1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xffaff9e4e074102e2cddf386b839bf6cd1358396ca9496a88011160d738b0428. 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/bb3e2f73-a506-4ac3-9418-4f2f28716ea3.json and https://artists.proofprofile.net/proofs/artist/bb3e2f73-a506-4ac3-9418-4f2f28716ea3.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 → block OTSBitcoinBlock must exist at that height 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 0xf2dce78e435a76b8fe7cedfb7887e1985d33488fc5970b59d079e8b5149a9d38. 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/QZES72004491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0368b747980d37729748da8c667086b0a402b632e32019e9c39f6fada97fe6e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZES72004492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde82f253118fd9cc7d500ee3726883629667c61f9e470bd19d30749900e0dcdd. 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/QZES72004494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eba2f3faeba4ab97d20cadcc4b0f92db514c0e143fc1b6082e8b60bd67ab18. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:55:17Z), 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/AUI442200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8fa8ae5932fc4a71117af5e7f294fa881443722e411f77bae0193f95a69811. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/AUI442200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4e3751dcb858c1ca21248b3a1e7beb8c4a276ed8bcc6dc1909b9c4ba233776. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUI442200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1a0b3559116bde5971b8509a4d13c8c8802664800fa4660925fca830239820. 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/AUI442100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0939806a9ba2f8c146e97c6c31ddb5ca3d7ee9cd30e766074d783025fb4d4c. 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/AUI442200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f1a7e8fa5dbdc4829928fb8f95fa6e46af100620eaf23ea1ef59d8f2933665. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUI442300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843adcb11dee482c1ee28a5cd39204716c40269680a16b64d3d8577d050a81ac. 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/AUI442300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b58a4820abf13997005dda1adb69b02874a02d1504640a61fc76e07d78f1e4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUI442300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781215e5725d1c0b290e75d0406c95427c582b1b78a1ab05710c5562736d00a5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUI442300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f6e7b5f4304035f1a1b87179aa61f91d4b03ec77637af729fcf342f1d2df4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUI442400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aad21a288ae97230e9ffb8cbc9938a9813b933e08bcb225641c3e94d00457f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/AUI442400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5088c9e99ed65b1f4c2dc2bd25ea2bb06bb1c6f1d3289e64dee1cbc24b072458. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUI442400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c54b39ad46a94406e238188a30e482b36c431de353673b6ed76ccdda2fad4be. 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/AUK3B2500024.