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 0x57530a4e7b51556e3324b236304889d1d1d3dc84db80434dfb44679b653c8fe0. 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/c0312607-04eb-4ede-81db-4decb284dbc9.json and https://artists.proofprofile.net/proofs/artist/c0312607-04eb-4ede-81db-4decb284dbc9.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 0x4a4e5bb4748fbca2139041f8f5cb0a96998b8d54b6b726f548926314d76f0ad0. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZNWX2490814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7840454a3fed40da2bbd7a2120c6c81d26f81bfc5247840587c73c275edcffcc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWX2490815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbfc948905da198bbfbeede8bb1f19c87e1e7416f4a5d8c4b046a9c4463122a. 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/QZNWX2490816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfe51bb0d831e21ff31609dcf0f25769597ddeeb49223ce68bed8b01082ccfa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWX2490822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581c9a0a20f8b70698afc860dd18f96e75bb6b16dd4c969b2f070ceb81572236. 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/QZTAY2417868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33763858467c50f2a51c2ba54d75dc1e149a9c2c8fa91b21a2648e195cd4de44. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTAY2417869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1c1437c2101144489e521b65a81b0971c11b27ebbb1bd089b2af63c5e17b55. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZTAY2417875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7498c0db4af808ed7be97365726ec176b5bfa738c341b72f0360a09d3d416aa5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTAY2417876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f1df7e4c96fd82d05ed84493cbfaaead0e5828b9fced3692d467435124642a. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZWFM2423096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fec16380a4d932c3785d700f7c74430f9f28e32d689dddcfea1676c355c9e8. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZWFH2425795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199a2402727bc8ac57a44518393fc11aed343c4b050fb685a22ea7bdf25ffb37. 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/QZWFM2423098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0736df5cab656c8202bf1e30ba4246080518a25c39baa57ae9b6cbbced58e099. 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/QZWFQ2497494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34e942cc06131772b5382d7fb6df88a9fe36422beab3203773ca84f91e6ba12. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZWFR2416831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf46dafe8b5e869591b3becfbf06b564611e05647b0c5bf5c578bb0a0d8f8892. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZWFR2416839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee54c94fbbb8e38d578ea4d5153099e3613326485c10cd1778db60d21182842. 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/QZZ7Q2401309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90468576f608dd0f148d53fbb3f4fd3b7781b6c81452564c564b2e778f9f3d1e. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZDA82554467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecc6228328adac46536e4b02eae81728e3f34605b1634c88ab5f146da0cbd2d. 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/QZHN62575567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ceda2688343b16023112f4c436232136d7a03746ab08317afae8cc622e41a9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN92538105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885c13f8860e21329c684e6b9878e342dee2d99c5632fb81b60646b46290d491. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN92539931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753e4247ff9e3ae284716611f4f665b7ace8287ff0b0673e3975a122a826d7a5. 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/QZHN92543000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8ff97add4a5be0153404c7402e9050663f3ab57e61ca0f08221a9550528a41. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZHN92543021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c1a4d26d3767d2cbb68abad9568740c00448f905d4916e4f8cb23b2b86f684. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN92559487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885c13f8860e21329c684e6b9878e342dee2d99c5632fb81b60646b46290d491. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZHN92539931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753e4247ff9e3ae284716611f4f665b7ace8287ff0b0673e3975a122a826d7a5. 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/QZHN92543000.
Swamp Skull Stompin' (Firecracker Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7c0ab239f23535fd92f1458ce3ca8bcb4e89f6f748cc1103de7e855dc8cb5e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFP2515259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c289d58439f6f174ff64e39eea39eee15cedbbf3a835564e42676ceaa5b9d0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFP2515260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86de2d1bee320dcb0ff4fa75c2fd54c5b8cef748e9f5d79cdae61497be20e233. 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/QZWFP2515262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c50460efe66304febef0a882992e1a86b721c6a0a1de6bcbbb71ba172a702c6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZWFP2515263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f37634315c43e3c8b63cd4020e4230e9ed4eaf7a7254c323d393c5bf77333e2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFP2515267.