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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e28afc1a0153b349af436661a3d1eba889f09a634c169aeef54d90e27af46a7. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c80c294a-6695-4322-bc87-ad5216adb3a9.json and https://artists.proofprofile.net/proofs/artist/c80c294a-6695-4322-bc87-ad5216adb3a9.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960a76fd54fef3e8fefa4d39145ff38de43da6fe61b23620d0bd0abb20fd00f7. 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/USDY41782931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb911bc389a817f8b4ddb4cf248a0a936ca5345190491c42d1b71cc9e441d57a2. 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/USDY41782932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3318eb2ed46119da456107084d144912b98978b7a17eda50f7080b07864caae6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USDY41782933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2434c71e8bf261d01a004573a569bede6195afd47c978263c42c13ed9c5aaec. 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/USDY41782934.
La Generación Que Grita (Somos Mas, Pt. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0e101e4c39ad38652a65d6604ff4a8530bd29366f7c78527afedcfda2d1e3a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDY41782935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0953bf739274a0c6549caaf7632da9fee5c7e46b579f164a282d02b0560c10. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDY41782936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91a8639d43db908bfdf3aaa249ab16890af98c03c86fec32218a1e8d473d365. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USDY41782937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080754cf18af3cbef02d0a649bc007c68f30eb55848ec5294aa2c50855bd2991. 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/USDY41782938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d9bc5f64c3cd6f739adec0aa4e7cffefb7dc5421bf4ac520322f07fe7487f8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USDY41782939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f08946ea6a2e589dbecf2749c26e274f7aa629e7b4f213e160b81790f08a8a. 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/USDY41782940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7426f2f00a5b66e0d88511a410a4c3b3e2eddb41f5cff8980b2b7c64325ead6c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USDY41782941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723cf1f58191a8169df976406bc034f19eea556f552afd6f35aff76726bd36c7. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USDY41782942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc7391a0b9072638c9b774821a69e1d44ca5eac5a881581bf35208db8b51b50. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USDY41782943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccba1b379176c4d0958794343a1852da2fef93166d8ff7ebd59e5bc3646449c. 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/USDY41782944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cb4fb0cf7e59ef4e0a4b99b17dfc33f99115af45a59551f66daa743ae75ec7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USDY41782945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5d6050a1015cdf031a8462cc8ed601055dd267a8248d2f22c04c1f1f2d3c7e. 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/USDY41782946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ed0c1be48aa2482162479926a130089c8fa43eb7894e329949edde82634cc. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USDY41782947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15de3c93003b52643fbe12a814c1ff08912512dbec27146b6143f59f631522e9. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USDY41782948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029e8b6c1f533cdf285c20d387e7bf85499312a7bcda175dab74c64a4ceddb92. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USHM81849672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589bea33a48e7246e728eeec438e818d4ca36549acfd92c3cd29bcb99d434da8. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USHM81849679.