d9df1b422be0791f04d35b5af5755ea7c6236eb2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USQX92000970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcfc45c6a5cf89d8a6254ddb78ae110b522998cecb808caa837a7ec8ad1dc9c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYY2019522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5cb415e730bea569a6517004c38843dd06e9cbf04061481aa0588cee1cef7a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR1966895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14807374b0f536933a71dd468c757677ca1d2078d696ede01669d994310fc877. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ41916174.