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 0xe1932347c75b1f1885a6594be7155f536937f21e29b17a31ed46e4f7dd942de9. 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/0e488f87-a637-4a8f-a783-1f9531f06640.json and https://artists.proofprofile.net/proofs/artist/0e488f87-a637-4a8f-a783-1f9531f06640.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 0x215640a912b86318bf152d9d7fbbcd71174e8c42be286e26960b55b1d72f7485. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:21Z), 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/QZMER2491011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f16c8bdb498ca0ab68bef4f559ae47bac0cc701efaaffdbd98a8075f0be2a83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFV2456145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ded088e08eb3705da7b8899c2f6b0ae5ca2e070f7e68a70bf0b7913362d37c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7K2477961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9685a75e9fad014c48dae1be6e20a8f414fe0cdd2cc66cdbe9f979c293ed4109. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZZ7U2417408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd51299c0f7d838e1a333e2ac1725045fe228b871f41bcc251ddfbfcff8e6106. 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/QZFYX2516043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd07dabd9cb3568c35f3cee4a7849a93659a90bf57c6aaea1bea7c344c80a17. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA42553012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bac367877c626cc323967292b49f5791a4d7e1988a8f7b8c79dd08659692ea1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES82567408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a2947773e2cb5c758be9ebd2fba3369e7ce80262a3cb87c0d8a7a6c2e3b9f7. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZES82567409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6f173b286b5290c1707fc2631b5d757149ffe56fa3b8bc62e72f452f71d236. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES82567410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60d2ac418131efa2091cdacd2a703039a1d99cfd42771b45cfb32cc6339a338. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZES82567411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6833b16053d1eac2fe6fc3255d3d2040cd244bab063186e69c6ee0ab446f4b25. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES82567412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479e669d878460d436add847f0c7bf92230c5b552b4664e5b8203aa391fb0e1. 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/QZES82567413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dc6c06a938b7897f16926b2b3682c491be2f0d0b1eb9b367ef996ccee1ff0d. 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/QZES82567414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62a07c7d23b22fc173d818e3877ac01ff050c75b5253139d316eb6a808f6ef9. 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/QZES82567415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5d5cc68b19bfd62072e43fdc3435d6819e87b44f0c5007cd629a6d469d1ccc. 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/QZES82567416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae356a945ad60ea86ca921bfaf07b8bced96017cc9353b2ec22b1a449114afde. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZES82567417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7de36f0b80f99a8e6d6f2eec3436e28c1e8f18f0da9d228e36fbc9bc3bda2ab. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFJ2576879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3fa14cdc0e1e865df7ce3e0bb1852f0be3ae7c83a010470eaef6e456a9ffc9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFK2502014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456dad78d3646c390764f117b70a8e37d90aa3fa248a3a14d46ee07550b02543. 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/QZWFK2502015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69f6cdfcf085cb9f8b9c81bf0cfa033e8538b3d6ba5418bd6e424eb96f724ab. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:03Z), 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/QZWFJ2576882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f36d757507d7ebd6ae9c4a288c7f7cd30e24e39c9fce82df4c6ecd2a66701. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFJ2576883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8281980209df64a4ff4c38d7e670f9db9c6153359f7adb753ce8b8ae9062b295. 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/QZWFJ2576884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7ccb7694ca4e742038c162d11a2b0a5849f4334a002589e44d7d66ac772ae. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFJ2576885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab19b62a451704be6442806583874ac9812437b9b620c537b19be7ca2c2fe00c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFK2502016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ddece6b90b5b5571d7e8c7783c0c2f4cc2bc98c96990fbda721f6cddc55ae4. 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/QZWFJ2576887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784d97f162322e12f4d273ef6c94532314fdec647892638504a0436c0222b136. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFJ2576888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63a422b4e3f9c45db826437b685cfadf4a49ef74d9e9503c68c3bb4eeafedac. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFJ2576889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73090edf049ae5398d8ddce85df65c6826623c40b0ea71e9cbcbee4d76008e53. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZWFJ2576891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197ac4e511bd5b9965b1bba25d40c4fbc1f2ba4e19b621a2ff739eaf0cb19d46. 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/QZWFJ2576892.