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 0x28d112867f4f752d1dcecb7fa3c35b151ac6e6b8f0b2c960ad0f9e77f3371c88. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6cd067c-fe64-4acb-849e-208b5971a9cc.json and https://artists.proofprofile.net/proofs/artist/b6cd067c-fe64-4acb-849e-208b5971a9cc.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 0x53fc547261c54332cc5ea0e167fe1bb96929ff4fe771cacd8d1d7ab251d96e53. 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/GBCCH0300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a08ea2efd3fe22a6e54eae0231b1af976637b44bee8da14bbd6d0ac8aa69300. 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/GBCCH0300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150067342cf7f3d511a1de4824db15d2fb85bebfc03af9f4aadc56e9d7196527. 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/GBCCH0300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631253bee44eaf666d4a26764d848983f6c09b8bf26f200b9ced60cee0e97f3. 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/GBCCH0300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e60ef5beb3cec577db63d725bfe7c8dff6275cbc5b7ae07b5dc22cf29c565d. 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/GBCCH0300030.
Too Right - Drumsound & Simon Bassline Smith Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10436ab2b3e9cafd4453dedec448444f3c6fbf148b7c2fb84e1bedd4580a1511. 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/GBCCH0300031.
Angel Falls - Artificial Intelligence Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcc18104e603ecf890d71051ddd051eaaab383410e3105101cda4b24f16c9d1. 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/GBCCH0300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144aa00dfbe38d2dc560ee1872409762b12446afb154f734264923434fa5fbfb. 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/GBCCH0300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f840795943d90c507e0f68bf8a22a900c3b620cb1b2a8992bc4fd2a3c652d62. 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/GBCCH0300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65af2918765f1de7ea807b730418129035b4bc477446f07d2b0e4a1c5286c68d. 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/GBCCH0300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d23ddae84d56b781355c127b5c066168914ad57c8404376914fb3f27f81c4. 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/GBCCH0300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe503f888a6adc5ec1d871cb84e4d87b7266294f252832ac76f5cd3dc70ad72e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCCH0000315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff5f5932f5f07b348be2e12b527907c0049e5f6d5037a3f4f7f86850d240af8. 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/GBCCH0000316.
Miles & Miles from Marz - Instrumental Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b90cfc74e1c9cd2a62833a123683c7dafaf10581e33740023f75a4f106df36d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCCH0000317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a71850c6adfeab9f1bb0952174b7ad56c6779b6d52cef599a546a46cc69a30. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCCH0000318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a612baed669770496937d33da3ec48aed55062846aae8cfdb1a10a0f885642c. 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/GBCCH0000319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c150a78ee683d269bbece975426423aa1c725ad6a8373caccfb1b0a2129473e. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBCCH0000300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61389235047326d9a24a72f24c8750968525bf5189453020c2a5b23f3cb987d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCCH0000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2edf42cab5fbae2e0f651043e2d89f3663a44f233f647020dd4b1850bf85cc. 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/GBCCH9900234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a3f14509fe20f31b10b7549d7457c5e1edbcf6e502223bbee60a3d57c4e6c9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBCCH0000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f30218f9b4f72312eabbe075f56e01cc11664449ad14b9e0d0d3fa8f74ba45. 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/GBCCH9900232.
Progression Sessions 5 - Continuous Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c19a61a2985968cf47a0bfd7ef9c223b033ad11d8981fbad060dbf9c3b28468. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHA531300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fa4baf0d98d298daff4cad14305ac9035f746025c0a089fcbfae7f06f6baa8. 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/GBCCH0200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3814a513895c36402fde60458ed43c2d7c8ec1d933995961cc69682632874b10. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCCH0200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bddb25960fb70fc11d1debf0bc3ce26394074fe47f113507226b3b167acf937. 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/GBCCH0200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3b2fdc117d742c21ea4fbce5c51f82ed193e82e75a9322addaf6a108515190. 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/GBCCH0200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3867e57dd0a38c45e5c1715ad961a09716ac2819499be18ea54a2648a5b629d8. 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/GBCCH0200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd0c707419dab9ed82431267a0fc79e40e9bf0357902c33adebe8f5434de176. 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/GBCCH0200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0f44eb64f9f9c8e83322ade00dfe00d12d6f3b7fd1b4189c6ef7caebc81eca. 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/NLCK41071205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295e3cd5dd2cc80ef2fd3079265b6a3de0cca12e5eab433f8cd54180aa60d09e. 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/NLCK41001697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bba33c6d5ddc4a8e561d650441160e2b3e854b6f720edc525657acd0225cf92. 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/DEQ020703345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18db9050759914f743adde6c30376b1b2d6f070a1bc7eeed12f117be3aae820d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKPL0923435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348666d5ccc014a94862f57aba85460da1426226ea8de679220efe7e88ce916d. 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/GBPAV0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72db095ba63589c0c8f6f40d14ee6fbea04314e17c07a158b8caf90ac3c1c956. 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/GBPAV0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df844b92e591a4875bae98fdc94b1c5a4dda6db3a7dc2f044c37698b557b89a. 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/GBPAV0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f08ac22340d1d54397a330cb23dabaa730cf6e440e6d81dafb9a227fd70683. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBPAV0600010.
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 0x8689c5dd7d259a3d4021393f78203471c246ba8426270845d585a000f70e8a64. 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/GBKPL1138384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16601c4d908829acd176778599a5657e670d1c27474b32593b5ee303b91514a. 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/NLCK40900300.