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 0xa0bc48a9e28db9f5be88a2b3c1223baac1f92b56dd95f8264ff956db89aa2604. 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/a6bf732c-47e7-45b4-a148-11ed629a458e.json and https://artists.proofprofile.net/proofs/artist/a6bf732c-47e7-45b4-a148-11ed629a458e.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 0x71b2f161dc82c5cf3f686e5f3c0253b8ceb2ab4dd75c457e16d4e5d5f1bdafbe. 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/USTCF2401247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb01ee50fd3cebf91b626056ce12a80cae7e099dffc58d072d1b6460a97c0ff7. 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/USTCF2401244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab57c9747625965adf0ee6f838149bd1298cf76032e474e0d0bbb05d73cd9a8a. 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/USTCF2401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb75a9e3ce3942ec704a07065113fe48bf5f8552c97d2a21f61176de099a55ca. 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/USTCF2401238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847880c583c94ec11506f97fe64873aca49591ef8ae349fd657941065be51d6b. 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/USTCF2401253.
Everything That Has Breath (Praise) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd3ceae2e1433f31eebe9c46b2a6f48f1bc1377480429af7c1173d742debc04. 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/USTCF2301121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe628bfe6915b17b99cb056d31b769b149757584132eb7ac080fc50477fa44ec5. 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/USTCF2301122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b35f4188fd25e4a91c1b080b14e908ff981f28c5347833fe6b22c79b0f9a6. 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/USTCF2301123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c244590c2b16aaabe8203b9397f1dddbc7157370df4c600e15152a20aff4029. 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/USTCF2301124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2b72ec2d9a0d010a949c77759f091d8720f07516cbc1b33439c29d1e7e0f00. 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/USTCF2301125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38445e03822a5193b2a94cc16d6b7352c553d8008831d8e3cf59b1d0cfbf3eef. 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/USTCF2301126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf24c72ccd62ded4879445438b2ece8cc5d0cc5e4af2a3ceae3ca411be5b32e1. 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/USTCF2301127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a81d2104d0743dacd40cca92f197ecb712c25292fbd8a9b0cbe73c1d22ced. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USTCF2301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc433f3460a17b16e61af570f937bf9714dc06e734acc4214c05c3fe7ba3730af. 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/USTCF2301129.
No One Else (Tear Down The Idols) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b1467833ee9325613d8e2a4cc41b70b20554244546774c69830e33316ea058. 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/USTCF2301130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2f77d1597ba6c3ee22df4a571768ee1ebf6ef1fb76ca7fbffe7be066a618b6. 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/USTCF2301131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9a23a2570f963cc4d0d3168fce68448de7e87ae8d4f18ab7a4c1932f741063. 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/USTCF2301132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb982963a9f50521f58a8fbfe4ad1c64a66d4e1a2cc63e24fd14200b14af6c3. 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/USTCF2301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aa729f5f912ccbd9310b82276dc0091e3674b66ab51c428a2058c3d41f2958. 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/USTCF2301134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a43c85c6577c64d138efc8268a05f1ef0e6450d4c14ea783976c05ffe12754. 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/USTCF2401234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b35f4188fd25e4a91c1b080b14e908ff981f28c5347833fe6b22c79b0f9a6. 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/USTCF2301123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd3ceae2e1433f31eebe9c46b2a6f48f1bc1377480429af7c1173d742debc04. 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/USTCF2301121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed785afac7df129e6f5b8642da47839abbe04d566abe5cfd3766d71f057bdc4. 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/USTCF2401273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2a65e691f879979a75fab3082454b3a42e2e7af48f2f72badad914e447c08f. 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/USTCF2401279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8ef39cca5d2e49b062aac728beb2fc58087be7bffd7c39a1586d620797cb1d. 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/USTCF2401291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4847b6404de9c2cf76cc4be551c3315ac2d9e86f16d706a672389a2ce91a0079. 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/USTCF2401294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c796940276a325435b0c020107432e0ad3269611b67084c6cc2bcd5f81e29ff. 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/USTCF2401282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8818e4631929afbaed24ffb9079d35b27afe342ba53071c49c19a98a3238d20d. 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/USTCF2401297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18d9433e41da14d604f7afc68caae48120d0e57d9a2468515e173aae220de13. 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/USTCF2401276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb477014064e327a4c92b4bd5789a6ca4e509166afa2136ddef8cc1ae120cbb2b. 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/USTCF2401303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc429600cb65dac8c041a3f300e50576e7f2503a2cf09c02ba1b0711fc3253806. 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/USTCF2401288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81524315c9c6a9e110564cfcf1cdd1f57b72cd63d12e895b6003fb8715b9fc6a. 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/USTCF2401300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7da0965ed0dea74f064388ad8bb7db953bd2332cfb8be40ea8b5a270d68aa03. 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/USTCF2401285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2a65e691f879979a75fab3082454b3a42e2e7af48f2f72badad914e447c08f. 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/USTCF2401279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2a65e691f879979a75fab3082454b3a42e2e7af48f2f72badad914e447c08f. 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/USTCF2401279.