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 0x482f31597bc3b2b970877a5ea2dc3265450ffa283f58664f44397eff9e7abaab. 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/24852e83-4e00-4bcb-a765-f7046231a190.json and https://artists.proofprofile.net/proofs/artist/24852e83-4e00-4bcb-a765-f7046231a190.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 0x1881f2b654264405238893978c7b234c127999ff48e0ff906c70d9e1023fec15. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QZHN31995867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbf8a1d37b72728382283fe621c6acbf786d9de11e1f7d025665272bb363eec. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:40:37Z), 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/QZHN81952696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05260c3dc3cdce7b4399d1354a12a4523dc4921e73c6d337bae4c03f4e055cd4. 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/QZHN81952714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bfa1ff4c34e223a209264f562839079a84f142dbe3b0cceff17a87ad51842c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA052013057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdede9a50ce931b5506cdc347c217f89461d2a99483a14bb0f8f959e53019941d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR96X2183559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302d556662194cec033bb14b246d665a51731d617cd8669b6ed84dc6aeedc34. 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/FRX282171855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fce45b45abadb1f4c940c1624e376cca530ff160234035993489579a06b44f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX872199599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a3cbb8ab25fe9ee4c25078476ed3988181acf1ce527ef411c2bba48308fb5c. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZES62074943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c3db3e682a8b9ab86403796069a064e6c0ef976aaaeda75e6d00d367dc2bd8. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:08Z), 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/QZN882420929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cdaae868475cea550dcf8b58fe2d184aacab44ff0f5075f5e9a4d5b08a2742. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:44Z), 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/QZN882546995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297c37378b5830abad914a4df4d1844feed9d0c34a28b728df915af00803d38e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWDW2505788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0758f8aef904d4ce3b030d4a0b1c83b5f5e5ff23329977c00088fc4fdb763ff3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWDW2558062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa807e5bd9534ac85637c73c6aa32fab8966b0e6b8c9e4116ee2cb8f328adc868. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES72009978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df86703aba58db0b7bf82a5b64b301226647b5f7113bf8977a6c92ddb44d192. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZES71944234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa807e5bd9534ac85637c73c6aa32fab8966b0e6b8c9e4116ee2cb8f328adc868. 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/QZES72009978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa76bf93f83509b200aeef2e6d2730ebf4df9f212f104fe6b044a5297a4584b. 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/QZHN31995853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91009f9dd906c9b0819d31c0aae42969c5fc93861bfa174d2c12f7e34d4b0e5c. 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/FRX282314475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4d14f8419398beb4d6169c61b5e63537ba5837e6d17de24452b388b276c86e. 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/FRX282314484.