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 0x194b2337bb61cd8e3f7d7249139395b04dda0237a12e8d6e27f283ba42526edc. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1aaca306-39fd-44e1-8ceb-dd7653bea54f.json and https://artists.proofprofile.net/proofs/artist/1aaca306-39fd-44e1-8ceb-dd7653bea54f.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 0x5e0cdc3babddc69e50f6e32a6f2f77e297ad747cd0b7d33239f67f1186eb8262. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ES7221900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfc7800e86f311a6fa546a866c0a90c41c6b992035befcb30d794a82135984b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES7221900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee2814fd052b84d6c08a3f1bc1eeba6861f8363d07cd64fe1aa4fa4f4ffd9da. 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/ES7221900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacaee7ffdb2b35c68e3939136911b8533aef8f89efdb1dade76a046e570d4db. 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/ES7221900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aedae824cd512fe5f6493dae344fb56b2353b82b73882a10f7b2e483e9d20a. 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/ES7221900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03baf4ef19460255dc4b8d7cc3f96895451796adb8dd843ee008d8cdcae9a691. 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/ES7221900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3c6db88f865f820284125f7d73290e35fccf84c112ef6bd65ebfe2184b3729. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES7221900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6478d9b7d2ae1c5b28310d3a655459f40d5ba306fa8d761b77517e8bb6eb964. 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/ES7221900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa34022c841a42d47e4bb0a07361b06fac937205951c63f6c252ac18188fe5e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES7221900036.
Bésame antes de que cambie el gobierno (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7ce22da140eb336f2e37564c223349551474a6fa182d50495f55c4a9e2f23e. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ES6062303401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e79e6915349116f755976e5a87fd6336c18a97c3048bc93dbc2f003345065a. 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/ES6062303902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e950ce11ee406bfe850f74c6a6aded5985f7c17b7da57611b28464844dd29b8. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ES6062303903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c1c5955ff0d6beaff5a587aea38093245a0f533ab6e5d7f53f492ad58f04b. 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/ES6062303904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8286e1d6b832f574dc24ba71d5f407c7bd4d5dd277e217e261e04dc0c7ef5434. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ES6062303905.
Es más fácil entrar al Capitolio que a tu corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f57f2507a0818966b7abaf6283b668ae9edb306e5e455a3715fd8c05c32d931. 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/ES6062303906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b56bbb8f254f158666dfde7be00b1c9d6c2e9dd6083b1160268a00a3705c456. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/ES6062303907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83436d198af192c149f5f6f246ae7d3cf68fb5271f1b2e47368b85d918572486. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES6062303908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29fcb6e6e77641a27e9025d85ff8f0bc5e9a7499f42ffc6d0b7ce1f9ead2fd3. 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/ES6062303909.