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 0x26101fa378e199c0507c38ec6c0c5252792f9d2029cbb1524af69b99a0406350. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0e64ed3-195a-4957-b5a4-a496165a03af.json and https://artists.proofprofile.net/proofs/artist/c0e64ed3-195a-4957-b5a4-a496165a03af.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 0x71a2c83e3bedd64bfd8a4907af95a20a4dad754c3d0f9da42364d8c0f2100e31. 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/CAWK52486520.
Peaceful Classical Melodies for Relaxation & Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0352746bdee656d1c128a6ecaf5eed8e7d0e77cf2f0cd635ddafeddea3507. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:43Z), 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/CAWK52486523.
Relaxing Classical Sounds for Better Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc06cc089b0a9e96f15076a010d11cad5c3fee7b52ce33aca941be0e4d6fd41. 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/CAWK52486524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0e1352bc1040c5cdd198a4431a83eb4ef40884983136f289a899374c0ae818. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:50Z), 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/CAWK52486525.
Gentle Classical Music for Nighttime Comfort
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ef20fd1af96781d54a5609b3e2e7e519c205f66b94f56b0d296ede80f59206. 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/CAWK52486527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157937cde6307ed6f858f4088eba1116a05cfa0b978d5dfd8628ae3072573317. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:30:20Z), 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/CAWK52486528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccae9661cb395aa40366360bb1b9312dfcff931efcc8f55a1f87b04b9512432. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:29:58Z), 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/CAWK52486529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8860f48461ca725d552d5b10b174d2723a02d334b04ea743b9c03eb63796a5e9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:07Z), 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/CAWK52486531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd43ba69c7d737eac099a53f8866b7ec1f10ab5e0ac0dffaa607691cc12dcf9f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAWK52486532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba329e7e6a30e1fd09d2ca7c0400dc8b9606ba735a24b1301772479593c40a6. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/CAWK52486533.
Calming Classical Music for Restful Nights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56beb8d02927d6a88688dcbc9edaacb3a3c3b1a7ff48731a43d9bd22e9d87812. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:02:45Z), 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/CAWK52486853.
Classical Music for Baby’s Peaceful Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d9651a28e3bb5ed68ff2b1875cb8fe58b8b821a342598d4334a08443c3bf14. 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/CAWK52486854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd951940c999da9361786e3a4bee05aa221250029cd2781c8083aadd735a5d2. 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/CAWK52486856.