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 0x09dd121fa0f47842a417e1eefe2de5714bd5103cf1297342bf8fe3a916cf392c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/718b84c0-74df-41fc-b593-fede645fd072.json and https://artists.proofprofile.net/proofs/artist/718b84c0-74df-41fc-b593-fede645fd072.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 0x242fa92a5a32a4d804a101ad52c521bdc2bf8b3a3e05ffe3abdc005f00d336da. 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/NLQ8D2400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b1140ee34edf909f9ff40e1a70ef5fc65310e5a3b55662fcb358b534069dc6. 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/NLQ8D2400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bd58fd35de710ae8b8b206033cee5348877f6e28159d6d2bcef639eb037c2. 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/NLQ8D2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb669224ab5f4a0a07f2418b8ee5596db9ee9ab5de4eaea0a1ef4ff7c8845c5b. 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/NLQ8D2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87febc0a08974b645fbdd52c53940d1e461c5981c9a1dc99a2d9c64f34d284e5. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/NLQ8D2300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214d2c47ca69531db83cfb2143e87e024758a13a3429e2e92e51e6ef9b0f1415. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLRD52257969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f357a2670f827093c1ac361a08675d92a6d94fcc7c80a5ebf8b14a2bfb427ff. 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/NLQ8D2300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36ea8fa4a8193cacac1a142ed1072024bd094fcbaa39c29ccc73d9190a0a4bb. 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/NLQ8D2300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42b438423fd4c21590a22e1925ca25c2454299761bd8810e31f20faf864da9d. 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/NLQ8D2201399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bd3b1be1f1de207a572df2504e906e9d892f89f54d952518adb2b6339550f7. 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/NLT2H2200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7644dc15dafa287766bed7afc7c72f8e32ecc0d3368f45920e3c82e361c3188. 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/NLT2H2200516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2fe1291dc386a4f035fe25d6c095f8b0363ecfeddbe8af754231f6f96d0d3f. 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/NLT2H2200517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f21b0e30049c8b16da94fbf271f7c54650bcc3d9a9c0343f95db2b54af91316. 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/AUNV02200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10605bbb0c6b2a2f3bd2125ea6dc6894415de86f7f7552f34ea1e42f5e2d3190. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/NLZ542200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8c0bac622f054f208c8984506e456e76f902e556aaf3dbbcefbd80fabac7d4. 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/NLZ542200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d9b2a47d0ae86e23ab3b95b55a203048c965d93ad32c6505b915df379a0c2f. 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/NLT2H2100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd1d8c435b6fa3da8124ec48a5e44d121f84f783838de0277c0f14290e863d9. 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/QZMHN2036354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02453bc3518798496d9aad79c0ef8950da1d5361b0ce497c8889cc95784078ee. 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/NLT2H2100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49bf973cf862d3b4cd29e9c9dd959cf4ae55264862086c9b9d59c0eed5e7f04. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLT2H2100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96a6adde9b1003eca80d8ddb234f1c7422614730845edeb4260ef1c50e7d580. 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/QM42K2142078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec05069fae6a2bd47bfd136751cd86027ce4b189582944315f6e0c60a8f3d3. 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/NLZ542002192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e34601c09d996a4fb9c0b6839e9f2e2c26da3243ce78342fa99921217971a3. 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/NLT2H2000255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0203b67426456ca30c7113704aa4dafd9d8cbf4ecd695327fb7f550f0351e205. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/NLT2H2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87febc0a08974b645fbdd52c53940d1e461c5981c9a1dc99a2d9c64f34d284e5. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NLQ8D2300733.