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 0xbd8c914c77b419b16c508953e21d2d3c87e5a9e316f9318d6e532d440416410a. 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/45eee2d3-d64a-4f73-878f-25891dbd5e1e.json and https://artists.proofprofile.net/proofs/artist/45eee2d3-d64a-4f73-878f-25891dbd5e1e.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 0xfe12a59047fc5944ef46f95cf90f8bcf6ae0e3872e8e6e337219fc46fac081e6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:18Z), 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/QZDA62563477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654ff607eb49bbec48eee80297e936897235bb632e79aeaffb5b71958a2e9fce. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA72598522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea64258fdaf1ee7e512fe40d8dbfe129872e3ba67c57e84bd1ece7bb70c2546. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA82510269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f8a8b7f7eb38bae3ef4c7b9ba95bc5c237a72fe8b18a700c52e88bfa9a87c. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZDA72598525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b15e733669b09f38ae537e85a86c3511df710c3f55bfc5f997d72d6720270fa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:35Z), 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/QZDA72598520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbbb852e3a4901b7b85ef78f49c75b8b055ea6c17af577e434d15d33f27cead. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52516364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cba55b51975f342af7de783020fd0ca6e6b448ded38b80ee63cff4c798ac242. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52516361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2d7ec870aff2823afb2466bb6ad88e9286e27fc27d2da68d66af6ab0171444. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:46:57Z), 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/QZES52516384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9ccd83df174f9922d8bcc915244d136206ae1513c85df117101f2d5df5702a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZES52518055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9cd64f918264a8dd59bf1ae219f1bb41be6ca5e3f0db1a13c98a24f7c1ba6f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZES52516368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828d4ddce65c28b09c2ad23420ecdfe08691f4e4b0aaea9c11d303c3fa2a5dd7. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES62531227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b11ef4c58e2b510594e8f46f205099dd3d91e0e1e729261a0428166dc948a0a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES62525459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20abfcc5d892a1110da5f8869026594dc61190fd20538c0ff600c630623dd9d8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES62525456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0444a1b3475e76ee61544e7e4c21bf1976a9e20aa3f952807120b6f07f727f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES62527272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b7eb07474778cf925fba82f07d4c7d6b16b2d735449ebf2f40eb9483514b88. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZES62527271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62d0b7d79414e7d3b0f04b5b1dc3489d92cfc39da9557aab721aea4186c4876. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES72554721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2d7ec870aff2823afb2466bb6ad88e9286e27fc27d2da68d66af6ab0171444. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES52516384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69340e3bf830f3bec1b475053c09749c663b3a9c51648c34b1df955504c2fc9. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZES72554724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20abfcc5d892a1110da5f8869026594dc61190fd20538c0ff600c630623dd9d8. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZES62525456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e5f0794eaa7bbd32566e95e2f4359ae8cce7cff55866441a1768dcfc042152. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES72554716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828d4ddce65c28b09c2ad23420ecdfe08691f4e4b0aaea9c11d303c3fa2a5dd7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:42Z), 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/QZES62531227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b7eb07474778cf925fba82f07d4c7d6b16b2d735449ebf2f40eb9483514b88. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZES62527271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0444a1b3475e76ee61544e7e4c21bf1976a9e20aa3f952807120b6f07f727f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:15Z), 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/QZES62527272.