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 0xfb601ddf34b8efb8d1662b818c767d052876e023b6d2fda21d4e61b896ec6611. 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/4693eb02-6c8f-4a7c-a12c-7b9db5dbcfde.json and https://artists.proofprofile.net/proofs/artist/4693eb02-6c8f-4a7c-a12c-7b9db5dbcfde.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 0x893cee3d67afe323dc43838e399ce4f3a2b9b7e79031d79c2db721a08520768f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:22:08Z), 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/TCJPG1724826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585010a46199a534e89b7e750b9d4948cd3a5d7211a1c59ff9ab82b9bdfdd9f7. 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/TCJPG1724827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd22b93b1f518b1eb15e14d2f7bda14db82217c13930a3606d6daedb2c7430. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCJPG1724829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cef282be4f2b5073fb9f5885c69fdbaced4c82544df084acffc4bc1b2c9542c. 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/TCJPG1724830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413e2811d3e1fdba038b9947df70441300feb516679e50ab7398b1a8a2771c32. 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/TCJPG1724832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7c1972a84a0b5574beb7ecd80a5183420f99857996e0fd69bb2ba4fad1b039. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPG1724833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4098363d895a0dfe1b006b633b29e9ca455014c9fa8baa0dfa45de5eb4c4bf01. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:17:33Z), 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/TCJPG1724834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e7e3ebf7da24d5f85448d3626cb0456f2f45e7f8e1941eb58cdb210f46ab6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:28Z), 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/TCJPG1724835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfb3f53c958f110b54781208997af047b801e30cd1fb90b5cf1054c44a6eea4. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCJPG1724837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a6f206c54ca74fe633fcf0c97627915501a8ce47407a4e3e9d8b763be829ef. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPTE01504150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c345fa9a07e33e4d06599f640935a8e07cb23de71b3d14aee078bd16a89543. 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/JPTE01504170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0cf8bdf0d1924cbd790eebbba0107cb8f4fc78acd5d55e2ff1e2716e08ea9a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPTE01504180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b864d4a9c793f0cc7dd258a87b11fd175c360ac92da380e4918dd147217330. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPTE01504190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf8d8139f3b656518fbf65fb22a53b13803e05aa8761e11d8a434af5fbffaea. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/JPTE01504200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa958c800eece3e6e113a6a400df6a738c0e6023d8c3d2a421e7b58f2f6086e1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPI2575487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2f5999ca127a3e453ace1ed50c02ea3f765b923d3e99e68e9f4c06c5a56e8. 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/TCJPI2575491.