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 0xa8f808a0d8d37efd20b7c29b2c54ac2be77a366a584380acd079db12430cc070. 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/7668d526-cb32-49be-bc19-52dcacf28443.json and https://artists.proofprofile.net/proofs/artist/7668d526-cb32-49be-bc19-52dcacf28443.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 0x3cca442e7b1989f3c33f53180ecd212ff0ad0e5bb0cc5164839f53d1b193ea2a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:48Z), 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/JPB601044203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd20a9baef457a918e755823b8131f577b6da4a3eb0b26f5a0548519ddf15f18. 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/JPB601125102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97070522f4a0804c2c5337aa2994f7272f4fdccc0d929f2b6374e479cd351f33. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:11Z), 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/JPB601148201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210be56aedc24620949296208c7acf65ea51b57eeef066528098ac4632de7f26. 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/JPB601225601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b18eb8e2e5dc927d93a63a2ec3af2ac7448b8810e15487624dcc5bea250b07. 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/JPB601502783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4822f227ff4a38b81da4f34b178989855ee2c2d72938f6b47a0aaf5a188d901f. 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/JPB601601059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104e0c8d098d6f4a770c435143b9c0fe9db474adb2499bcf26dc3884ec658c8a. 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/JPB601602385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafad823348e17d5721393bed18a620d2967eaea413082cc88bc6bb71c77c15ed. 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/JPB601901417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd056745dbea4dc0046f1939f93180ad2461b10504af38e7af5c51779ddff7f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPB601701408.
明日を信じてみたいって思えるよ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3751b53ef90afd61e2213ee1a9ef61a48a94c52594ac5e5fb14eb69a158aa3d. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/JPB602102168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9f5070cb86cb53bccf7a1de185a144e8cb306ef0ce50fbc397d6b7f26aeb90. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:14Z), 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/JPB602202260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e210e77f5bdc4aa1ebd78dd02231444c39f92f640a85ff8ffdd95bb507b0581. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:35Z), 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/JPB602302436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d141f1ad7b3cebb57aa7e4483019d4344a3cd8cae3fe379cdb6672e0995a32. 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/JP92N2462313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec8db965f8609e61b1d44f82edc84808a1a880ebc0017a923d28952754593b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JP92N2517502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399a9f4297f5c2a6ca42f61854cd8a5137f0e63a7afd01dad00918e8cff92786. 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/JP92N2524426.