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 0xddb856875fba51c8117166960cae2833f62dc15c58ea0821fa62bdb945721bee. 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/17cb5c1d-6d85-4e93-8f0a-963198067454.json and https://artists.proofprofile.net/proofs/artist/17cb5c1d-6d85-4e93-8f0a-963198067454.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 0xea104568917c4ef7ee16c827508beb8151a7c1887476f87c50bd917ae4869f1b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BCDEP2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c15cac0bfab34111580c88e3939ae64779a193e37a5f9f6d4f58e2a18b8ddb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/BCDEP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3820703c4b0a7b88f65aea45a452e45ebd3136b6503856f73b058a3e2e898ed. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BCDEP2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca509d91724d927e856968e3521ca708425fa78aa01dbaaa9e5a964827276e20. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/BCDEP2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebc1246f7be57254cd19b6c1b2f10fa49ef683dec0f2655ab768b6073dfa505. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:44:04Z), 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/BCDEP2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd7a995b736421e84b5502ec6d3fba4bdd4dc7cc3462ba58e2d0566b1b7be71. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BCDEP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd7a995b736421e84b5502ec6d3fba4bdd4dc7cc3462ba58e2d0566b1b7be71. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BCDEP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff635327794811a6024288ff3ffe860b7068401c61cea167471ebf0824da47f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BCDEP2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff635327794811a6024288ff3ffe860b7068401c61cea167471ebf0824da47f. 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/BCDEP2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8e2ca49235146c7551318b17bd170ca8d7d5860120ae3c5bf1b09d9198645. 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/BCDEP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8e2ca49235146c7551318b17bd170ca8d7d5860120ae3c5bf1b09d9198645. 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/BCDEP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06fe1f676adc4075bd6d16370dda53c0a0219071d572b33796b134a2afcd608. 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/BCDEP2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309abc699ed24bf8d52dfdf6da85c0b3b1b5ae8373bdd3595e15c1fd5c30e655. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BCDEP2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7136574c0b4e048f416997e2c90dda199e20717b864f0829d2d11c1165ba7. 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/BKO882400264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34026fb7b75e536fd1432d1dcd60af56889e9afb3da2f5bc352daf84822997a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:59Z), 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/BKO882400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3d084c4022a425639c6f04a1a2f1fbd0afa898b5fc086206a8a882df52cf24. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:40:59Z), 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/BKO882400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa05155e10602e29e297aae4cb93e2bf65bafa250a48d538b1c1b17e2a11f770. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZW9M2452851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b06383016ac85b582cf685425c68c3afa6caeda7f52190edd7d775abbfe17. 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/BCDEP2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4700f8b2746eb0f6837eaa1786c2a9b9223e0dc60800d790845cfda62642868e. 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/BCDEP2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe310a561e559eb43024e10dc6e752834f99ba4e19e69a176573abd297b02ed5b. 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/BCDEP2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fbb51013b59567a501a60b7ae27ba2f89a88b4b527af12eead6d039b18853f. 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/BCDEP2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d3aa5c84f9f922fcc85a8a5a1fb1136c2095c1375a7c8661f3cd04730d6e02. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BCDEP2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9651422a9630ce27c9a2833fbc4b18c97d8e3458e1cab3cbfa9f9175dd3ea9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BCDEP2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112476c4feadbe72eb087ae086f1bf96fa347d7370ddbd2faa95f42228099336. 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/BCDEP2500024.