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 0xf4a04bf07391178db02e7ff142b02e37e96f45c18bbc78e681cf4fd1759e2460. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd4a7b55-00f9-4fcd-aa9a-730dbbfbb1b7.json and https://artists.proofprofile.net/proofs/artist/bd4a7b55-00f9-4fcd-aa9a-730dbbfbb1b7.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 0x031fc7f7763597de99fbbdcbdfa1d79e9fa785507fb67f9c12edae1c158ee251. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUBEC1990237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1e3c496b6ae51de7984ba5b6043448065589f1920e4d275cf2165354ebef4b. 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/AUBEC1990240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862b4df43fd291ca84a0e004c975c427aa3fe7f47af90bfb807670bcc83c6c55. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:10:47Z), 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/AUBEC1990241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d6b22f87629659f5608e415d913d77b7c9798563a840ef40ac7a6d8fbab691. 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/AUBEC1990243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36ecce1f09dfb69a959bb3a657c458acbf7bda21ed0e1c56aa5964e6835ef94. 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/AUBEC1601993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28405debabe6a8e14b8e068bd051e55ba4480decd6830033db02e9f118034a. 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/AUBEC1601994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda86a1298acfc7ce348dba86e4fac5d996a0057b2ae4b2ff9423c85ae985344f. 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/AUBEC1601995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05185e43417dd7b960e28a357bee8625523d97d94f1f85b3a281ce546dd838af. 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/AUBEC1601996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912326c64432928486f4544c5f05aaaf5d995c51e62d68e2fcdac2728e4e1671. 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/AUBEC1601997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b475b4f2c64aeb6ee916efef88d9e9bcdd143c3b7c5eb9aa4c9510f089be43. 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/AUBEC1601998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438c86ae7ee07e7fd36995af30b893b806136ca831872eb98fddce1f217ae6af. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AUBEC1602001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1e3c496b6ae51de7984ba5b6043448065589f1920e4d275cf2165354ebef4b. 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/AUBEC1990240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d6b22f87629659f5608e415d913d77b7c9798563a840ef40ac7a6d8fbab691. 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/AUBEC1990243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031fc7f7763597de99fbbdcbdfa1d79e9fa785507fb67f9c12edae1c158ee251. 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/AUBEC1990237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda86a1298acfc7ce348dba86e4fac5d996a0057b2ae4b2ff9423c85ae985344f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUBEC1601995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438c86ae7ee07e7fd36995af30b893b806136ca831872eb98fddce1f217ae6af. 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/AUBEC1602001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3505bd1cc473a1d2311c7fe9855361c0c4a09ea3dd2e550a26a587a698f4b0d5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUBEC1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3320cb215504424924a5f8d98a266e9c2c5527839c13dc5b034ec62a33a0c394. 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/AUBEC1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c529eaa8fcb0786f257b34b86d415b17586517b9b16832aa5b0ffa42bfb4db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUBEC1500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c746d2f4f9ca61e28f551e0e488baa26980922f3b24e6efc11eb1273f1e218. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUBEC2090193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368bb8d711192bae7fdf015d9bfff268b752a733c1b5ff6c323574426f425302. 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/AUBEC2090194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165bb8fb9483d7198a64d6eabae3d7221c0a83ae8414e17d8526b01967e952eb. 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/AUBEC2090195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fbe9f85e1deb643321353fd25bee11f72137d76f95193e690e74a36df46547. 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/AUBEC2090200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56befadcf3d092d9d27752ecb30f4120a60210dbeda142ed04b8a6dff69a3ab9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUBEC2090201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999515f1f43a8caa56f90d9339be353dd2d51350b3a9a3dc68168fa7a81605d5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUBEC2090204.