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 0x3a9664101e7b75e600778a452d95e7c7a2ee20941c8dff71a44a4f04d6fb32e1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73245404-b83e-4f79-a741-37eea2ef7b8b.json and https://artists.proofprofile.net/proofs/artist/73245404-b83e-4f79-a741-37eea2ef7b8b.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 0x7c49cce3c7e40cf469c3de1602ad6430cdc670dc0702631f104f529aaa25c046. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ZAID91900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205e77ef080843f0193b8d54440144dc8798de789447e83da38b9c1a3e777158. 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/QZK6P1917931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d209f63960e370c32c745e95fe26208070f8719ca0825393f740cf6c6ea62d. 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/QZK6P1917934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ff3de1d60476da70fccc31bed64007cea91b20e1d29bbba7f48ca2587998a. 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/QZK6P1917935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda26918f1c918a549885599fb9627d292fe43cc547896c0726c6a4664104b208. 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/QZK6P1917936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1039716bc722d8693bca851d308d7e3f9695e1b9a4dd4f8257e9d5fe08a75b60. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZK6P1917937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b23e9b74c17c8550aa249a2fd8e4f2045b13c8f221669becd4e81ae22ea9c2. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZK6P1917930.
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 0x4f6761cce4ebf34e745a5b8eb86352df43f992da26a459966896131062954599. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZK6P1917932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd789fce450a4ae1d8be13d6164a4eb13e42a883508be46a297280695e6bb0f8d. 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/QZK6P1917933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958874ef7efe1db58af9a74226b791d99640e89267bec4bdf0ca9e42bfb616d3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ZA56E2306301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabdc02c0da6ef6ae54438f08bda490c4c2187f4e11a85051575ef392aa58418. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:50:12Z), 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/ZA56E2306305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102344cb1d8b1769d2db533ef7a271595facb7dffade28cc601e46da50c8e59. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ZA56E2306310.
Obatla Something (feat. Stino Le Thwenny)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f750de65f10d0fc5fc9a5f7c1e8a299720b966b3f5057004aa8bf6fc854d1f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZA56E2306315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7804733fe8116fd318c3c75981f4e0c852b41edf0a353688d7cf7b5c938ca44. 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/ZA8MJ2205001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7746a3dc2351772dc8044820f5026e2a74e86120080e7307dcf0adf75597a311. 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/ZAE3A2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f07b8a28a3af7306a3d265cd2551a5078b9a0896b0bb51947b6a19a3ab42b8. 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/ZA4212100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd726edb231ac05f943b2709d0d50d30e6612812245459525bd9025b8921d30b6. 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/ZA0I42300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdade9f202025a6e83fa0d711761362190fc928c4c79cf37841018a1c77e37972. 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/ZAID91800008.
Mtan 'Omuntu (feat. Shwi Nomtekhala & Makwa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dfd3c2228f9c2332dd2cce72a13680955c9eb7d2519ddf83f8fbbe663378f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAID91700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd726edb231ac05f943b2709d0d50d30e6612812245459525bd9025b8921d30b6. 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/ZA0I42300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502cb1c8868e33a1c74cb2f6e065da586b2fe3a5d57d689b39a9101834bb918e. 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/ZAC9T1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f5f9f5e0f1e1b8055e857ceade4e32e6e77032d613f8bc33b225dff2a26d8c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZES92069115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897417eb3ab1b48ea9e58d157ec2afc9d38197ccc53f41e61d18cb669f763a2d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZES92069117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92b4844f9c7e5c6c8463d784a62db9b0f80739dd2fd91c49c6f0ebcfeda5f9e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ZAC012201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9d2f80b370dd10fded7bc46242318698f988d6a0b4658ef0717929273e4b2. 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/QZK6N2271395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a1e6c8b87801260ecac626ad8cac227c18e3b26b3a30d520b0e1d06bd41de4. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ZA0I42000011.
Mali (MFR Souls Remix) (feat. Max Ellipsis, Aymos & Aubrey Qwana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c2fcce8c4404242f9182fff4dcd00fcc379f4583623e20ddef45b01085a48. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ZA0I42000016.
Top Sgelegeqe (feat. DJ T-Man SA & Makwa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46589068f8c5caff7b5d08877911b3b77a70019214dfa9ab114b06b21be1e7c. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/ZA0I42000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3b549043a767be14117e29e4dab3922cac82841a419153b2f6bad0b788bc72. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ZA0I42300003.