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 0x5a53b6ae83ffc251f235ed30abd7ec6967151ce2fc5c09813b6b550cdeaad10b. 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/67c4d013-edfb-4252-b9c6-97c83c04ddd0.json and https://artists.proofprofile.net/proofs/artist/67c4d013-edfb-4252-b9c6-97c83c04ddd0.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 0xcfb0f898f9c78de22e6ef42ece902539784133c5dc9b83abbbf30b6429f43b35. 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/ATAV62000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbf8881a341a588b8362ec9f2d39d7078791230886056b371fbb0cf2f1bc5ad. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/ATAV62000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24836c76b13f55035e105e9d7e9513fb78a65305ff25172fa9f184b92187daf8. 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/ATAV62000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54626292fe71fd37f46f16201abef269d0b4f70e38ab1f93b57a4a8936a79463. 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/ATAV62000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899e95dd5b579bc7f64ee4abb889658cce3f2383d4f4c27119ebb987025fc85f. 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/ATAV62000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8a5134fcc22e5e5869f381f4bba11dcb60afd340abd5b770d98e180acde0be. 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/ATAV62000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65468bb92cd11c994adfe8a945487a20e72199168fe17179f377dba9525c5aca. 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/ATAV62000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8880c5be6a3bcb29fa50b9bf4f0971aa1b0698b45dcaf5289dd4a426197f54c2. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/ATAV62000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cc45a1250919579486efc61834e7fe51c708739d53acfc9ab584cf239648f1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ATAV62000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8c436a139abd5fd4c0069e4c745720617647348049a792ee610bb6dd78cdea. 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/ATAV62000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dda2752a6acfd904121453f1ced0ee1f038bf0fb662515e432a477a379dcb7e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ATAV62000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9866045fc9b08b2f68a3d826b90251a91881d9fe46249fd6404bf68cb52d5e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ATAV62000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8580fb2ba5ff44e8659a6c44fde1cfdf0d2b0f67fd0f17f9aa7574331e368e3. 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/ATAV62000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85260f9c2e47319771ebd15e058819b6f0dcdac5736bbc10795fde6e3582bfd5. 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/ATAV62000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42731eb2edbc6cd8c26e456364777a89c6956dbd5627c4de1829a3264927ebf2. 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/ATAV62000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10eb3f0aab5f8ad3f0002ff42325a5e1d323dd1a54f2a97870f739275ee6297. 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/ATAV62000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571f55edc3c7359545d35501731d8c3a6f5bc6beb68fbc8e77b3a0b97b0b5f4a. 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/ATAV62000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83014cef7dcdaa8c285efefd1d05dfbb2e5c9f8ee3b656aeb3852aa732f14823. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ATAV62000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128884617c6d8cc51dd9a5ec05d3285afbaabf5ab9b8f7782db88f8b128ef10b. 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/ATAV62000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794051d502cf8c9f97092405d92ddfeb2c018c7f0be6d308aff0850b02dc85d0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ATAV62100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cc92ceaf7c7631ef69337c7a3b8042ef05315a894b68dd2154192e0226419f. 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/ATAV62100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec967278f3690734c2d432b0d49dbecb6846c67fba24b3671041ac3ee5891906. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ATAV62100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bb5d6a3624adab50c0a1dfd4b05fa605b4e4473dd81d1efabdbb7fde69d028. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ATAV62100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ed8347d07672717ffefb15432224210ad7f3fc61f6f68db994368f2a7732f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATAV62100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504698f171842821c0a9c4a6764a43cf0f7500f7ec0b31ad10f81b41647b91c3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATAV62100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5165a8236660c3a34ac4b890c1599d6e27049ee38d22f8e3d22da68c73ebdd9a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ATAV62100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eccf61b267151559250696446d8e46d772418b9342001223e95c8eef6c1c455. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATAV62100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe2128a61e325775c9cbce1dca7e4b7decb7b0a07b0d2d18eaf94186564e05. 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/ATAV62100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8199823476170c94372fdf248c8d01bd2051858caa8767f315a316feb03edb4b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATAV62100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb228c08147212dc3f870f5f042091e5e25c375e178b418b4ff54d86f2ca732ad. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ATDP32205003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ebcc4e09fcaa803fe1b8baf38a42c070e566f68726db140020c35ccfa93dcf. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ATDP32205004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdcb5e0456f490eaaa884eb248292f6498a0b0a8b1e251a3886078973830718. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ATDP32205007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab74ae4225c2e8ac5814759e5d60abf22b197648fd0427045155e13cf3968357. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ATDP32205011.
Vierteljahrhundert Dreiviertler (Arr. for Strings by Karl Edelmann)
Poldi Boarischer (Arr. for Strings by Karl Edelmann)
Augenstern (Arr. for Strings by Karl Edelmann)
Diplomlandler (Arr. for Strings by Karl Edelmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97806dd16311399b066a16abe527332e39100e628132ccc6def97209a0bf4b8f. 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/DESJ21900443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030345e37e93dc45b71c60d130d5c114f22b5e77826053038892a59588c85ba4. 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/DEFG22363919.