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 0x6bc03f54e574f718f0b0b1858b49a5eabf4ae15421511e122c5b590db4eda15a. 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/5a770787-9f41-470e-a7dc-83b660d66375.json and https://artists.proofprofile.net/proofs/artist/5a770787-9f41-470e-a7dc-83b660d66375.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 0x872c66ac6c1c68184b27ecb5589903caedbd94651285f692c551396705a15e79. 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/QZFYW2050460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba597f5135c1721826848d9e040825c1c379fd4b6fd8371ed9c16e7281b55b7. 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/QZNWY2027440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd371c4648182fdc45123f5c98d725d00117f38e59d30e6298442f96ec121ae4. 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/NO44B2402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3f0c7493a4356bfabb435b5b751f37a513bf8306ccb9e62168b6e0501c9997. 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/NO44B2402030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6a09ad7dc1169a88e18c448c50f61cb3089cb44dd62fd95bd997c69879c940. 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/NO44B2402040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec81f438e65451a3df10d4a620d92291b7154e7ae05f77c412d875476109c2. 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/QZNWS2254802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd185011651b09f6fac5fad4b788f031e138c47866c68de3f7730c2e22d73dfab. 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/QZNWS2254800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b512b3384ee2ac1602074ae3d73790b8bf652924eee2b28acd6c2779406734b. 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/QZNWS2254806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaea3425dc4f952314718568e6a7c8bf9911dd20327417d51fff044e5325bc16. 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/QZNWS2254805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0dc3096fff4450c79f04341048ec672872430069b11d224929dfcb9874d9f1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NO44B2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902aac7affad11c0c01a1eae8b9a2e6873a93802ce197aa5993b6cf99ac6208c. 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/QZNWS2254804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0dc3096fff4450c79f04341048ec672872430069b11d224929dfcb9874d9f1. 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/NO44B2401010.
Sunniva (Bit av deg) [feat. Lars Bond & Moe3]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232be8a5e570d6b038c84f6a6537a75aaa64c11cf73eadc4cc84a393271c08a. 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/NO44B2301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb468a080dd71320dec01aba0cf01da7eae908bf216158170cf4ca13d063c217e. 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/NO44B2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d1cb6521b5c8c8af2bb050427bd967fb43d5b195359e9f540ff37ad986191. 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/NO44B2301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892df95c11bf6e0d3be75a1b672083d63f39c7a4990cb51aeb8352f589d336c6. 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/NO44B2301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232be8a5e570d6b038c84f6a6537a75aaa64c11cf73eadc4cc84a393271c08a. 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/NO44B2301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae01edfa04dba0f5a8007ac0aa344846cb03be25267e486291f71227f0685b5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NO44B2301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef14343069cec0e017dbad12554ba68777cfa07b764b0bcd4fa429af01dc06b. 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/NO44B2301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157eb939baf4283dd0772b981ca30d5caf01c38540ee554953b5f7ba78d74da8. 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/QZNWS2254801.
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 0xaf481839dbd9ca731385f7ed07526e33948ff55fdc1f2c35eabd2ced194c80da. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCAGA2275365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f84b15dc0628be62f57b0e8776908556d6951b016c2a512adc5e8be82ef8b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/NO44B2301070.