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 0x37e3513e60b4808d9579782f80b2719d45acec455f9f8eaa7165068304913576. 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/3d1d5d2b-db6d-4cc8-9207-f1bc3e1e94a4.json and https://artists.proofprofile.net/proofs/artist/3d1d5d2b-db6d-4cc8-9207-f1bc3e1e94a4.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 0x329350681818cec9447329675e46ae7dee82ff7b5ecbb23628f2a800c7841880. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6DC1682661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bdbb77576efd6c7da2f1f54a70ce5ed4e89a339fb7e8055ce4895bd3373eac. 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/QM6DC1682666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68123e5dd6bcdcb6285835333726cbba0f98f6d30c9c5e907966db314fedfd69. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM6DC1682668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc41921900e81144746812183164a91dc5985d76c36f5e0677451085d8f7e10. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:36:10Z), 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/QM6DC1682670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903bcd082b32d1ac201039445a109b7c2f8151cd8667ac43790821db6f709ea7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:07Z), 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/QM6DC1682675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ecc1d8a15706c3b8001bbb6e79d4a83f101338b428ae9e9ffce0f2dd932c8. 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/QM6DC1682676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5856a4e5ef8207c009a2c93b3061728a7e3494a32dbb980c37e3741b14251. 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/QM6DC1682692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929ad6bee8425ea2c771814abd58271062637fe12a4f9a1e8a2890faa627fb3b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6DC1682693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ec74b9d6f8c02f0685c600068446d39216c8d2e80f8ddd177c38a5083ffa0b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM6DC1682696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261fca3e3ccbd59c9468fa1a3c8813e5050d32e4c821440f47d5b078de62c4f2. 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/QM6DC1682704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a9c0fe32199951e95bcc3d314bf837e5e7956d98a6e334870d2b38e7f9103. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QM6DC1712244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9187fbefb272fe38b02e130c8915b55359f08f314119769f39ea194c82ea1e66. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:32Z), 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/QM6DC1712245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47fec02a8315dcb3f646b75a3b4cf4f4e93cbf1dfdc5f4e570884604e335d18. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:38:31Z), 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/QM6DC1712249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d9e07b32fc0489668e2c1b194e08d605b14b85bd364887f2f5d96f928fc3da. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6DC1718675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bd559101dd8a51f8250c0025295dad83bce8135cc851373b1466308c7fa9cd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6DC1718676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3626314905669bf13c208645382bd473a19b8248c59819d700ad25f8ef312279. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QM6DC1718677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a88026a5d358238308cdf08d857ebe8c6e40f93925b663808d75ca15d6fe05. 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/QM6DC1718681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e7dd3021726df73c468b3e45fafd4b90fb282ea0c756e2ce95ad4b02e86b21. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6DC1718685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd7dccb4061cc916bc80208586eddf26a37c5cbaf905d8508b510bd6e981351. 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/QM6DC1718695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0664e58c7825da70b829b894032ecc48ae2e883d56a820992d4ee284222c5fb3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6DC1910844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25dc9b2c9a62963bc79659e7f06c7c43e41fe1b90c42317a1e6ff528fd1736c. 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/QM6DC1910848.