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 0xeff9f31d744f91801eb975bb4d4991048c66404d39939ae09aa392dcdc6dc4fc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46d42c36-67e3-4bbd-9c2f-4466e4b11cb3.json and https://artists.proofprofile.net/proofs/artist/46d42c36-67e3-4bbd-9c2f-4466e4b11cb3.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 0xb1a4adcd0cf1d05b81eef90ff060cdf90fe001c92570971ebe93c2c9187f89b1. 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/USDY41656989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8359c2f7f6f937c1eee5ad0c8b802c01aef2e5aab89e3eb32f76df5ea2d31bdf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDY41656991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c7159a2874d62c3882e646c896777396e84be439fb9eb8bc9721ce20fd0cc7. 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/USDY41656994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f492125dea9c47cf34c625a021eca9c4625eeef47486425dfc48b0d0597af52. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY41656998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d5826d8ae0d11d16a26259ef15a221bde095374ca20f9177dcd8657f3ee354. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDY41656999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12de9640c92ff62a2d393cf0aa1683f4018f4bc73404c5888daf077d90a8d05. 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/USDY42006453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43969f2c8f22678a0205f4ff53a8560fc57cb62ab52c5ee54e9ec1f57ba4cbe. 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/QZADU1809104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba7a8c89dcb9f9dd086ea7f5592f68d9eed246911fe3ee12a94ea0e866ba19a. 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/QZADU1809105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb628014e5ef4937ddbdb1d7765174b69c4eeefd40a5738ae684d299efe064e62. 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/QZADU1809107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aea65456ca917e9b7d8927a7af02b7439f3dfbf0f08329becf2efff116b9cc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMBE21703204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a7c785b2947b3aaf3ea85c4ae7ceacd30ee636db43ddf099ed2dd37cf927fd. 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/QMBE21703205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72d0a6e682e5a9f62859136cefdc1605c627d8a730a2b197d006e9f23e54bc9. 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/QMBE21703206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda2b0fac0a026329e0ceb8d120d411fd0625fad63050d20486d367547d4c238. 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/USWS41717205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c7f0572559b563619b68d34958b071007eff8a0545bf16b0beb6c90648951. 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/USWS41717207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd832044fa0a0740cf75ece160d718cbbdef6e173713af084ebe4528675a7e8. 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/USWS41717208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c7f0572559b563619b68d34958b071007eff8a0545bf16b0beb6c90648951. 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/USWS41717207.