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 0xbc16405b7ff298137bff91536e47769d043f96f395ebc69078ff98e1f2ca977a. 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/cd878dc0-fa25-47e3-8cd2-acb4ce3a627f.json and https://artists.proofprofile.net/proofs/artist/cd878dc0-fa25-47e3-8cd2-acb4ce3a627f.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 0x5a3390b1297ab75962a983e7d6fe834b7321b0a63ad458efaa08ed6306d4de0d. 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/DKADG2001053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f2fa5d507c81d05c87aac1a3990d29161c32f3fd2929de678c2268674e5368. 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/QZFYZ2371111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceacc7df971616708633c43cfbaeeb6486d81b5161ef39058f9c8f6fedb5d6a. 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/DKADG2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ce854b2201c865314c92f041136cdec80ce87836ddf32986330211b1a07626. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DKADG2000946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74b5e897112d3b337d718f37371b72c8b9845f4da4584a15361629c0a63193e. 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/DKADG2000553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81eac9b054465fedd866983463e603f5395d9c1bdd08632b9c004469472927a. 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/DKADG2000413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d131f60aa10274ad034f1d9fa2bfb45dbc6b6ad354b1be0670d0bd1fe5551e. 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/DKADG2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6918851b85f04b939b848c21664c76111fd2c868c2992082d2857996ea60b517. 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/QM6MZ2176625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94c13deac6c8ff087c285269d651951a241f28dd69ca655e685d344f1372068. 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/DKADG2200338.
Hvis Din Røv Var En Sang Var Det En Banger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399aad85ada00de99120197a6885c693c3bf40c17fd748f4645584a8c61d960c. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DKADG2100389.
Nytår Igen (feat. Jesu Brødre, Lina Rafn, Niels Olsen, Klam Vandmand & Shambs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2c45ca7e96845bbc54aeb5d69ce41a7e25c573dfcbaf42986083784bf1da98. 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/DKADG2001051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20579a85f824c2aa33328a057734917a41b8719164df7d92a637b20a3ad851de. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QM6P42154033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec32ed89803f84fda435260bb83ec208407506866f95750a88b39e2bcbb5375b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM6P42153867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed8bf8944fad30036fa62a04742211d29748b4034e7a4fd5c25ccfd52a92423. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QM6P42153883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6918851b85f04b939b848c21664c76111fd2c868c2992082d2857996ea60b517. 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/QM6MZ2176625.