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 0xf17dc6e5dae5d20a569a5028ea849507867edf6d070193000aae15fe4d51e0d3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9c9c2a4-ce2d-4234-84c6-4510361e67f2.json and https://artists.proofprofile.net/proofs/artist/c9c9c2a4-ce2d-4234-84c6-4510361e67f2.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 0x802695eceda91b5010401d2413be00e5e69359f3edf6a03e3f85abb1f421f2b5. 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/QM99V2309101.
Primitive Desires - Audiotree Live version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b451bfb8c4e5f12ce9ac30c7289ac7029e6f4569e4b69d7315f37430579b8e. 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/QM99V2309102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7faa42f9417455c26698a61f6125a9df9e6e51774d84764ff04b7d32f54783. 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/QM99V2309103.
Illusion of Choice - Audiotree Live version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1e1e874dc5f1219c24824f2073dae725483a71b7dbeb1a6a6bc0e750c48a19. 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/QM99V2309104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3b6ac16edd1a5eb92c873827fa673a0d87e55082ffaecd9d201b8563ecaab5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:55:53Z), 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/QM99V2309105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629dc3647d69fc912f06785b7afd00370c71c792f140a5f689aa47aedc8eed70. 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/QM99V2309106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadedbe37b48fd55d02bcf5c653c67078f8c99c2c65c225c2c8044352325de76. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:58:43Z), 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/QM99V2309107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0f5110d7f281d7ed6231ee5dc7574737b2702d127219e473f7bd33340be52f. 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/QM99V2309108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba4d7916405a188d173becf7219e89c811cc12beac6e5bde1347551a487693f. 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/QM99V2309109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc759a65e10029c9b5783ca502e5c2ccdecc33f9f906b34ccc838fc0845144822. 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/QM99V2309110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74baf8708766ed365daa0b3e6870bedaaa69e1915a43effa4100a84ecae6b187. 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/USHM92225644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0856dcc2632d888ac44f2652e96e7547f266e3c24c5ec83b787c5a90bd2ed42f. 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/USHM82238157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1010fcbb586c76afb8de9251478846f6569211d94b1eb7f0b47e47fde0627fa7. 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/USHM92225645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbbe8a9f8b67e7a207f652a2a56db921633679e62bbaeb16fc320aae3e61a40. 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/USHM82286275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed909c7725eee9e4e8ed24a1f7ee427138f5ffb6d054e765d6e9b558c5c41f53. 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/USHM92225646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbbe8a9f8b67e7a207f652a2a56db921633679e62bbaeb16fc320aae3e61a40. 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/USHM82286275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfba8828e3bb54217366dc0e5f6c39e0180e3ade86d1044a1541c4935a8aa4f. 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/QZNWQ2120802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57080f173bc1277cdf2317bdd29a178b6e1667de8216e3b2deb6f59c6566b099. 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/QZNWQ2120803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d9abd949c1497e64cc61ff1dc14bad33d5c2b0092953accf83b0cadbff27b7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWQ2120804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbd180a94237562d4fa3bbae4fb089292c34bde6d8b2d8891f941365792a5a5. 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/QZNWQ2120805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077b1ab013cd78910f6bd768b1a4f9dfb921b0397a976cdf4150bd88fd501e28. 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/QZNWQ2120806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d454a63579dc239f568dbe3512ef8a38825d0318d2d11a63e7ca43ad68ccfc9. 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/QZNWQ2120807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb3001ffed44a40f8478b6cc7ed1596f1faea6f971345fa2d01f0d7949ed695. 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/USL4Q2210387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe3fd22cfe6a433d29029015d8ceccb76ffdce07e18c87b89b1a8b7ead892e9. 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/USCGH2329433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466c3b438bf49a22c1f00c3bd976d4e5c6e53cc8476797f22e27d26639637a0. 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/USL4Q2262190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4b6ba7527c616eb2ce683a95a8fa0ff4e4b088e7cab4381a92f2c281dcafd9. 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/USCGH2329436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9233c9f49eff4f3dc14af752606960b70fe40b2ba4200bcd6df78498f3055059. 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/USL4R2240281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad5bd8700668e1fa404b4f5472fb18ee82f4bf5667a75a7db1a990f3222060e. 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/USCGH2329437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66b2335aad8ee5ff6bcef772461da7b2b7a7276615b690f84c39ccf23ff295c. 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/USCGH2329438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f124070a0db229ffb22c36339967fbcca965a51d32ffd917e93dff452e72f77. 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/USCGH2329439.