Tolan is a surname. Notable people Notable people with the surname include: Bobby Tolan (born 1945), American baseball player Brentwood S. Tolan (1855–1923), American architect Eddie Tolan (1908
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 0x2205bb6ccf46e78af45d2e7eecce8a0533599f14980737b63152651045d68e60. 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/1958a90b-3fb8-484e-8ca1-fbbc21bf6e61.json and https://artists.proofprofile.net/proofs/artist/1958a90b-3fb8-484e-8ca1-fbbc21bf6e61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popcorn Ceiling (Where'd It All Go Wrong)
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 0x4886e86dcaf86a4201024541137d5bdba7473c317a640158d2f63dc2e1c9f5f5. 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/QZN882131322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997cc0cb2aa06662f5af3a55a71225ed03a79e975246db88b3815a1e0d0fbb86. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZN882136145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d773362b8025265b01271e493dfc7aa7c53599a404f7bc3d5f75922e04ed729. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZN882215765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d397a9312f26444c196094222f7a2f8248a98e84a14c92aad8d448c66ddcdce. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEQ022384272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b172d90059b088db3151a5c257e02b533bea24bfb6285c213e873af6f3fab6. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FR59R2420892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb229439df8df0fe124e906be2ea249d88f61c4fbff1509247adf74844666f908. 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/CH7812404547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb859f00daaca458dfe44dc915717c1801e7123130f740e5ef9a4cf7055964af1. 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/QZHN32402783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c66cd0bee0423ca137590c37852f193384ee95d4bcb2e1c390278d630595fab. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZZ7M2407475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f7149d2e6b886fa3af928fc849057c91e63db3a40605540373bb27200b00db. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZZ7M2464639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40b27ff4f853deea6662e43b62ef85bb1498b148c9bba91970c6cd05cee3c6c. 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/QZZ7M2469481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1326f1b6c4d33f0f735fb91ccdcc7b97732a477c2b21939883bd37263ff6b485. 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/QZES92567642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3780c0bb197be35f6ea9342861c1629f06ad734b27c0ce8e0b941552c4bf2b52. 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/QZHN92541604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87886d37d7f10bbd7ed40fb5685522adca923c7c52a9ea008881eb64a4a5c628. 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/NLT2H2500248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485b27be4da60e2c91d7b966638e9148e74339eec2f2cf905198922e30c83317. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN92541888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d323e3df4961cdaa0032bc8a338698b5405b6d1bda6306bd39ca0a5412abdb4. 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/QZWFH2544747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456a814a5e3586b60cb5558cc40370a844848331d9ae2c1b33f0ebe7c88f67d6. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZWFH2556297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8e6416bfba1e6bdf4b4ff33e12eb33bd7d52949143bb7e7d395244d9226bf3. 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/QZWFK2587649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ed37b2db1fe36cef3f0f4725ff4631604ce64f39a0a2d9a895a04a661ce28a. 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/QZ4JJ1994397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194db6c79f2accb902c0aa1b60343166701bfaf3e661f5f003dee70acc5e930e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USANG2434380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11d95293f54d61ca319298f212f2e7dfc2c8e7268277cefd55f70185d9c6227. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2426529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d96b6d438c82651055c4e3e38594b77c75ec595cb2c03dce4da484f132c93. 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/US3DF2482031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f258f78484ad31494a00e35a24781a9fdbbd2973f864212f317798411668f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEVF11900834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d2bb36ba38adac1dc1e3e58705afebb7e0aea075759312eca089000e4ef860. 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/US3DF2472084.