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 0x5b4b48e95e662e47107553ca707068b5389e9131eacad19fc6b4fe923c051f54. 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/fea19734-3a39-43d6-b4fb-3b8ce756a19a.json and https://artists.proofprofile.net/proofs/artist/fea19734-3a39-43d6-b4fb-3b8ce756a19a.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 0xa2700690dfaa787f60593dde89af37d0a96dc8cbbb89a9dbebfb5a4f80e547c9. 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/QZ5FN1969107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea13d252749333e715cfff9eb708065c552ff63b8f5de8a29184212b907d8d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:47:14Z), 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/CA5KR1962325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6ef1dfe0fa68b5267dcd0dfe259a722b79e46d703650e4368f7be07f5cfdb2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CA5KR2006193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ce24ed8160541d2c8164f1d921f1a4053aabf4d712b250df5cfe2dfb228fcd. 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/CA5KR2006194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3fd40f5a433670fd3a080498e9cf9ef04487f7873712877db3c9c95b605103. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5KR2006195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0084acc494a40ae05f6d52808129dac714fa95269425e3c959143ac946809a5b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA5KR2063616.
MEET YOU IN THE SOUND (BAINBRIDGE REMIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cebb023aaaa0d371e5e3b1d13da740035c563e7b0ad40059d36b2f1b0c87800. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CA5KR2335974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cfb342faec824f0b7a9fe687ab9ffc11b3b1bfa406203dc2fc4ef035f66df9. 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/CA5KR2335976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12ddca9003eb6ecb579c0f67fd9ea4a56b4e74af6fc19103752cb9eab7ad202. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AUK3B2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd433801efcb4f4fb66c8b53505c6185b0d723c5883758082923d68bd8a3ef33. 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/QZHCR2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f12184253fe971957624ccedb4487cf137f1d865b4ea12900df51980a3f91c. 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/CA5KR2377364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d52d1cefca0b064a812099619bb011acac366a57796e5b333eccc3380264cb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR2437472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c6dc29d9029b01052d64c4a5ecf0540dba16deadf90e6c46864544002503ae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHCR2000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f12184253fe971957624ccedb4487cf137f1d865b4ea12900df51980a3f91c. 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/CA5KR2377364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d52d1cefca0b064a812099619bb011acac366a57796e5b333eccc3380264cb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2437472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd433801efcb4f4fb66c8b53505c6185b0d723c5883758082923d68bd8a3ef33. 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/QZHCR2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadffd0c4d25527b744ca14b2a9e9bb25d31910b4a78d1b8608d92c17623cec31. 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/CA5KR2320834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c6dc29d9029b01052d64c4a5ecf0540dba16deadf90e6c46864544002503ae. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZHCR2000139.