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 0x137feb0d2c13cb009703c6f04e21a84b4fa768bb32997308779915041aae9131. 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/83844eae-c24e-4050-98c3-8fef982a19fb.json and https://artists.proofprofile.net/proofs/artist/83844eae-c24e-4050-98c3-8fef982a19fb.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 0x50fe5e065fce33d0927eded02b927b5ef92994970ddc61a3e1c5606742e2750e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QMDA62123614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b2e4e4b6ab3990d73b9e0dbcccded36779f7085cef8297f7494574fb96b120. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMDA62123609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d62c911875ace2b1c643e2332d5e2bd506b27ea1dbadd143b8a9964d958347. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:44:47Z), 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/FRS182164387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719eb4d911ac63a7144c5b3564699302379071df6458421e89b57ac592a8776e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:05:59Z), 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/FRS182164391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5069fc843a2b18921a06a040b1cb907e0f7e0654e66c3b93516e266c386000. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMDA62123611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8799776963543b6130da9561c8873e59f8f5c9d49ac2cf5798f9c2f92a056e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMDA62118573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26161b896fa1135f4a30a74fe1f6da188f5dbf1f4651b8b9e3da71fe3da3152c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMDA62116639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecbe44b982269aa315cf600b87425b00b1ede4620746141fe9e61c0dfd9ad67. 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/FRX452176431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50481e0594d4cc0f5b4cd3b67e1a143d7f3ca1bfcba1d9691eb7764e9e9a6db. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FRX452161126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8799776963543b6130da9561c8873e59f8f5c9d49ac2cf5798f9c2f92a056e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMDA62118573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d8a45c1e6e2e175168a9ba1a1595bec72bcd8e8508f4988482db43247e6c1a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DGA062477080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1de59dd0e2e1b13b67d8a53bf8b00b88756eaa22157485bc2c059fe515d911f. 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/DGA0H2412793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b640820aea973c162446dc988ba1c2e27bac51d778676f3c4229bb0b5cdaf9d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA0S2478241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8258c46acabd80f58f26535be4b97619d7953d569aebf5f9d31490485fe8ca12. 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/FR2X42566864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2349c8eca0ccd77d4d441310676f41c5341c014feb23f03f4a811e238c094d09. 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/FR59R2522425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a03f4a4d7392eea5e4dc20ac9d9e9c4f3f63210f57ff1bbfc77f5a8b6fe7b53. 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/FR59R2570789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568da52960a72506aa361a061611232a4eddcc3003feeb8f9961812f3be5b44c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:06:45Z), 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/DGA062524177.