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 0x57f68c1420758768f760138da3318f31286753d06e738aa56245b481642761e3. 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/ab26c281-d0d1-4a83-8efb-7d697954769b.json and https://artists.proofprofile.net/proofs/artist/ab26c281-d0d1-4a83-8efb-7d697954769b.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 0x229e41030ff9e21f3bbf18a6b11a04dbbcc15b2036174423f13810fb093659d1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLRD52253469.
Dos Cervezas Mas / Amiga Traicionera / Pagaras - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7826f91b804ea9ad9806bb384c7e03a80e4f1e925787f62f17a5c754c4c0f48e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/NLRD52253472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c40cc56cf7709d2bfb8d28c747b8f0b03e2e9bd414d6771944ce817768305e8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/NLRD52253474.
Ya No Vuelvas / Te Acuerdas de Mi - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d1e4985bf1f3f8a0b23fc706b4ec3f6945032485468339744a353284ae3d96. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLRD52253500.
Hasta Olvidar / Amarte Hasta La Muerte - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17144f1b1e664785b349f7a3fb1ead1cc9a7dd40f2bcc22e27971256da5550e7. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/NLRD52259876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf705299158ba17a17596339088a29f7cf4ff6656cf66964a13d68ca9a300031d. 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/NLRD52259877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9081484fda0f7dfebd70b454b7907243516f48f6fcaeefb173c9ca002b46f49e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/PEVP22300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804a47b2fe22bf038b79d59fcdb7bccf812d91b5fadcab90ca7db650833cb491. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZYFZ2315920.
Pienso en Ti / Quieres Verme Llorar (Live Session)
Pienso en Ti / Quieres Verme Llorar - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a9d24ba47eab034cb7cb9c581b2f8d389140b83349e606183bec6897df7a7. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZGLS2461108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0a490d9c908a9594b087174d088b9d3ec72652d11da176a53cfe0bcc5e574d. 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/PEVP22300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7acacc465e878180d382615d5d1ab70f718ff54687690db0dbe60fd97bf2d1. 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/QZN882408623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546bd21961c48763ef2831d88d34ca54d30c37ed971aa836d011a2b9ff0cd3c9. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZN882522384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8a343d7b3653b45416ddcee7e1a3d4b5a8749ced86f5e7f0ae48ba8c4204b3. 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/QZN882522379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa64efe3d379824d9c7a16a04540136ec76d980079729da29809e9effc40e51. 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/QZN882530559.