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 0xd80ccea852fcbe8ec1f48a9c40558cacae9446401662b804586f39c56ee2d1e4. 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/02319db2-3b8c-4ba9-98af-e2b5820fce89.json and https://artists.proofprofile.net/proofs/artist/02319db2-3b8c-4ba9-98af-e2b5820fce89.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 0xb63dae2e60bb2413abe11052c25ffec628749b9ec3d99f2a1993eb07261530e5. 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/DELJ81892839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f30611a673a8941178d2a2f62c67eeed9d3fcdc7bbdfb309063fcfbac49d51. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DELJ81894098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5487502a368d09aa58d75dd8b67694d6d09661406f4107a401cb29ede5db3d3. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/DELJ81897968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373f8d2cb1a4ac6cda3c373e77fb7868ed36ece9ab39228d8a53124f73eb9808. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DELJ81899024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66f530e5a45e6f1e66e38ef7c5ed2e0bac5ae70653b70dbb7a742e4e0daa7b2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DELJ81802447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdf0d5c69ee263422a28b99927a8f1a8be3e45ebd70ccd32f4bd2fca645201d. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/DELJ81810502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83083d8b89d8530554e87c14578ec59c208d9cdf7f65e2ff377c11869c14d48d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DELJ81814316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894a418051ec24bfc17642de6a3e73f0e9c08e4472a0cb694ecc501ee590a9f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DELJ81815609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56cab4ed04b08b0179917ec07ef84cbf2299f61e67d9d49b6869d33a9cc0d81. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/DELJ81817338.
Bonny dissen in unter 3 Minuten (Sommer Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a994856231f01782394511d1fa13f71c68efbeacfc808a44b907f090a1e80c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DELJ81945932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe811fef0a1f0a1f7901978992dd306a2fc84dbc30c6c9adae0d0f3c33e159757. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/DELJ81973831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee507a14283d01ac80da101590933ee54b24a0d349706186eba80b5e5a9063fe. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/DELJ82009827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21549b74267aec3ddc22f236fe1ca480a7104195ad3f15fc6f719d630629a730. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEZC62019508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276f32754af3628aa27ed4f180a161cf32ff4bb3d3c777c8e7144993797a6121. Chain 2 (Bitcoin): anchored in block 957959 (2026-07-14T05:54:20Z), 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/DEZC62043386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230c8048cd18daa2409769922b0d8bf68544bbbc5503996e5b5c0cfeb4b724f5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CH7812103867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de70ccbd87bad88d0ec7b7f8094f728f39c31a986c800429a2cf231ab5b4ca3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH7812111336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee0d3d306be014bb849868c07ebd0ebba033e32a694c0463baeb45f2c3ae154. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH7812111337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e3fb3230a83defea92aed1e62045950d1e094acec1294a61302129042804ca. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CH7812227244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b9266f56219fba978eca0058875ad7c6ca0c9a2e394f6cd68b1a2070b4810e. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CH7812233802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e2beba4c5c7f6b2e58e1a9dd2526dc9911f1892260a20e5b7a19cc542823b4. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/CH7812343967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b288395b5241347b46ff04bf064eb4c0ee1f6151e410baa9d94e5c25e985f4e. 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/CH7812352719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64ce515183f9591e9af9aef907b1027695aa97f25c22008d2c5a4d203345c2f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/CH7812352721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a655a6ba66e7a97ed4343f9cf2ce8232be21415a65819fa7446ff204391e11. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/CH7812352722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66347bd4ab3055ec641b8606e3d629fa7f2609bc21f3df2da7847c74b3d85ff. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/CH7812352723.