1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x57b54e17fbfd37ebad199e32f125649b408a0f8e5e813b936c60b2874002ee04. 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/939cb7d8-574e-449b-9a03-2de7cd299315.json and https://artists.proofprofile.net/proofs/artist/939cb7d8-574e-449b-9a03-2de7cd299315.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 → block OTSBitcoinBlock must exist at that height 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 0x0dd511aa9964572b29baef749b060d7d6d93c88191b15b53026b87c3ecbea31d. 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/QZW9K2388978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa8345da399c82806a9dd7647268346bf2cee542101371260bb8a02871bba60. 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/QZZ8A2409922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e57a7f815dcaed5165ff9a5e0835292293aff7d2dfc7a8fc17b4dc5b05e68bf. 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/QZTAX2472814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fcc4c2523cffe54c1c754d34b03b48f8dbf655971dad245132e2a1ba40ec9b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMPKX1721086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2371f2051087a0b4e7ede9f240d07826550128a6c258db5ecef681f67474b4ed. 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/QMPKX1721087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac18394572cb53a15aacf82a31ad5e4bdd13e566b7ce343f10257d40f49aeaa. 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/QMPKX1721088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2b2bf2603b7ba6ea45d639dc2c5292e00ac589914b6b76ea98c1e4100ae519. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMPKX1721089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891867e522983b05995e8494e93615f6dca26774783def4f5623e251e695b927. 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/QMPKX1721090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6d5e655a47e1c1e85f9cad6a29eb88592c4746b970ed0209731b1deba473c. 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/QMPKX1721091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66790dcfee52af2babfa797ef2f15ddd75fb2f5b4b429cf814e68cc91e98a7ef. 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/QMPKX1721092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1b574c49a2e5104e24c05099de1e651e9ced9ff84ee21f1e4923bd1695beb. 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/QMPKX1721093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25165219b917857d2744f96ef76b50a0caaa08566ac9027c92225dcbdd1d8147. 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/QMPKX1721094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2154efa772a8631fe909cd57bbba5530e1f71a732760364b16e16768fc258e36. 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/QMPKX1721096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2416b5169dff5d4c1e22863d749906491cffffd3eee0bae294410fe4574de127. 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/QZTAY2405871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e57a7f815dcaed5165ff9a5e0835292293aff7d2dfc7a8fc17b4dc5b05e68bf. 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/QZTAX2472814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2c66b3f779595db3ea795e6c6562ba7fa33c0459f07ebc35f4ef6db7439085. 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/QZNWW2468068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480994e10ba62d11d4ba92bc4fd2c869c371d3e0134021bb8b09a406a531f2f6. 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/QZNWW2471623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a407de61de7d972288656ba950138511bdbee48fc9e7eb0d3e34c72dc98b0c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMPKX1787545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441cba04b110d00afab230441860b0c39d14a6bacdd63ea1c774ea8a454d129b. 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/QMPKX1787553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420bc83c940d1b631d7ff9521c5ce23da45cf4b00a1a78df6a23a6fa5c7fca44. 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/QMPKX1787555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388609a2d91c26b2d0c58ff2fb314002c6538d96a34535f1909648d12896ec38. 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/QMPKX1787557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cb3c45c7c806584dcf093e51d5730812caa5718174dc2e7174bda4b3635c30. 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/QZMEN2383148.