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 0xb257d9c8e2536d653a2b41e3f46a55353bb20c5c99a60eecd9f72472e2a4208a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/869b5b39-0336-4f06-97e7-e2ca9ee98d34.json and https://artists.proofprofile.net/proofs/artist/869b5b39-0336-4f06-97e7-e2ca9ee98d34.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 0x6b77e048c1fe4c10502b2ddff9695f180400b9fa6931e08dbd743ed757d3bf83. 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/HRA8C2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5891db7d3146491953fee26383b71d10d7cdfa5c757b228f595d8085b6db74ec. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:47Z), 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/HRA8C2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b2c3fe914f7bf25506ba75142982e0762d3d508be102d9d47aa974c595f249. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/HRA8C2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac10d732c5770e363a5d51f1210ad80033668e78df94422178757899b1e5826. 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/HRA8C2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e575d82b36a7ca4e907c2242c0bd4511d9ecbd0d17377b623059c5b95585a1e. 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/HRA8C2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8653d12a02b57b1958d4affa0cc65292c625f712e27971b579d5444229ba0b5d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HRA8C2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617cab2a6ae331e2c18ec25d56fe7364f8b839b2c799273dde953229fcbdde4b. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/HRA8C2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f27e10cdf905a790a117a85ed587083b707f0706c1c0f0445ed3884458d53fc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S2368878.
Teško Za Shvatit (Official Audio Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d7093c517726eddf7b41bc49b7d97178b0ebf171dd6c07bb5c852caa956edf. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/HRA8C2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98541034588b4355fdcedaefd42dd4322aa86eba9d362afb0bdc933b5e90b6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/HRA8C2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc129ee5f6f0f03faa2009b79752d743a13b35fc06fec6d49d9d50eeb49346989. 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/HRA8C2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dc98d24a5c91949d2d4bce1286a53cdfa74a8a6006cd10b48b603a39434fe0. 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/HRA8C2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63e2382a87a194de74bc3ae920c37ce8a081343578db160b35945894dbe1e46. 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/HRA8C2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0177515b5430753f0ddc7ca2f770c361c2a53224b7eb8abc4f91cb9122a20a3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:34:44Z), 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/HRA8C2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e4de9c9f2cd6700c551f25a4a96f8cf5575ce779b773894dd3ffef0277213b. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/FR10S2589170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9e07d2411de03c49fad34f006ab831d6a6095711bef6e54151f461aed5522b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:46Z), 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/FR59R2544102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c42857cb0bb4fa7ffdf3008ecc31e8e933a13dae09c3e35ffca8c347c0546d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R2550443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93baace7a177ee4890fae7545c08383f2fb865106d7366b52b881d1892b0022e. 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/FR59R2550441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec08664df64f4035d7f498aa87e30bea1e25bfc0fe9e3972d36273df1c3271f9. 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/FR59R2576605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72dc91ade55b91fad201b53e8760ed1a4b94309651555f9bbf3a1ab9b26274b. 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/HRA8C2500187.