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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ba2957fc60c1f3a6f69a72360faced91047c624ad23bccbdc80130b55f2a46. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa43e950-30bb-410b-8934-20caa69c992f.json and https://artists.proofprofile.net/proofs/artist/aa43e950-30bb-410b-8934-20caa69c992f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c746647b2087ba6a8c1fd393342356c9fbac9d37319a2af3b522bc61fd17b4c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKKN72301801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b86c7bb1ee5eb206ea99f5b788f262905319623ca1697b6909de60c2b218d9. 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/DKKN72301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fca853d2bd3277d10e34eb8d77c8811ff3eb2acdd0d34eca9c9d74bb0c9b5f0. 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/DKKN72301803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ad47063347fd4f6b12fccc270357aa92f1266fc9bb27510118ef680c450f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKKN72301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032a36630212b1bfe9172276cdddca92fa40959ff011b7465196aa3b55d875c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKKN72301804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc4b3f8ce50d344565fca6338dfa84de1c3586f3bb42c6093a75e23e02437c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKKN72301301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3a3f9f6c561fb22d92e0c5556a5560eba89915bca3b5f899db9055908b1c34. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKKN72301805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d29878cbd70e8e2b87d1c0dfaf959b924b5608180a1bce8fd47edba7f72c4a. 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/DKKN72301806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32defadcd6fa213af877fef87bf00114b8ff57244f975770eb91c3cdd702b3e4. 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/DKKN72301807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44e5463f0cdd09093b35100cef216689595d137bf4f373930900d153a61ea8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKKN72301808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088334e49f4debe93882cf9376e06f746b4213b4247302b3f32430840ac7dd5a. 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/DKKN72102501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90807bfa47b2a5eb16ed5ec3da8f2c19a5751e0a688787314fbab38f59800319. 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/DKKN72102502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93838fd03ef785dbd504493dc4dd318065ba43b246bc8f881583d4bcb28f509a. 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/DKKN72101601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f365bde3738b1c5a66d5308983be95215a22f9bb8edf20c4c08afd74d71aa48. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKKN72102503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7e1655bf79bd4ed0ad622002116330fb744578a8b3342b35bcd2369cc647bb. 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/DKKN72102504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e90d162abdd03a7fc85a82d92b293533d01b5d1fe7e34f9d18196b0e234626. 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/DKKN72102505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29851ffcd7d2f1eeb26eb4a7be9de3fda5d7c2cb1f521a8eec578ea2a4f121e5. 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/DKKN72102506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d95102102a248a5993b5fe28f7e17eb3a3d0ab1ea0cf25958ea4eed70edd03. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKKN72102507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915be853a9031b8f712f9b0bc187572687b7f7e81caf6a84b6839c22bc083a86. 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/DKKN72102508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bd696d59c67c4e7f8052953cbc5f088c07fdd73978ee4c5c29957b7b3d491e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKKN72102509.
Sønderborg City (Live fra Musikhuset Aarhus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fca853d2bd3277d10e34eb8d77c8811ff3eb2acdd0d34eca9c9d74bb0c9b5f0. 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/DKKN72301803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ad47063347fd4f6b12fccc270357aa92f1266fc9bb27510118ef680c450f7. 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/DKKN72301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc4b3f8ce50d344565fca6338dfa84de1c3586f3bb42c6093a75e23e02437c3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKKN72301301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc4b3f8ce50d344565fca6338dfa84de1c3586f3bb42c6093a75e23e02437c3. 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/DKKN72301301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915be853a9031b8f712f9b0bc187572687b7f7e81caf6a84b6839c22bc083a86. 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/DKKN72102508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90807bfa47b2a5eb16ed5ec3da8f2c19a5751e0a688787314fbab38f59800319. 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/DKKN72102502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93838fd03ef785dbd504493dc4dd318065ba43b246bc8f881583d4bcb28f509a. 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/DKKN72101601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93838fd03ef785dbd504493dc4dd318065ba43b246bc8f881583d4bcb28f509a. 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/DKKN72101601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ce7852470245a0e32f0e54380a2348507a3ab27fd5121fb9ba8b9fd08c401c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUT21900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6b3b5c0296afd3fe4f40dd1ccb179998940ba6afbf430bc68edb26bca1c48d. 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/DKUT21900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b7992f7efe9581b6c99b03d6579cd1f5f8c47c8c7cdf52f8fa2bb22bd9caa1. 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/DKUT21900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0795d4595424f999f9ea3d6e784e78dce42c7ef1e9bfe0453d02061f3891e28b. 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/DKUT21900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224ff5c9c542b2d235d726ac6964739ef3eff577f3efd8a01727c99c329038e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUT21900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ff0a25632b18c2796ba442155c6e1448abf56cf2c7c9b118346febc1a29db9. 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/DKUT21900106.