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 0x909a616f1c69e642c46186761d7760bab027ee43717a88294d590724e64a5294. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b8ab7e8-57e0-41dd-abeb-8c52766d9a73.json and https://artists.proofprofile.net/proofs/artist/1b8ab7e8-57e0-41dd-abeb-8c52766d9a73.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 0x575f955ae5c68b5fc076310ec883861deaa9ca3e2577405c035a72d391b9130d. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/QMDA62318933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9565716dffceb0923763c0c04f019c0d68a764f807562ded6ef60ac914fba237. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6P42319586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956254308af24e1dd3a56dada9be782b91837ca9d8b246f801f79a2dc77d09a8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA62318939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32827a593f5f55189491ccc4ecc47f59e120204cd8d848c632f1a8a2854129c3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMDA62318947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33922f0ea5aa6d7e69c54532e214e70a82f8df752991b8fe8fb83368e0b6bd7. 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/QM6MZ2103218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8eda2ad53d7bf0287d583a1049eec6a0ac5e95e498b5ff6bc6447dde3af2f1. 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/QM6P42176068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea20af275d6b84760fbf9328e0c4b5bd96a62d356c6775f420c1c719d83005d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM4TW2216913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a56a7e89d1530a397207904815d0a7784ae5e5f27d938519bbc1efec178ae26. 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/QMDA72174598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243d2d3b36ae8e9c2d000d47684e9bbae471791609a1b3f636e814998a141fae. 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/QM4TW2216914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57caebf0a85d66bdde899ab98ec62c99a7ad87485f1968f7feed8d09ac280ae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TW2216916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a3ded6a01f6ffe1c25fc25d410bd929b45752d5d2eb9af3c1e28dd59d6544. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QM4TW2216918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5fb13d4269efff7a0843b8933d77afe1348372de86ff43036f383e31b5eb69. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:11Z), 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/QMDA62157861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32827a593f5f55189491ccc4ecc47f59e120204cd8d848c632f1a8a2854129c3. 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/QMDA62318947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9565716dffceb0923763c0c04f019c0d68a764f807562ded6ef60ac914fba237. 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/QM6P42319586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93032b3dfec0a5fc6521f1d73a2cc981671a22c13819c288825a832fed555de. 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/QM4TW2294110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8a77ee6339314ad01e475687241fcb9179b45d7a803233df2213b1f01f9ed9. 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/QM4TW2013785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44592f1b267e7a601c4e92143cc7e59303a2405bb3c2522a83dd26266254ee76. 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/QM4TW2013786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8af2b63c4890400f68dc4da1e70695cd37b686df0b891698537ca25027202. 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/QM4TW1919239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cef07f3383fd9565ec407b6fc9d016c135b34684c373aa4429c8628fd4b44a. 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/QM4TW1919240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31843b4be1eaf542eb04571d05404df271834de1bda37ad285e75e1fd1a2e66. 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/QM4TW1919242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a00352d7f8deff7d8c66caeb2bf87105a7b363f92c5bf3d210f362dad91d7f0. 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/DEZ651706394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d29e9146d25db547c1130723ab3455dac84d4a4ad6255aa8f1023c8d22d2a25. 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/DEZ651706395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffe0170b4765d6184bdd0e16eb952c8b5b20622d820ccabfcea6280d305f3eb. 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/DEZ651706398.