Iron Man is a superhero appearing in American comic books published by Marvel Comics. Co-created by writer and editor Stan Lee, developed by scripter Larry Lieber, and designed by artists Don Heck and
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 0x238397afd9da3f248c1c8dc9e9cc7ca1f43fe57d5ade538536f56e755ba021e5. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98c54c12-6a99-4106-ba17-3beec784afa8.json and https://artists.proofprofile.net/proofs/artist/98c54c12-6a99-4106-ba17-3beec784afa8.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 0xac548d50331a637626b27ccbae72f813cd99bc416a1575eac4a8b339a7b53356. 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/USKUT0901902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98612c501ce0fe4ec7b00dace34b7ee082548457bbfb9d8735b5e2758bb32b7b. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/USKUT0902903.
Iron Man - Black Sabbath Tribute - Single
01: Marvels Iron Man und seine fantastischen Freunde (Hörspiel zur Marvel TV-Serie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fde7e1d475080f4bc21e58382d02f308f1e97abf28615210738200aea4ea84. 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/USA371069409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f189adb260863397eef8bb22c3a63abe7769d587cc543448fa80298054ea0b. 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/USA371069417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffb3a3773855039f313e471794136b1c4fc66c350414942635502d553598f90. 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/USA371069430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6d76ac624b985c0cb62036e073e8b294865123cf3a4805d31c300c9b6d0344. 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/USA371069412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cc19ed04bf1d3cfccfca7934660832359d53b0a729037485bc108ee37f5e83. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USA371069424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7967d6af7169642f6c29a1a654b4072e4c78ce9a847d3aa2c6352038beb407d. 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/USA371069408.
It's A Long Way To The Top (Made Famous By AC/DC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b31a9efa1d0bd03425fe5d1eaa2237c264bcadafd1aa621ee939e6ce490a6db. 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/USA371069421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39438c0b2d13741f554f922ef0f178eeadaf5f869e629c6b64b26628523adef5. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USA371069426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73a5eab0bbcb52164268d66298ec80b64fc17d8935a34578d7b64605ef4e8aa. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USA371069410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68608c69849c8268f06d4fa1c33b1fc72ac9bd1ffd1d325ef4bb8cbb86b2df96. 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/USA371069411.
Let There Be Rock (Made Famous by AC/DC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3669a268730c7b3c8ff9a60a6979f5094228635824f23ee55314bd0ef17f438d. 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/USA371069415.
War Machine (Made Famous By AC/DC) Version II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3fae65d0d0a3157a2f8418a1a78a0ad5ecffd0f4d15a9df24c1aa88a5ec759. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USA371069437.
Black Sabbath (Made Famous by Black Sabbath)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbae9374fc62a7ff2f593e60dac2c175ea08c730b0ad22725e45ec1e40f05e6d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USA371069413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54cb5b713a65d41e6fc8494faf47b0bd193eb759bd8cd0ab7626b18e64f94d9. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USA371069414.
Have A Drink On Me (Made Famous By AC/DC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76f653730d894ded90acbb3f13924b58845c57699e718ea07273e724e21f921. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USA371069434.
Hole In The Sky (Made Famous by Black Sabbath)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6af5267f6c86e25cdabd23e24b8173e8e60fb3ea9cd87887e2ffedce6ec096f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USA371069416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa873ef8d6b1d7a4a8f2056cdd302048ce46c210df8391d586e94719a4280b4be. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/USA371069419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc490065b5c8ca47b76188ffb1244e573fdeb8020a0686848c42c7cf19075fb34. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA371069422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360e6884041fe59dfe7e6d7873b0d629ccf2788268422ed71afd976aa457ec64. 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/USA371069427.
Thunderstruck (Made Famous By AC/DC) Version II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59471f951d4f2ca137148963d185c4e0ffb56310cc8876ee7926d6dc3cb05e26. 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/USA371069432.