William Crooks may refer to: William Crooks (Canadian politician) (1776–1836), businessman and political figure in Upper Canada William Crooks (locomotive), the first steam locomotive to operate in Mi
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 0xd829a90316f5ec3d68e21a366738750ef9b29895fd08d859baca8e41229c8527. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1013b862-0c91-4cfb-a39f-ff0a424c851e.json and https://artists.proofprofile.net/proofs/artist/1013b862-0c91-4cfb-a39f-ff0a424c851e.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 0x949be0d59c75fa313a3f46d41e64e2f19e4f4643c5b6d90156a534255f98102a. 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/QZDA62073627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f9ad1411a79ba14901f36cb48565b85b86dc9fc44ee60c33ace23145d82198. 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/QZDA62073629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b119fc6004b3402e76e82c6ce8a12a67d13d9ea2d88e507b2043d35810de05. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA62073633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a97ce7ccbda1dddd9e9a0ccfa74e9192a15101e10f8bc531eee0ba1aef38a7b. 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/QZDA62073634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eedaa555cbcba718a90f0338cad5d79a1b0bb49b6cd26a5826d2c16124d2a59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA62073635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e263db16c4d3c8ac95447b2f1273c76eaecea385b80e6a16a8731d2f38f82a7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA62073636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740e934a1d928cd8ca49b10bfe0fd362215d49770614f9be4ef672fd7cb776e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA62073637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1d68a58332908df4e7048d8155de58905917c06733e67d54eec48d934ff37e. 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/QZES62290521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e293c522441e55a69d7a3b52dbbd8b1d79dee1edd9d7b8c01852baf619d7d3. 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/QZES62290522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb03b3775fcb58033490979c9ba1a9f59537877c7f250b6051d1e4191e2473d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZES62290523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e1e153985d58e8f016b7d4545409d7d866b3cefa11263b891d0a1b6e49c83. 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/QZES62290525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6716c297b75b803e2690229af800b17ead50db8790754dd818624461b8d1a4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZES62290527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c855872049dce34a90598d1459b65a59063184468875b25405c56146be8dfca. 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/QZES62290528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ff71de957edaea2039ef603ba82b3a50ab3470e0a6174f2dd194e41d1b7fab. 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/QZES62290529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f07c241091053bf01da0459bf505caa0749f75acfa6f0eae05043d565fbd47. 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/QZES62290530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d3f3d364cd83c71ef70207728b5986a0019e24d4b678a47ad7257f0a42b432. 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/QZES62290531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6200f5e0a409ef98c9e7dfad44e4e1e05edcfaf08dc2695776d76b433cd85b. 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/QZES62290532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1d68a58332908df4e7048d8155de58905917c06733e67d54eec48d934ff37e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES62290521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb03b3775fcb58033490979c9ba1a9f59537877c7f250b6051d1e4191e2473d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES62290523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e1e153985d58e8f016b7d4545409d7d866b3cefa11263b891d0a1b6e49c83. 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/QZES62290525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e29437d27acb52501e5c3406a0a6712ee9a13764945ff49e6078f3e5aeb4828. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZES62290526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6716c297b75b803e2690229af800b17ead50db8790754dd818624461b8d1a4. 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/QZES62290527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ff71de957edaea2039ef603ba82b3a50ab3470e0a6174f2dd194e41d1b7fab. 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/QZES62290529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e991079a809ec4b0469c07a55227d1edf2e4570df82ef0ae6e4d90eca1e4de. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZWFK2303901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e31ff6e563563296329cb9e650668afbd1a64ad3f0cb671c4f59ace28ec6dc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN92257340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0730fb166be6f2bf30bbe7441907ef7b8609617c2fdc722b2d2c2bda8a5be48. 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/TCAFP2137562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacc5a3030b7759fb52b0cee9748fdf3ccc024d4681f5829203267ae968f0952. 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/QZNWR2045299.