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 0x171431f5fb50cccd253e67ee392a3f20cd6d1de7989409229b8f95056ba5d486. 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/acb18cd2-43e2-49aa-85cd-b04caec8974c.json and https://artists.proofprofile.net/proofs/artist/acb18cd2-43e2-49aa-85cd-b04caec8974c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A / S / L (feat. Tashka & Blair De Milo)
A / S / L (Fresh Hex Remix) [feat. Tashka & Blair De Milo]
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 0x973fb5f03811a4ab52b082ac727ddc80e96bf19db063bbea59632d86404fcd5f. 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/AUNV01900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12ac7ae06590329e083c2b4d99b60a2fd2d50d04d77f393d3ba73cc413c81ea. 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/AUNV01900166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2f6ff41709c95f4499cc7d60b1ff468a397225184b4133eb26225a7129fe54. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUNV02100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9ee7dab23ef94cee70a15c8a93d07a0bb8ef2db0ceaf2098e2071fd824842f. 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/AUNV02200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0486c6d1ac3e9c1ea71063f1b9b58c2fc75ca7b02dd1da7e8e1e0d4336f0977. 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/AUNV02200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c67f7c1f62d299380443060f418ba3c89247420909c442890deb6e44e5a593d. 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/AUNV02100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24dc5e149f01e12f7cbe1c57b75af70e30a08977ff6f53feb836e856201412c. 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/AUNV02100245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2f6ff41709c95f4499cc7d60b1ff468a397225184b4133eb26225a7129fe54. 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/AUNV02100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db1235a2fdd0a8b9542d8382e5a815f97f5aeaee5988510cdbabd455f08dcfa. 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/AUNV02100263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de41b70509614888657e725db190d41d5b34e1aaf629855e7e11f4dfde0d697. 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/AUNV02100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd7d24c8668c89317a07e3af601b3cfb36d401d6dca50ae886e108744fc3862. 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/AUNV02100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb48a22079c5f05d883a7a7deb73c3e2209c37e938d66dc89037652a63367d1c. 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/AUNV02100265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b2402710b85f65f916f6b60cdee21cf5ae95ba925f359e32862eb82de4c23e. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/AUXJM1900193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4e17f1d62a0cee3bca8ad590dd09d7b3a0cedc898b106d63718942cc41964a. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/AUXJM1900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4e17f1d62a0cee3bca8ad590dd09d7b3a0cedc898b106d63718942cc41964a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUXJM1900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7871a481c1c83d4914f195ac29e08fe809270395c75e888c3597b42f692f15d. 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/AUXJM1900198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa887292574ce6e7a92c386ca0870a1221280f9ed19d90b2ab4f3613dcad901. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/AUXJM1900196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db8f06b1ba2463f4f21e4d558040fd845f92ea6a8fb328963e82329323ef382. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/AUXJM1900199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0a2f67fb407589a0d28731ecaf6d5e9d89c244c24a3c55c7a4708c08ca11de. 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/AUXJM1900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9d3aa44e11c34e649bf3f7fa4c6daabb3229cf71b335673422fd16df6db14a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US4HB2500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad944609c051083cbc5a268ad4e49f42e8b4b06b92552e952f06305de8d2a12e. 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/QZDA81889163.