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 0x5f529c7cf4e6e0da8d16c9d9b08a5d97042d28cfb346ed1bcae7950d12bbe3d7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61db54b8-481b-4fe3-9201-b19a02678d6c.json and https://artists.proofprofile.net/proofs/artist/61db54b8-481b-4fe3-9201-b19a02678d6c.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 0x2cc0561b26a7fc13f807487742eeed3584f84e4f0397ad662d1413aecb63215b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ISZ981100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889960c6c2dbaf57e779eecf2bf8b7b9e2adf49da46440a05e9ce0df4a6de007. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:47Z), 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/ISZ981100484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f8d0ae408daef6659e1af18ee0d3e02be372398c10c99f63a40a45ba0d1cab. 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/ISV982159801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1799dcdcd2704969b822cbbdc83e16cd3a8b85ccfa18bc471c2a153c5e70044. 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/ISV441507501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f827385f0895941a2fa59df81891871d9930899eba9184b5d2153af93c91f. 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/ISV441507504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79cf2a6ad8bd7dd81ea3c461d03a29f26adaefee0db9a1162dbc06410ad828b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ISV441507505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6cbbe9d17188c1375ea17476b29128c6de823903e590c4c8d44fc8b80df8f3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ISV441507508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33b94ecc46eb26aaf1e8d19f222af61dd8b0c8cd8662c1c6f8939c2d1b472cc. 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/ISV441507510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfea88b52d4ab909d0b8446ed2e1fcf505b75ffcfb465270ee4729679b99291. 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/ISV441507512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bccdde59b9ab003f29b7b1282a78816a85f8b4c92ab08ef21261da5406508f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ISV441507513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa06ad146103e4a6a2e80865349ad84b74a3e60ce0a1e523bf1af5f3e4dc7a7c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ISV441703302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cc2f635ee92be48f881b7019d56479ff1a677253f418f3524874511e26a3a2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ISV441703303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75ae72b06d086323b37bce20ec621ec2bac57d7525cea122452420653b35ba3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ISV441703307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf36527a3aa377ea13d7256c53724d99fb23f686d8bb54f2b5c42a9a7c03d916. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:47Z), 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/ISV441703309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b60edad6be303b6b49bb14db658bcea2fbefaa5458ff80875ab52781aea34ea. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:00Z), 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/ISV441703311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e1cfbdf1fe4e40a268e63bbbee126a5efb773a02b78fdd4b8f5a0bb8752d62. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ISV441912301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168c0375ffd435ddb5a8700c69575d1a103dc31d462a282d14ab0284086f52b2. 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/ISV442288301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3cb11d06d49759f2c4ad3c4b6ac62c7765a0fc17c3405ca03539c4862d86f8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ISV442313702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52865c9a292ff47c10046cdb9ea77548bf54fe20dc0a0c7990d6073cdd28fc1. 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/ISV442313703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e46b2342d10e5684e2afc2325262cfbd98c3f5f30f63af8ba04a7bb243d177. 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/ISV442313704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f37e2e9be710f4099f144326a0074d7acec3336e7f78dea948445db1f7259. 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/ISV442313707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd8d4f7d3a207bc0742cb75fdc7cd4c2feb30b068c6a930251e451a70587b82. 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/ISV442313708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9fa3f5c99bcd9e96fc216cad7160f4c6ca1f9784dfa54e2046dd7f474a22d7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ISV442313709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee32c08e799d60b36ca821f89beae7ccca06ecc5601d6c4b52ff46fbf10e0a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:45:21Z), 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/ISV442313710.