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 0x725cfa0dda90218e0bb18a2da50f74c6af718a6446f473aff2ef334dcd4ff6e9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e00d9454-a921-4546-9a5a-4b94cda39c7b.json and https://artists.proofprofile.net/proofs/artist/e00d9454-a921-4546-9a5a-4b94cda39c7b.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 0x6fa0526358100cd8322f3b46128a8c19adc0f81672e5d068e488797aa7c2e467. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/NOGVY1305010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd8e3bfd920425624bb4d573807235bcd0d33b486bb171b0bce07b6d8e8aa38. 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/NOGVY1305020.
Det Vil Blåse En Vind - Ekte Særpehjerter Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5a4ecb343c87d5a576de8805fb2448bd8180c072d7a3c67cc5327761a9009c. 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/NOGVY1305030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4317122ebb51210bed712ae4b7748ae5f03c6dbe6fe54e183f4a0f4a674a979c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NOEHF1102020.
Her Kommer Sarpsborg (Vi Gir De Andre Deng!!!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7cad40aff6975e3412b53a75c9f0660173e0570d00ac3e7514eb391f8f3f88. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NOEHF1102040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c63528cf8e2a5b65e2c7c9a389da30350d9c533702f9230c1868a774bd5c19c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NOEHF1102050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc2782d52fdc604c5a01a9d719d37f13d9066be03681f4bcc4e0700eb1e20b. 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/NOEHF1102070.
Her Kommer Sarpsborg (Vi Gir De Andre Deng!!!) - Karaokeversjon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752d775336e2e1fbd1372257a32269f5755fea68cd309f00edb0c32a7902998a. 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/NOEHF1102130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cac8826f3f97f4c1604afdae9642b29c394d71ce0e65fe11e08dddbdcc7fc9. 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/USDY42338889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c0838bd2a45cd9cdfaf6d743554c332ee0143ba161df634925ce948035a4b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOGVY1407010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2970495ac0647b86e69745f2b7c3c9420b46e1e52bffffd6d6951c5fbab95dec. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/NOGVY1406010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b7098046aa74045f50bf853dd429c6d31079b58f9c6d2d0b0e4830178972b5. 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/NOGVY1406020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7318f45f6b8af41872cf3e540ff430e06253e4dc68e489d80266093a6dce3daf. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/NOGVY1406030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc119d90d47a3dc38eff2a1d9c1c83a2e7472ab702ef1494c1b13230caf28c6ad. 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/NOEHF1205020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58e4ea4ac266f5fe7d138d97e6ac45247b66fdaab992cfe62fd5a16dc2d2569. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NOEHF1205040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b49ca96db22826cc7a8bd0c2628154114d47973e3cc118c530c7190d2c0d6f4. 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/NOEHF1101020.