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 0xb350ec04c35e4acb97316131cd9ae487b2f8bbdcd563dd59de500f92c3a22335. 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/ce5622e6-865b-4d6e-84f7-fc22d44be50d.json and https://artists.proofprofile.net/proofs/artist/ce5622e6-865b-4d6e-84f7-fc22d44be50d.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 0xc9ed56a3265823c139f8e923bb843567ede5bc19f9e7fff62a095b1d2397bc5d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DET951400484.
Ich bereue diese Liebe nicht (Die schoensten Stadionhymnen des 1.FC Nuernberg - 21 Best Of)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9197a09e48549a831435226817d72b5e490c5bdd58901bce7f22d04e7375e19c. 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/DET951400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e42f52e1fa07bc48ee78eb0d962ab69cf140fc84ca3679495148f352485639. 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/DET951400242.
Steht auf wenn Ihr Clubfans seid (Go West)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fe9664fb9dacb238d42ec12ea5a2130e5cbce4493c1a0635536aa6283277d6. 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/DET951400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a9624848a7269089afcb3b5413737cb6b80653fffcde7398a4919d3eba0920. 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/DET951400244.
9 x Deutscher Meister - Neun Mal Deutscher Meister
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6c70e3fe2f1406b8e98a681bd7b34b4f5036e41f470c16df88fbb9f0b8e78e. 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/DET951400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cf5241d6c19b5585fd8e3df5105931389acc7722543038cf75a19e266f10b5. 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/DET951400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d0b82c23fff2c6ceebd22ec4a46a33b88e0f1831945b5ad520274cc2123e5f. 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/DET951400247.
Unser'n Club, a Bratwurstweckla und a Seidla Bier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dfe5a0b89bb21a68e54cb01da543c4efc1ec5cda8a151a995234ff2b137f05. 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/DET951400248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d011ae56f844fb33c36ee8aedfebc79465d2164b90b3cb8b94bb44a86bc9f9. 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/DET951400249.
Club Triumph Marsch - Mein Herz schlägt für den FCN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ee3d1c48d18b5c288410386506d8c5fbf92f250151bfcb41fee82341e8b83a. 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/DET951400250.
Wir sind der Club - 3:0 ich war dabei - Club schlägt Bayern Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee6dae45d13a28eb085181bc8e4e3971fcc8ca04ef1c6673883834df44b40e1. 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/DET951400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbc4aa87c09e462ca6ce5e0a9d4780a4ea9dcda71bb9ca7c8693db516ad1f9c. 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/DET951400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1f081e42e6e633df9c594ac616979c05ce1366b7aa7ecf31b1e69a4696a1e8. 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/DET951400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ea71540f29cb7ef73ec29d9211ff7d5c56f9119755f5899d1a1f704c6084d8. 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/DET951400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5d99c1930b3b1a88f9ee473857b5c930d56ae0abfc13ef42d036b76ade6a0. 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/DET951400255.
Nürnberg (Moskau) - Nehmt die Fahnen in die Hand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87dbd96022f0dedfa10b446557a8225462cb190133251d87b30f30c67d10b53. 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/DET951400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016d505da4dab5fff097f28b7bec413bde6f7aa0da393afb8aa57a077c485f96. 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/DET951400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314f3decaf86e212ecc27ca3f7000bde5afb77ffdc715cb92c252167f800066e. 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/DET951400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd57e607ea8378a3c8b557a54b7873e0960e97162651c4c064674095d8cc062. 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/DET951400259.