1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8d0af1858c7e60c1ea011f401756650635a6a5103d889acca9ce7a90f589ce72. 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/69ff93d6-fb60-49e5-a6d1-165d71d4d7e5.json and https://artists.proofprofile.net/proofs/artist/69ff93d6-fb60-49e5-a6d1-165d71d4d7e5.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 → block OTSBitcoinBlock must exist at that height 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 0xb8385f6fa13f980e92976b0abaf646567f06ea17a9c3441203ed1220b0f300da. 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/SE5Q51901616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c056419880dede240091256f10eab8841979cce6018d8c38215510bb030633. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE5Q51901327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff37d15a25cc6208aafaaa223bafb6d44c4c18b6eed029c3f8da9e3d43ca902d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE5Q51902516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e2ea8dc26905bd8b1c651f320408693bd9b9269c931073058b5e503acd92f. 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/SE5Q51903250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bada24da056bab32b65273beb31c0b9a2f0a63b90a5567a969a20fb8f3a1b29. 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/SE5Q52000434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf3fb2c21eb2f25e9771f1c6cd9290911a67addb5554c8c64170fcd2e929824. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/SE5Q52000467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfaafc3b230e464a761cf56bf362170f7a1f4aca3ccd66be6925a2602437ab9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:09Z), 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/SE5Q52000837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eef7aac5060f030762881d219e699ab567bcf878327e92ad16cf2e40a30687d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE5Q52001404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca115660e769b499f02f18a8cc13ec3a3e2224796fe447c0bae008b4744ff85. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE5Q52004055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cbd99292d96d1feb52f3342d0e5f398f63fd4fa93730a5cf74bc828d29e682. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52101991.
Fragmented Memories / Woodpecker (Call Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f187701478072b670d5d8289036a20119b2c2ec42a672dfa9f4ba93b8c3a3e2. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/SE5Q52200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7498c086418abc72df5e902d2314546530974caaec55ec60fd9ad608db6203f8. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/SE5Q52201268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa560ab926769fc5ba987a3ea522948a10be2b6c1ba6aafc383f5681ad9f24d6d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE5Q52203299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1547d224aae2a92815c47695c577ba26989961a2064f5363784d01f384a37d95. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SE5Q52300495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce143641e6b6da73d804c8025fef6506b640e577c489ce219ce8bee69d0e81b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5Q52403171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3462e39cd3fc3a8f87d20ebdfa215d500c9054e733924e491add51ecb0c5666. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:18:05Z), 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/SE5Q52402825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aba4de793ad6996fcc5462859337a8dc564fbcc3037480681ff30706581a5f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SE5Q52404216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb427df84a94db5a118ecec6b63f52ff69fcf7dcc298981895ae794246ee58786. 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/SE5Q52403955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b728642144721fb2cedb580092a3a9ca2646d5af4f42beec01dade4d09c1e0. 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/SE5Q52003357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3984dccf6fa96c10767e8e749a03d076ddc85c5baa4b3a988adbbd72a0260b. 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/SE5Q52002558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fff613d3c433f80efcd08ca1cdef924288f2e7fd1a045135fa2209001425b5. 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/SE5Q52003292.