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 0x42454ddb58aa15116258383b562f8a6cdf8318b4bf40eb69492580a6764f3ebc. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec42ebe1-f11b-4b9e-af16-c7d162576096.json and https://artists.proofprofile.net/proofs/artist/ec42ebe1-f11b-4b9e-af16-c7d162576096.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 0xb2aa39938ec7b7787fa02a40d2054ae13f86eb0f5bd188eeec4d947fc9cce16d. 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/GX3Q92430476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8dd25017b960798e359a2ed1bb863c338b90a3bace331bae6addc52d28e157. 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/GX3Q92430477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b84c3ba5d375add906ca07f9053bd1c0223ce9e30cec5f659a3bffac0927945. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GX3Q92430473.
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 0xcb7536d6e3a57379d53d34fc12817239b1b43997ebcfa306f2b14599c35ca6f3. 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/GX3Q92430474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c17a3ef139fe20ba16ea4ba20b6a9d351019d9e8c8177bee97a7adad19011. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GX3Q92430475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91932a081325a98a8b237df6128b7e0fc748867c51656a90cc5cb97467b669a0. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GX3Q92430478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01077236a23a6c217300177256175b7b9d086d803836de36ddf28899beaa5e30. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22439283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400800817e0e4062bccc30a909db968a86205ecaf459e288dcf61077c79b4cea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMA22439288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042c97c40add425afa65f4f3398726d088d01932d4499f48f489b06cf4d582b. 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/GBMA22368396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41711818f70a728f920ec9892385a9bb09756ce7e7c88d384866c8377870aac7. 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/ZA56E2420567.
Oncamnce (feat. Shxmlo, Goldmax, Worst Behaviour & Still That Combo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded5774481b6bef3b3bd2c5e99b2ad40389a4ec21ae8b37141d892a3b76c64bb. 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/ZA56E2420568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe8d70531b1abed5c8217ecc28311f6d4241b1f01eac763cf55e2691c2d2dc5. 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/ZA56E2420569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4a85326d77caff48a4cc7db81096f0d82224625944a4b5c7408721a727082c. 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/ZA56E2420570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0494cfbd177d25b4510f09e21f22892a4da66682bf158efe33d01082109d646. 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/ZA56E2420571.
Freestyle (feat. Babes Wodumo & The Elevatorz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf2074f20e845c25fd3d705dded3230551eb8a02a1d6792237f4bf6b288466d. 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/ZA56E2420573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3454d1e654e7d61a834d3092607dc7453073e465338cc9170882f502e7ce44e9. 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/ZA56E2420574.
Ekseni Ngo9 (feat. TNS, Bhuwah G & Shxmlo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfe76d9c8a50f115620f19c1a310d610799124dc5c6c97254d2662e29d6d07b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZA56E2420575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c8fbb49a53212c4578ad921424a092fcf897c6ebbd63c267d345c5ccdf0c8d. 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/ZA56E2420576.
Pakishan Asambeni (feat. DJ Tira, Beast RSA & Pex)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21961def864a842b76675c8ba6645ee21e3433c8311f4e8c3aa2dace8c00a46. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/ZA56E2420572.