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 0xd0b8d588bf5b1578405fcd84bfc3d7559de64ca5162c3387d0c204417419cc31. 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/4c08bdb7-bbef-45cb-9944-de41d7ea25ce.json and https://artists.proofprofile.net/proofs/artist/4c08bdb7-bbef-45cb-9944-de41d7ea25ce.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 0xde4ee28f57fb373409f622eed2c430595d465cf51e3b4ec6930b3699848c6716. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOAPI1587400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c86ec252b4a7bc8b633d3cd17cd5a577983d4843f1fda8c930c1109c20e9c35. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/NOAPI1587402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923e49af7e9637d44658949bf05ec731c71653eac48e412b7670edb415c57eae. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/NOAPI1587405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315461891d34b799b5ac57bf11df9ff24380edefe8d3606e3346690a22911143. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/NOAPI1587406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ada4c05209748a0f188e6e954bac505a41ced6c0a004e93d54eb759b9315883. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NOAPI1587407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bef6c36356b294eee3189648362a4476985e2d4043ee45cf2eb1627c9ee4d4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NOAPI1587408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f42af0d62b20beed87050b429ec73f00405689dcf8c2f2664e913af79e6ac39. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NOAPI1587412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18af54fee84c159a0a35c35bc45eacd967d92fe050b8dd01cb1ef213abb93c5d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RSA281503065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4b73ae3dd5f1c4be6f11dc175fc6462eced091f36c744ddb3668d45bdd631. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RSA281503066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a489fbb566c3f08573bfd281dbcbbc3c8728eb71fee90f9a4b4ba9f17a90da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RSA281503068.
Demo of the dead (Demo of the Dead (EP 2009))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb691c59fc0818dd564f0b11a2b5ec679f0844d7b50ff8642b726e48d5a4ea9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RSA281503090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a4f54f529ed49a63d9841047faff0253fc33d0c9c90bc28360d96762ff36ab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RSA281503085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508fc5d406a1dc91200a31bdb3cf31b0bed0bbe00b4fd2fff8bb427dfa801631. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RSA281503092.
Pored tebe mrtve (feat Danilo Trbojević)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553a1d63da9d5c28ece0c454e4c843945c6c23276205d5b25a49cf23ce178b3d. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/RSA281503099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0862297abb027b5075db6251629868dffb329a25010f6ff4db79e6a10be644. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RSA281503101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d967e59500466404442972ac0ea61192dc85b1f60e0f1c9456554b197c08d0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/RSA281503103.