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 0xcf290f9cdae0b0a8a4d419df80430afb8a2f4f247e5546af2a19c00e8d627371. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b950c1a3-db95-496a-a71b-6f9218e9a3da.json and https://artists.proofprofile.net/proofs/artist/b950c1a3-db95-496a-a71b-6f9218e9a3da.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 0xcb6c00791d657417d9d9c33ecc3aefb88893eeac80a6a599f951629a0d2c076c. 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/JPES08504230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28381504d4e3121e329d40e8453795ed2cd3a5553920f2e44e56372521c7d8cb. 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/JPES08502000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb67703245fc8b2403d25aedf9fe6a425b4975c2a0e93d72b5c57e3c4202e7c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPES08510161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc03e0c31eb2091024d98a6c478d31db17decc53cb66a4a91d921cd8bb9c984c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPES08500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc03e0c31eb2091024d98a6c478d31db17decc53cb66a4a91d921cd8bb9c984c. 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/JPES08500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69efd1641a1f88c331801f790a806c5eb18ce33362b80bb01bcc5de80df43ff6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPES08500520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b0db17fab77790d76a9583f3484f78f156954ab595bbb9b35060601c59ecda. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPES08500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08606c50aaaacc192b3b386d61bcf078e978568fabdec981866053a0a187316b. 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/JPB609571101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780e88b8a9f06d1829c7050a8e8715fd8908b74fa4d1d6e8a3edb089c2391df9. 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/JPB609671101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a4b1907f876bd5a54c1bf2302c9efea3a40ef6772222dc27b7748f4359bd1d. 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/JPB609671103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8144ec883d93a67e50adf15bf42c57f94e619870db3e079824932f12b355cba6. 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/JPB609681273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d44a4ff46d28259ea539919fd311594295e169dda1ead65100002b6d8c2fe1e. 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/JPB609671104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4709d0394331f71d5b05dc44fd2eb459aa35936b92a39e1bd3eae5f464caa54b. 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/JPB600990003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3677a3b6d87a9c90f1a512cf7f0b3bf72a5ed44d39f7cc00b57f2e6cca8afa7f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPB609671107.
ふりむかないで 〜Don't Look Back〜 - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4523519df514d07778657749a5d0b4ca266c9b418a20f324c0e1d907124c3dc4. 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/JPB609670903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4a1e9892eba9a2a949a8e748a9e58af6570b98f8ba2084263a0847f0d0c332. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPES08504010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c4c895b55b3b0233f506bf03ac66a40e790a66420cb5ab825fccc103e81873. 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/JPES08504060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f4ae1e86d697ec08d5601d2c907fdd175b201d5da56c9db71be8fde41c5e3. 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/JPES08504080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd205c6209392f79d4347b33e994e676c1e4b2aa6af3001cdc24a04583f1700f9. 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/JPES08504130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd2742f9783ef56223c00e177eced2aa94f57a73a92ec46261ec793bdbe5b13. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPES08504150.