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 0x459da3aa2a30106a653585518a03f7032b3cd7202c80175d9a3202f77a5c33d1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/066f3903-1d3b-49bf-a63b-73b2f0ae49d8.json and https://artists.proofprofile.net/proofs/artist/066f3903-1d3b-49bf-a63b-73b2f0ae49d8.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 0x3e7b0088bf12de5d6a65652f4776928f464fe7ed2ab5e3d48aab9d473520ca5c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/AUMEV2396392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05ca1d430111aa8612d4fb486b3cc2fb6336acb1d4013dfd3c082e7dcc0e14d. 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/AUMEV2396394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9f12f79c55d99bbf7adbdb4c218de5f4c0a4aec65512715f937b50caf3de78. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:35Z), 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/AUMEV2396396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c10a5d9f2ee5b77811a22d24042d6556f504ac2772c0f1433c7378672e77631. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AUMEV2396397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ce785b5bf2ec711d6b9e597a3ebd62b00b7bf16728034241420b539eba1687. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUMEV2396400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b25788aaee39fbb2e9c551043b60631bed95173ff48b50c56ebe92ebd5531d6. 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/AUMEV2396401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dcd6d2e1b76b7d5d94907fc55a56f2deb311d54d14c46bb22def50d1acb859. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUMEV2396403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f30b1004c8f0ae92baa95c48f5ed5751e6701636ced8800ecbaa7c5dbcb927. 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/AUGBT2323109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60917d7bb140e891069eef7bc7775e9b9c89e974e12811d8472e6675383b694f. 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/AUGBT2323110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018a7061f9d49fb266c4a8a0b4ebd00aebba6a3e2eba16887fcc495fc50be4cd. 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/AUGBT2323111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc286c4b380617730d7ef779513915f281483c6d3a566f870ee35320db9493a43. 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/AUGBT2323113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e9ba5f9c24bf89122865fb0bb6606c0bb32f27e6921d7e41b00f3b478426cb. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:18Z), 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/AUGBT2323116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca3a538d479188b95c9b4639bb7374722a572c4a70fbd9519c55137b15ffd3b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUGBT2323118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ff391719914ffba0f3ce51f561ad7ddaa199fa53039a43cf434ca5afa4b034. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/AUGBT2323119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9df027107c5acaced54e8eddc192ef9dcf361462a52e0dc1c66d605473e81. 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/AUMEV2401242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632e25f4ac2888836a02a5ef75cb3fadf9dee77eeef05190d876a7477854cbb5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUMEV2401247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd7ba1cae927f78e9828f0588706a422fb4ea155534156f33b1172b76c9bd88. 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/AUMEV2401248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb057dc698ccf241f2a31e0441f9408a0660c30479ceefc99e67a80db369b0f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUMEV2401251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb23c77cf368a75d456a78cf3da58d4a506023f7de96afc1eaf27131708be60. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:49Z), 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/AUMEV2474049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315bba60b35b34f182c87cefb9ef4ff504ded667d7fdba323e90c98a82f47793. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:20Z), 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/AUGBT2479796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c7dc6d772f5fa922b668c0390619a66a695c0de3501491f6b8d58557254139. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUGBT2479799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dca26028532ba7bffa9c03adc61feccc53ef696d1bd52f3fa68b0412d89b4e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:15:56Z), 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/AUMEV2519716.