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 0xedf0d7a1a1ff620547cd596d81991c737644f39a5846a96ffb27c99cf16034c8. 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/ec671c7b-06c5-4d3d-8118-3942d98c4c83.json and https://artists.proofprofile.net/proofs/artist/ec671c7b-06c5-4d3d-8118-3942d98c4c83.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 0x2c3794d2533924c9039018de9c9056afeb21ecb6370c14feb3e9333ac4b08c73. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZES92003053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69823425f4cf5159086b3adc0b3f015059a02bd29425319e043a31703034484. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US3DF2006896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e88d69b0f33dc201874724593daef9e26208c60162c8bfe8a5a256f4b7f8970. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ESA011869795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855742cf1f2ee86fc5ae1ec21bf41c8049bac246f375d612f7da7c113fbfb1a2. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCAFF2026781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c5305950a3c2632afd1654292338f9f7f10a0c82a6b7705f67812416a043e. 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/DEQ022110892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe677c443dc7ebedd1ff78349738190e16267a7879b762544e23ecb6b319d78e7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEQ022110894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f3d283eace6ab1ffab8756539eba21e456cbada7aa26f9a4ccb70297a083af. 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/DEQ022110897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7921d7c6c2358871dd862d84d231a7d7fab0d92fa5052f5a24c9479a7a83b600. 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/DEQ022110898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93a5efd5d188c41138551572f7cf6cf08790037e35b73faa906957ba4230b66. 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/US3DF2107133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4263b786da3fde4e348de88ce3352d2994b8d4024912d335801421519e438679. 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/QM3DF2153625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4559f70591d14601e3c765647fc5ea7a0918cb93aaa042476eb166e08d0de60a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM3DF2211472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4f6b9c5a524d157591878dc26c958bc4a1aaa28faeb1ab02df5acf8c73c829. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QM3DF2211474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f8b2bec0a92d54b0ab5b9d958b5a1d4ab883ecd47a17fe5377f0a91fd290f1. 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/QM3DF2269173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfadde610ca557fd9c551a055cfee7090dc74646fd6f54bdab5a4174c9c6ed8d. 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/QM3DF2269184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5662a5266221c6546170bee6c2b0566aad8ecc29fd9c790326cf463829bfde. 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/QM3DF2279260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47333d8bbefcb06748c7f2ca7e1e7149cdde411367141b36f2cc4c3bdb1591f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QMANG2204210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db12e7e672f78f2e49010286a0fef6c7e13f569bacef798805fbf6d44ad2993. 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/US3DF2515973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84be0eba235eabb1cf46af45bd21ce58f24318e7b1cf469a7935e2e8dafcbbd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US3DF2553206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af99a38e70d69b010b99caf4bd9ab992fb0029d6387c3c9133f6a0b6af3eb60. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FR9Z62300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41870aada9668d8b8229533f10e498ced4427c3832838bcfd6bef01915630662. 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/QZQAY2438190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af99a38e70d69b010b99caf4bd9ab992fb0029d6387c3c9133f6a0b6af3eb60. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9Z62300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604a9fc93b56d2aca092dca6289ed0aef65c38c66324b69924c99aed659e2153. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/UKZGC2304330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b12859dfbdaf1c82ddc94ce1d6071377433c6224952303e30092b1128994a0d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USANG2149680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a5298a3fb410e5d76b8f7ed66f967f49cc21604bd4e7f9e960d5c63d02fc6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2303320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bb23cb24776a0f1b67d785914861a29722f725b153bbced74e41bff833be3b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QM3DF2129412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482e1fcaa2afbb3fc61b1e474491f087780f45b4f81bf3e48dc35ee203b1fd8e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2305338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6db90ef21b2d8267af1402fcacffb770d1b48fcff1b65208db895a70e2ac411. 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/USANG2103751.
Lifted LoFi Anniversary: Winter Vibes, Year One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87865c50eefd15706703445a093167e3ef3cf36ae24c4580eead5d3e6bda71d2. 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/USANG2123722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291da905c7545d199aaf4253923a9d68b31117bed332516a3c0fff268b73f305. 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/QM3DF2205971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00d7dcc9b8c264c8fa587e1bc527708668fee6f53050df99102e9c3389bf33f. 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/QM3DF2202870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291da905c7545d199aaf4253923a9d68b31117bed332516a3c0fff268b73f305. 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/QM3DF2205971.