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 0x939950e50757946cd3fd1565d761e4d976eebb3b0cfade59b378851a7e1d667c. 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/054987aa-1329-4d14-b7f0-fc1591ab57a0.json and https://artists.proofprofile.net/proofs/artist/054987aa-1329-4d14-b7f0-fc1591ab57a0.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 0x491f61dc7a9376070b2c9d716d2256eae76925e2b8103d2fb06d3473bbfc8c59. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:08:53Z), 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/JPU921700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa643f82f284a2daed8b7cbcce6c6a4a7f4681d224109c30acfaeb54f19235859. 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/JPZ921913375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f74b064fc87ecd1733e7130d717307ef580e3d238e028b8a2cf2248f8c5eab. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:38:01Z), 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/JPZ921913378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa643f82f284a2daed8b7cbcce6c6a4a7f4681d224109c30acfaeb54f19235859. 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/JPZ921913375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2868a116884ff8070a3367d1fb7044693885899a7de0a1a85e77362961c9f0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPZ921913376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe41be0414bc41b07a0be909a12e2eb15f1ab079160068dc64973bd3cf70577. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPZ921913379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb8e501ed5102f7d221461db274323e6c0e140b62ed43cb0b536aa1838bbb72. 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/JPPO02105017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cb37916a9f04230ac941a5f91e086d18aedd177fae3350527acb2faad51dc9. 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/JPPO02304411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdaeeb57c8d741fc24dcafb840aae51f2f9c0090781e8099efeb2039fcd937f. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPPO02304412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743bda80612c0b45c89e74b1b5a6686e2aecd453a6bfd368f8f47161150fad1. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPPO02102121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf12eaf5f881eada0b5d383a32d71721fd0c249fd061ca483e3d8f00d16cb746. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPPO02304416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8824189f9b36d76ac9b1fac4efb3b47f920eef70ff26ff456ff754655542f56f. 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/JPW462541920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134c6155631b9cf77cb412c5463b748b2492495e6520b96d32af4398c5c1ab49. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:33Z), 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/JPW462556299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8473f5d09c24a70947aff0964491381fcfeb92aa371f1fc301e30c1b838d7e. 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/JPW462575221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f541088c8c57188af7957c6e8fad6f1683702d945791eb93a8fac55e52d097. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPW462577447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fe2ff402e4929d4f839ddcdb3de4a6f3811675abc39acd7da6e85b2c1e6cf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPW462577444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eab5839890602dbf28d7177cdc3a23b37e96cb3dfd3d297ed18810c5008969f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/JPW462578621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d99e56d88e7f8cb8c8fc0d839abee37c40d0edd00c74becd0c4791ddb3295b2. 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/JPW462579535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6943c3983d276bd446ffd678da79dac2e76ca4bb6c37621fd5adcee6fd860c4. 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/JPW462580770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f64c6dfe19c4ed96754b32f10cc4578009ca2d4d9172658d66bd7456c3463c1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:40:47Z), 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/JPW462581135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f3bd6d65fa25af378632c5304a7618ccf0ba4ba8beda8156108f92beb240ec. 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/BRTRB2307099.