Watson may refer to: People Watson (surname) Watson (given name) Fictional characters Dr. Watson, a character in Sherlock Holmes stories Mary Jane Watson, a Spider-Man character Esme Watson, a ch
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 0xa794fbbfed00b5590e0918ad29a07e9835087c8b85ec7ea147355ec6b4a104e7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f881b3a9-4604-440c-bfbb-363f1fde476d.json and https://artists.proofprofile.net/proofs/artist/f881b3a9-4604-440c-bfbb-363f1fde476d.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 0xbc781ddef38b1b2296e001aef3e0a91039a3010d311cd1926c61b33f64e86500. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPM2025678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae4aacc8118f7b6cb51c2c636eb54372c9b65bd1ffa5c09795b067d01f7013c. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/TCJPM2026793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b1889d5609fc8dd305c8c95996f3dce0e13a1ab66f98e1327d7378bd01c404. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/TCJPM2025680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebab592332e69f9799de0c7254cd372dea4a02fddc534d241170729ce91d915f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCJPM2025672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae4aacc8118f7b6cb51c2c636eb54372c9b65bd1ffa5c09795b067d01f7013c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCJPM2026793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b1889d5609fc8dd305c8c95996f3dce0e13a1ab66f98e1327d7378bd01c404. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:11:27Z), 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/TCJPM2025680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f2d6cb7736acc3aa18f4dd01840e49eab9072c482e1491f3aa02f476144b55. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCJPN2167764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c0e3945e737671ea36322caa9ff4bb51a42a3bc7ba20a3312f36fa0dd50be5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCJPN2167766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9ffbc48170eca02a0a928573acd1311fb79fb9bd3a3502861c4ce3cab97ced. 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/TCJPN2167723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045cba45d405f9a945ddd9ab0c20267c6dd061db447e7b7e2f5b2db67adaaadb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCJPN2170811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a29c9e22eb82aefdf8d4bed7fc7308759d32b015b43f231f6555bcfd1cd618. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCJPN2170818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d9c07b6a00c872df2df72f1ec7b58077c89846fba8c58213870a2c212c5b61. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCJPN2170819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702252b5ed3843d1be0ee7ce20e9d351af358c49d337f8c03263d567fb19c827. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPO2198223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80174a55adc3c800628f7b091ceb6c9c26a4858f7ed9d44962c099fd18c4bff2. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCJPO2198228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80174a55adc3c800628f7b091ceb6c9c26a4858f7ed9d44962c099fd18c4bff2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/TCJPO2198228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ec6eb779ad83658e4fb2074a8aecac19dd375dc3f5012343b023e3f401fe79. 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/TCJPP2159815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ec6eb779ad83658e4fb2074a8aecac19dd375dc3f5012343b023e3f401fe79. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPP2159815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0edd6a911693fe422a0f6402b54711b25a46ae9d0807756c49a578b6ff3c91. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPY732200188.