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 0xe8030f9ba2e843bbd1592a979f31d79ae32798cfac28875de6ef957148f610de. 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/28266182-321d-46ac-ad2d-66595096c764.json and https://artists.proofprofile.net/proofs/artist/28266182-321d-46ac-ad2d-66595096c764.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 0x82c0af4966600c7eecc1448dd585ea6dcd2c1d3e882780ab9b928d9a33f442f2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCACH1509296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b07937990a64a7243783f7f98be178f376fd618ccb6ca38d01f1d4b1f2e854. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:50Z), 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/TCACU1646842.
Perfecto Sacrificio (feat. La Casa Del Alfarero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f680a3bd57fdcf3cb555741c9a86217a77102b4edbbe3ac6d8b2390ce28d2a. 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/TCACU1646844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3979f96701707374b319d79ecf76cf53d5911f0ccd83b3f552ce132940dda6. 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/TCACU1646847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc064730ba7484e11b7e9ec0dc6d18339978b600b174b449ad5a15a0b396f73e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:29Z), 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/TCADK1725738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a976d46ba9c2b7e54972f0e39823ed2ffb814767a58cae43de41da2e8de72. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:17Z), 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/TCADK1725741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c3ba433f51180000852c7549b914446d6ca4fb48be8367c43c8d4548d2deac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCADT1821586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8376c36b9d8e890bb9f3f08e869a40074fab68d26825046390796b81ccdb3d48. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCADT1848449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc516c0e9a15d9061847214bb8d4d6f2c27252d299252db2556c46a3e14cecc84. 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/TCAEJ1991813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be557fed02743c8d3e185f3d39ad0bff0cef7b00c001e34b7b22b954686d8f5. 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/TCAEJ1991858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb537de48dd5348d168aa1ebc68a89fc3e6026065836ae7d1f1f2afa3737db5b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAEJ1991944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa7d3e5614709507272034e359a45e2df4c93c64767b4953a68ee253b6a31c5. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/TCAEJ1991981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3645217ea28b1132c8ede7e16d1c8ec0f856e834ce8ce3f4dd5424575b945a. 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/TCAEJ1991984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c66dd5319fa7173ac51be953a57d53448c64424e7abd147146ac36c7eb4b0cb. 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/TCAEJ1991997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec90a8151bf2355d5535c18c65d0dbd1356e834c51c49d96c11ef3ca776fc6d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCAEJ1991925.
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 0xb949300578537bd0127b7fc0b62bf2e8ddadcdd5f1be9d497318f2505469191a. 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/TCAEJ1991939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4726d6db6253941ddcf60596ee947841d5a7b783363fd0e3d7d5f6a340a0c9d. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/TCAEJ1991996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5f7f9d79b2ee94d8dd70ad02f5640317e54ec394cfb684d14b33c9d58dc6b7. 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/TCAEJ1992000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2010a417c3afcef7bfbc5aa67940c71a284b79d1548a43dfd4f60fc52f527f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT65X2501518.