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 0xd972ba22975d36f7d406cc4fec4d95300660467fce2eca798cd98d6f28ba08b6. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65ba71a8-e065-4fb6-8c29-205e96be2791.json and https://artists.proofprofile.net/proofs/artist/65ba71a8-e065-4fb6-8c29-205e96be2791.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 0x46595dbadd042c58fbab4103ff3ae347c508ece8ab8f4b45784170ec07fd8b4a. 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/QZ5FN1755627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36050b47d57d5e44187fd308aa3891876860821ca4ba60e3b3a4f4e7b1a34ca3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5FN2099460.
Bassweight Records: Syndicate, Vol. 4 (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0a7f0012ae4b75de7570667b1da41582b6f693401f0d36f24e45cf90641bb. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USLZJ2032732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36050b47d57d5e44187fd308aa3891876860821ca4ba60e3b3a4f4e7b1a34ca3. 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/QZ5FN2099460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cfb61148ecf2c97461bfc1523381e98263640d93b4b588b5ceb76c94b171ef. 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/USLZJ2032751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a513b7cba105b7b4ec54e02ad7392ce8fa2c05c7c07c56a49e9a8e22bfb7a3. 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/QZS1Z1628270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffce7a1758489d58c16f58fc7aedfbf0a813a61afca791eaa4101ff5833c6a5. 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/QZS1Z1628279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a73f67d53d4cc503b3cce24c9dee9549ed93ac988b7e3581d8fa41407f503c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS1Z1628281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07e46e2113212912d21b094688e6e1a33e77e5dd8ceeda5e91418109b2e84f. 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/QZS1Z1628285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c90fda7ccfe049360e3d58272f9dbce588faf546fe762d1f75793d3c853577. 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/QZS1Z1628289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392073237dee0dcc2f2e3be7b9ec937d3da302974e208c82b49f7911cd380f9b. 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/QZS1Z1628308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460f42fda2b2479fb54cce3407ca60ced49e14da3e5d0dedf124b802ac99a001. 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/QZ5FN1892985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455402c47d8a91cde09e03ab29cae924da82a648b92916d938f1d1b6f9575815. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN1893050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9450cdb925ee4a9bb2928421c11eca5d8f7be6c863f387caa072bfee7bf476f. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZ5FN1893021.
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 0x51a0e34aea4170f837d7dd31c74af52096ad02acdf92ca7dbf112bd00494d483. 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/QZFZ21995542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacde8567622aa9b6d96509ba10a03a36de6ef2fac75f689f88c7cbb80208a397. 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/QZ5FN1954244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c5c1aa0d73966bfafda296e63b4ca9491d9ec2125a404d03a11191ed53bae5. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZ5FN1954235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9345e6d091e91d83fa80586e5486faee27b918290f94613c695df9aa1810be. 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/QZDA81985248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39b53687f95c22944f2555dd4c2e3d0ec2c4332ee8c91b09e3b789ad2b04b37. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA81981287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25306042cb14d5f3b758add037135a1fb744df2091a72175589dad93279c299. 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/USLZJ1712450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1626fe6044b7b5dd72b0e6264947c8d962ee2d8950909c2cc3eabe7cd43950f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLZJ1712453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568c82d8002cda4b2f41dfcea048996c2e2122b48d5f793b6ff54f4ace7de04d. 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/USLZJ1712454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c2b65877c926d892cc61856143b6a2e14fafb1831c8b14a2f7806289c77734. 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/USLZJ1712455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bf521127861592229ac139f7ad01185ff709d890a172291a4fb3a9affef915. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USLZJ1712451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d739008f193c0057c2a49be544422973dc7db36edb7b41871b216b35c143f9. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GB7YL2000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec95190dd222c447384607af0f097180aa70f8846b72734c0b839fd7962d410d. 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/GB7YL2000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cca299fda775c0789f368a635f3218da8cc687d9fedb27d1c20a8ebeecd1c7. 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/GB7YL2000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a7d8ac90c68b20c85124b2340537c07139d495da2c99f5617342277be1c885. 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/GB7YL2000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac056a86f6357d98ff0f7fc267219f3e3a5c5859b6b5855befb089da9dc6177. 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/GB7YL2000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa001e2b02772b019b2db23730334972f26d8688a43eea30920ee6ad33d8be997. 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/GB8KE1651635.