thumb|upright=1.7|A hospital mortuary and pathology laboratory in Bath, England thumb|upright=1.7|Inside view of an abandoned morgue in Deventer, Netherlands thumb|upright=1.7|A close-up view of a dea
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 0xf4bd0927fb9314debbc271b823904219332a778f9100f1ceefc664f3385f822c. 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/ec2f1674-1f3b-4925-9bdd-1fbfc8cbe768.json and https://artists.proofprofile.net/proofs/artist/ec2f1674-1f3b-4925-9bdd-1fbfc8cbe768.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 0xf899a1a78becfbcd9a99021819b7ac6f83239684d3d4ec05e680fc33c38e49a6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ32434904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaa4e2c971f0c084d167ef929f5ff13f27a15a1307577d8b441d742daa5f204. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ32434906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0335c073c06b9d3f0f4224b8a25fa57402c22fb83e53f0974ae81971765df42. 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/QZFZ32434907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d23556b747b415b868179107e1998ffe82b1412cb22c469c7aa653b8bc5474. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZFZ32434908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b7153ce9bea6dc16d3b58683838b0cc77ecaa886c4c510e3de467bf9eb7a5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZFZ32434913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a914c27b10d4bf629b718d0242760fbca1ea10d8af04726b0473b38bd1acd11. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/QZFZ32434914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf899a1a78becfbcd9a99021819b7ac6f83239684d3d4ec05e680fc33c38e49a6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZFZ32434904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eec6bc4ad26b23fa3d665a71bf8f92dcfd9a5d83c3fda536240ae48dbe1bbd7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZFZ32434905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0335c073c06b9d3f0f4224b8a25fa57402c22fb83e53f0974ae81971765df42. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFZ32434907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2730dfa4e953628e1ca491c0f48feb07dbe2c2e9ea13510c23a6508c6dd8226. 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/QZFZ32434911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b7153ce9bea6dc16d3b58683838b0cc77ecaa886c4c510e3de467bf9eb7a5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZFZ32434913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd120c5e28975e55c021e976ec3fa38a4b3b461c97356101b49df912e131749f4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZDA52482798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c425138464de7053bdcf040780877b44ff342ebbf56fc93ac98241d32ae5a07. 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/QZPLS2409305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cd554e384ca928115a7e29a47916657d4de4ef87d87a19f089b528b142c90b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBC2421845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecda947b44973e3abb04be88d7f8f3a705b472b61b4fbe8ceffd5c35989b8d7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBC2421846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cd554e384ca928115a7e29a47916657d4de4ef87d87a19f089b528b142c90b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBC2421845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecda947b44973e3abb04be88d7f8f3a705b472b61b4fbe8ceffd5c35989b8d7. 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/QZTBC2421846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515163c89a5ed2a2b148e09939f189a2fc3e8a45a6647c55ef9d940e2a5b0cdb. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZTBC2421848.
fuck it lets have a good time b4 its over
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94734a1d9b0c0b407f2389967f0865217a8f9f70a5aacb2e080dd037999333. 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/QZZ7K2469430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94734a1d9b0c0b407f2389967f0865217a8f9f70a5aacb2e080dd037999333. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7K2469430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b4d106215eb66b212436d4e8bd033c7c42a7ab124140134647699e0ee07962. 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/QZZ7U2452844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a7e57cf3c2c023eda2aed1812e4b70760def3a6848aef7dbbeeb160058228c. 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/QZES72532792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60281e2488fe0b72baf34e0faa7a6ca2fb0cff2fb0d206075cd80b4c66a5c8a2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN32534646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60281e2488fe0b72baf34e0faa7a6ca2fb0cff2fb0d206075cd80b4c66a5c8a2. 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/QZHN32534646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d0a91dd3efd712d3f7522438171cf7143e3e8be82eea9c21831ff7c830c8af. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZES82544175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309d26532c8dc2327dd669c1075433236af26051fe4e1cb892c55252fea82946. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QZHNB2533750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d46f7b41ff1a536e7200866070b7b3650c285290cf058c222465c1e1c6e063. 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/QZHNC2509758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e117e005f4d11dcfc3b0abbba69796d196d96795f60e37dc6621d5593584af2. 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/QZK6K2556876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031e6c82c2af9a28fecabd743411c627103adf0b14ab225547c94716b3a2d0df. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWS2569895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa163f719b34750f79c37fb8c972268021a15426511b2eaeeb7a4354b26dc4765. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPLR2569697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b132e34e3d5e6f0f5169f68e862dc1e8575f5a23babd88ce09fc82f5bcda9f5. 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/QZTAU2549797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10c8ef96f577ad9fd30d4ca9868d4904f24d0812622c65ad7112b0456ca2ecf. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAU2549798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400f45c5bbec0774fc9eaddd3bcf524a94b12d1fab1d95afac5dec7d7c0306b9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTAU2549795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa461567a2c512f7cb2d17e1590f10281198ad740b8a93623f83db156a80bf1. 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/QZTAU2549796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96f8448de4c46cb6967fe5d99b8a63717ee22802fd397ed468933e68034195. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTAU2549799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04cae887118cf831d49fab64b15e53810b5c5b3aa9a81809aa17fb87bdc9552. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAU2549800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631bac382004c41ed323b686a359ed752cdd6a22f1c579c2a3abf4ce828ab2c4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CA5KR2542701.