YL may refer to: YL (rapper), Hispanic American rapper from Chicago YL (rapper), French rapper of Algerian origin YL Male Voice Choir, a Finnish choir, formerly Helsinki University Chorus Yamal A
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 0xba41130c77d3facbda54e11c6e6acdd7b176558330595d9d00590e01c4bc57cd. 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/a21d1c14-2acb-4f0d-9130-0b07edf7f6ca.json and https://artists.proofprofile.net/proofs/artist/a21d1c14-2acb-4f0d-9130-0b07edf7f6ca.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 0xc4211a89dfc8f41f6d65c9df03105067b7631d0e57791d73ac1aba2401ed4e27. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZARB1882188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c02be9e7f5aeba51ea5c6a682dc361fde5759ae3cbd4d651a4a2bce5b1806af. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/US92U1901414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b55ff352feff59631583a1c2ba82815266ebb788848e1b174c137e3a488e39. 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/US92U1901415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f3022b6c96afb978077190867733f04a60f911adf252154e4d75b5dbbc4e0e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US92U1901417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243ca51873d91ead8d0b7535b27bf6c79a365974d241f47a6668e5fd28e9aaf1. 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/QZK6F2232324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb72f56cd6dd468c151a21122647c0250d02fc4509273ffbc6119b788a2cea0d. 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/QZK6F2232325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389599403e5d50bc40ae1efb0af4dccfda2f916c5537502a0df0f92f1612ce23. 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/QZK6F2232326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208a226bbe403a922ebebe0f412fada8a4f97cbfae9378bf2d1b55fdaa0d394f. 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/QZK6F2232327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9e9ca5f9ca04d7642146f8aea29af7628d479c9b20dffc6bdcc8bbcd270da. 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/QZK6F2232328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179199a52fb1abd8c0e327b3f4272fcebcf7850b47a9b35eed794d68bed8c6c9. 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/QZK6F2232329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3bcfff98018f01ff3488710cbe52918b7086f199e87f2d9fa8b9dab9a8d413. 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/QZK6F2232330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc912262a0a914c50f78c64abfe9f26f14aaa872fe593e04387b0f0b4fd625bc6. 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/QZK6F2232331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0cbb65e2598101fe9a770ad37163f7127a9e1a375d048f6dbe338b2694ce8f. 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/QZK6F2232332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342634718758e400bb7c9b7b4d149a838e50b9608802ca24744e070dc783e1e1. 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/QZK6F2232333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e99e3af77415adff40fdbe4a4f46469a13844f6e4e2dc10ce11ca6738b2ba9. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZDA42408262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83be63430e08238ea7ef9edc698c4c9253a6a0a71990fcf6de46bd47732a76f2. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZZ7M2438264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423a3360b87492a1c806aaa46921bdf24922d0e72bb942c4ed2752b3d1da508b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZZ7M2438267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68059be8e615c5b8d785e38fcab5e2a027fce12c6fafcf2fae0295eb0c24f0b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:39:33Z), 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/QZZ7M2438270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf323d16b10df1b294e069a7298dad7b92e32a0976a56ba6405597ce8cf5d8b7. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:58:13Z), 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/QZZ7M2438271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8c363da320f1faa806cfb2fce99db6ff52878c5e905f704564091b1fe28db7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB32542370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0596e4e0db62ab0ae204323e3df1b84764d2bc7653c3973c3416ea4b4f6cbc57. 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/QZTB32542371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262cb196bf7be7e220b3804f4c7a6ed2c668b3bd05c9f8578a99ab1d25bd06c5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTB32542372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfb08ee2ce4b26f12f3c17f96c429837f05e1e3faae9d5fafe279e48e21a07b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZTB32542373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3de982742d86db0673118ceac9af149b07b01f0e889f37c84397d8435be0926. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:39:37Z), 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/QZTB32542374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0685fcf941dc9efee65651b0cafaaa060e7500cd0c002741242498cc5fa5943d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:51Z), 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/QZTB32542375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cad67dd03880c87a6cbc855b383b1c10263bd90b5f1a85e92237a51e9a80312. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:42Z), 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/QZTB32542376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f64403389c67d824fca74cff74777636c0c081d63317423b8f2af03c84813a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTB32542377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0223e106fb67cf805af0a94244686b82d5b5c29616ca80122057f8544fc1c36e. 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/QZTB32542378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87637915487c12aed5c0fbc3d6f25e6970116ffb249f9db620e0cb09bb0c466c. 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/QZTB32542379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5e51f14d5d30dba1e1faf1db19160d2a9486692c77cce0a02655c973167ad0. 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/QZTB32542380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fc0987c37d5056c7db049b80c7af0b48a6e089d6d8e1b9bd5bf72348644882. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTB32542381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da7e9840d25e612cb7b560f97e51bb044583441dd6d9ea651ab07b4323fad58. 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/QZTB32542382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f5d3f9106d1b39d57c006a7673c79d45afedab39a2763474aa0dddc336de2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTB32542383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c91c6ea49d3d29d3eb5a2ea9b565e329f40c721762fa39db28bb850854cc608. 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/QZTB32542384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd0becc28bbdebc397b89ccbe3bd5d41f1517374d01ce594e1dd809f7e53cb7. 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/QZTB32542385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a196fdb09f55e8de2b3ffe44829121d32915964708397ab52057fd4fa19f4a9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFP2580971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789e41fa355a8504394bb4f9a23bbe9ba186e69bea871920e3aed06ba5eb2ae. 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/QZFYX2016337.