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 0x2feb71b8fe0be47d6c8f08ef41459466c4b27058dd662998213484207d5041f2. 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/7f2fd17d-b8da-498b-97fb-9ba376418246.json and https://artists.proofprofile.net/proofs/artist/7f2fd17d-b8da-498b-97fb-9ba376418246.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 0x62bb21bef798a4977436c81ab819accad110ae37786c975a0dee9a598291e68e. 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/SGW502552422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3680a4004c21bacd6c5e34ca90bda550156501e28692c84066e81efef7d1b3. 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/GXBAV2532081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e26debf567fec5af4868b073f122a25b94f126e7efedb16e6d70d67800a87f. 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/GXD7G2273026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b2d9540c5e969952c95ff191cf1acdba37c4e966cf876a125292f99d5006b6. 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/GXD7V2445222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf05e792c121ee3fc47547ae64c98ce739dec28029706c45d520d7ff99c51e2f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GXBAV2261485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320ab702c1b90c7631a38605df1b9e2104d13c13504001f0e3a2f3a27b375ad5. 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/SGW502416927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7d99ee38b43d415851e53014356e7a8d7a56e8417ecf6ac6b4eff25e8f63af. 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/GXD7V2407530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf05e792c121ee3fc47547ae64c98ce739dec28029706c45d520d7ff99c51e2f. 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/GXBAV2261485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320ab702c1b90c7631a38605df1b9e2104d13c13504001f0e3a2f3a27b375ad5. 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/SGW502416927.
心にばっちりぴったりしっくりくる歌は未だに見つけられてないままe.p
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e29950def2d32c00199cc6386417b52d26cf3f0d14a24b820754102ae14cd99. 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/GXBAV2492119.
最低！最低！最低！最低！最低！最低！最低さ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe5878a514b97469cb73a9b463c731fa185f32ce27fd6703ba0be769b476f35. 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/GXBAV2492118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c32adfce4e5ccad3d3e76f418b907846877f5341a65c8bd9ccb37a8cdcb775a. 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/JPB822302870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a1452bec16cc5984481309e8f1cc23fd2d8eeb8727c15df965ba8e7cc1f1cf. 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/GXBAV2492120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c32adfce4e5ccad3d3e76f418b907846877f5341a65c8bd9ccb37a8cdcb775a. 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/JPB822302870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f49d96be44100041d71020a2b2585fa80f51b669e93a5b43629d8e8d20f6c90. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB822302460.
憂鬱だ！憂鬱だ！憂鬱だ！憂鬱だ！憂鬱だ！
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093bc94e9c7ca265fb43cd5ba9b301ef7eac3b1ad7da61227f397790dd4e9c24. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPB822300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ea3f2078a549224dede4972a878d89ad549e4854c4aca3b902886466ea1e3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPB822301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fa0cc14a33ed51553d193b9d7d00829188213e4686e3c361c0c9d922600a3c. 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/JPB822301530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fa0cc14a33ed51553d193b9d7d00829188213e4686e3c361c0c9d922600a3c. 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/JPB822301530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ea3f2078a549224dede4972a878d89ad549e4854c4aca3b902886466ea1e3. 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/JPB822301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093bc94e9c7ca265fb43cd5ba9b301ef7eac3b1ad7da61227f397790dd4e9c24. 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/JPB822300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5f63fadd8b1473c18d8ad0dd5aa4ffe74404254ecfb3499c42c3b2bc6cd886. 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/AEA3A2180969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e26debf567fec5af4868b073f122a25b94f126e7efedb16e6d70d67800a87f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GXD7G2273026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bb21bef798a4977436c81ab819accad110ae37786c975a0dee9a598291e68e. 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/SGW502552422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3680a4004c21bacd6c5e34ca90bda550156501e28692c84066e81efef7d1b3. 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/GXBAV2532081.