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 0xb2d97f291b59f6f2f1adc834ea80daf8ae33029f6cb470b8cb44f282d6b5597f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2e71743-2964-4723-b475-0ef5201e56bf.json and https://artists.proofprofile.net/proofs/artist/b2e71743-2964-4723-b475-0ef5201e56bf.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 0x1976f7c77d9ca9deafb64e9e6182a70eb2f3b0bafced6c23e774c297bcf3cbab. 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/GX8KD2437426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf347f0e7e05fd0e3e3969ae3ac69de5abdd97a36dfe24da75d634d386e00b5. 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/GX8KD2425240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b224f337b6de5b7c08c50383335f7e19e6d3474dc12f276fedbff7a91533790. 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/GX8KD2429013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a228f5129de3dc4e5a97c68bbf5b42a562e58098834ad1d20005d8eff6f502. 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/GX8KD2420242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d469c4513c5a9eeec542be5e611edb0b8d6c11b08d4592c512dcadb5616258b. 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/GX8KD2495177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408786e42eaf0006edb314f1f4e30d75b7bf37b02379e6e345b26689c724faf1. 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/GX8KD2485902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5c5a8d604d759e5d5533e6ac13eaa4d197d9a7c53e46d0585c35cfaec107d7. 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/GX8KD2465778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f3980e562b0a541a212c7480fe981ec556db24f2ddc5dcd3911df7598fab4e. 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/GX8KD2407802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb066bfc9248a883630c7c845f10a95ee182638380b1910c4f453e8ba71f04407. 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/GX8KD2484626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec40ea1ec8eed1cf94e2e1a1a176369c65660c8dd2be84e4057bb89ce7d4abc. 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/GX8KD2420463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090b8968ac85f640614dde2a63e2281940ec37e7acd7053397c90f3fd70c5669. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GX8KD2431717.
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 0x3964d76f588239b9478ac7415572e1a1ab6e9aa9afd3da5c59591a88356f2f4f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GX8KD2482917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab572990c86d58e366737eb4166777571bcfa02e13a04e16055e75624e6212dc. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GX8KD2441867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1042d47cd4be128e789857ed3d4695fa4cb54347b9e5b2c43fafb02df090bf3. 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/GX5MY2212024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863bde41ffb617bbb804bf048edf5a8c6ea3dd3b246bd754803ca3bf5c76957b. 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/GX5MY2212029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9820c868e52e490211e54d442315682902bbcbda6f63c542afb36dfddfa354f7. 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/GX5MY2212033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe175cedd3e263365dcb5abb7c22885f39c2a302b823469eedbfa7d5de406517a. 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/GX5MY2211344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b2542299f241a5620874d409253dceac3c4e465e8f261e29ffe4521823f600. 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/GX5MY2211482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88395d109e6ec892ccfcf88f8d01706c94b584629d6e8af7c0edb4375ead2b85. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX5MY2212019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a640b355eb7c92630ce08533be8d53c7d046f26adb098185b15a7004e2ca30. 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/GX5MY2216050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10168b26f4da34e79c1bfaa055fd7f7e27f9f22fcc11fc77a296bff0f75ed79. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX5MY2216052.
El Aroma del Café (with Floylán Gómez Santiago)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cd6690a7d58efc2a572341cc69ab1d758721fdb2d7c334413f05b74bc55c19. 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/GX5MY2216053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e3b13455945c869b0586262e83b16e03e2c139cd0cef12da2824c949c65b6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GX5MY2216086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f63f05c580e05460f9ea5ddc6431ed89390ca12eaabb79a1ec8ac1f0f55acb. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GX5MY2216087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dc7442d31de56c5a737ea8cf46e120dc8a07366c0ce0ccc947328f30f7baa9. 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/GX8LD2348309.