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 0x5df199ac197346aa4bc6e4edca357e4f848da649a8578d678a778ccea7ed9d56. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1ec9639-b7cf-486a-be30-1172d6201515.json and https://artists.proofprofile.net/proofs/artist/d1ec9639-b7cf-486a-be30-1172d6201515.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gå Low For En Spiller (Hubba Bubba Klubb)
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 0x763ab2466960b2acecbaef2d7ec0a133b5a3f0e658694ff4ef10fda995f49c14. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:22Z), 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/QZMEQ2188356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7278c6feb00f898310ee074c29d853a42897f2fb7974ce69e1ad00768af6cbb. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZNWV2198870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97236baf4ab7046ccc73875ee52a867aa7d2e75ebf386914f4cba1fdf391312. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:08:13Z), 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/QZNWW2193763.
Chicksa Er Fantastisk (Kiss My Bæss 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0331f5f507d68b90cbc82df1bdf08dacb31e84be9ae970fc49be38d030e96fec. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHN62218400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461bd21e3e5e32c85b0cf9cdcdb5e6bdfcc46770b37152020f52308e16b6a6dd. 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/QZHN72248210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4d32126943c38f2739fe972602c765bd1f9c61b484758747875c44ed957db4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHN92209765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdc85def15b7d844806898da37ab86ee25d42e0579cea4c9a9bdc993633614e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NOX8G2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c73fc923dc8de83e5c6719e776c8ed049580fdac64542f419878b7857c845. 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/NOX8G2301750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08140d889555e123793da40f56cff08354978c226fcce4d38b6f8e28be506de. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/NOX8G2500367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebbfda4ffa1a037aa88a43d1675449c29e603384b0274e225198a7e2818b978. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NOX8G2500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6e71aac6213d5e9d70fb6ce8eba8d17e17d6aa40262f895da197e1b91b97bd. 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/QZPLR2148537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f21ed3628dad47fcab7552b0d6edec4eba5f45e3adc5c3b7ddb97e8d37dedf. 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/TCAGP2285379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62890152180b2c85fb342f26138c1c4586a534e8a1d43ec5ebbc8c4d2aa01516. 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/NOX8G2301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29412c4eb07424d87d5090f3259d5aa0c1ecc1bb99b8fe2ced651ffe08a9ec74. 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/NOCKK2243030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde058ac91833c8aefbca7360fee19366a845351fec758b50367d412eb626a8f. 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/NOCKK2250020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ae3d4f0f763dc4bb7e12034d7d0f68894ed83f8156a191c65110312abc7f25. 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/NOX8G2400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08da9e2fd9393a73c692bba056f8775c52cf43ccf77448e3b4327a61e81640bb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZTB32269726.
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