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 0x200e6583db6a27c8fb66f949a05fedda3f2a0f2a420818ec230121616ff84e6f. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/291bab5a-9234-4639-b729-0f9da6b6bea4.json and https://artists.proofprofile.net/proofs/artist/291bab5a-9234-4639-b729-0f9da6b6bea4.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 0x11406dca3de15002003c6c074a5d0b29c46f24a318deafb9f2be4eb027e2051f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBHBR0402100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e69d18329d1ab04c686bfbbace109a463140cd4243f92e9e4540c8788ae4ff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHBR0402098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a70f1bcce9f68819cf31f484bf1791b63c060dbbba45b657e6e794b9436509. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHBR0402097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c5245c19d78aa20d72c25021d8f58fb6ff705e9b6f64a30539244a273122e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHBR0402102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f827bc4965743dd05646a0bf8119c724b66dd882c42e228e16699680e4f8a0. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBHBR0402114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a1ee0b5d57a946098b98cb6c8712a76598e610eda224ee82a2b0a68cd14f52. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBHBR0402073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622bdac6fb46c06190754d97a61ada2565b473ba6860371c7c3db839721a917. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHBR0402074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1787b07be07933d35c8e5b3025f6cb322e9fb7a892255e582f6da70fd282ddaf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHBR0402075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5decdd8087db20181e365166605a73134347555798dd3097296a003f43ac411. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHBR0402081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9762edfa229cf96ba49a881cd6099824eb95ee8d8b7905c40509f6fe62e0091. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHBR0402059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c21436d8adda165a99d3a3020eedfea44f19258c1e1f8834765eb3c7204fd5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBHBR0402060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8ce0fbe832e872944c34f63c685eefdf8498707bc5748514282c6183083f94. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBHBR0402061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d168336b615399e9c2637bbaee7e8e09f6b8d87716a407795fb9b00f36b805. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHBR0402062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72fbb91d178d53b6028d427fa230e8a80446d76fa23977c0f30bf7f430386b8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBHBR0402064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd4a89ae53c36b71f5359da6cdb858a90efdd9810439dd42fb87c93c5829be5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBHBR0402066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed9428e6655ccf8d96b9eab69668bc71d61522ea37b5ed65acd870b1db217d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHBR0402067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d3c4e6593238c41885a60d6c5c4569a437768866339153321f0ebe9784d85e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBHBR0402069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd5484f69fc4bf61837b0976b9963b93b60774c871f4518ec1740d6d5263ea0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHBR0402070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459eab6edd7fac6163d7347c74ac61c17edd390bbe9792c9762b4d7811d22d79. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBHBR0402071.