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 0xf949b40db14a8a3264d3f0498069abe1eee12ff31396255693f23834be490390. 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/6095ade3-dffc-4780-99c2-57365acf867e.json and https://artists.proofprofile.net/proofs/artist/6095ade3-dffc-4780-99c2-57365acf867e.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 0xa05465f57a5854668dcac965c3712290a5090c378250aa51867743e347c078ff. 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/COA6W1801293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e029c5591708b70d16a65f063572f14602ec80af7a94f597b7eafa99a84c3. 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/COA6W1801297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6c341b6fee358a803541bbefecc03ab43b8f403c25d997395ddfa98689d26a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/COA6W1801233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d42282fd3f4890fba0be48f219521ada54212cadbc0f25336f18db0614e096. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/COA6W1801234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e8e66249440e8a64f01939b52222584f7e5d79b176e2b149a1faf8e4f3be7f. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/COA6W1801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c49df777f251ea8bce0e485f56a46425eee4d5f0b4caccc37ffb2d55d5a495. 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/COA6W1801304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed59b0e56361fdec8b9c854ada9bb20e1292d9bfddb40e7a8f2d86cb23385009. 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/COA6W1801305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8719488a47f6632e36bfa39561eaa6d92cb9a1881fb9a59e3f05e895f793db. 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/COA6W1801307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7823c8a67f15ed94535c5acb17876ba69b34623d9aadc4609f3f0a6ea5529f. 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/COA6W1801308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13df5bd42a279c989d7bc64dadb59eb81a2da74a2d76da63a4f71306eaaa7623. 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/COA6W1801310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123cd751b091b26ba9f6ec9994b2455bf25deae9460df6410930e7936990f9f8. 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/COA6W1801314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaa75d4b4a3d6a970b7b8839e5457c737935f60d2ac2153bee392229a265c44. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/COA6W1801303.
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 0x1210b9bf95c4e9bfdf6563e62e89dc3f4af916eedee383d7a8cfbbbdc2853451. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/COA6W1801306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b99ace1b6acc016e8996352e629842673deaf532fd52df87c20935d9ec32e3a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/COA6W1801311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d61a24e8044731162b88cb37936245e88fb51d1ceec79ecfcf2c318bb434a5b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/COA6W1801312.
Inkilinos Del Sur Inspirados Por Lo Real
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1631a2c44ece79058ba56e8f4f8f651ad7c9f591eaa5e2dbe2361c63f1b3f3. 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/COA6W1801313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26d1df4ac20efa6bd0863a63da8533022bdd3a04d0d9ba4f014abf667d8cfb6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/COA6W1801316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1978e0a1af8bc11755a910f4ed2d67e1309d9e739e5d5b4d38e737f34e4ff9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/COA6W1801317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a29001c75ef243bb6f3eb3a7006e206dce965175306a1c0e938735ed2a56f0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COA6W1801244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90936ba02675764720e4152032bfe173c692fb2600add3156549934c7c08dadb. 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/COA6W1801250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1892f3f29b7ec22d6c12b53e3036e4688447d19ec12e0e3e4dce977a26da927b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/COA6W2001026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544ad8760e026416c5f32edb8b8a006b19c8d967f1fbb041b1c6501bac7aacb6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/COA6W2001247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3714ace0768e036f67cb632b02ddec45404273a9021f44393daa2add3d375f21. 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/QZYFZ2409058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb758a68609d811d9708e21afe7ba157cbc94f4963dbc233d5ca70f17fce46cb. 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/QZK6M2348078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5c279f902deb6efec5926c8c5adcf9ffdddd73e12838079badf8d511da998d. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USHM22221633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1f1a70f7ca776b99ce3fad035c30c3dfc02d62654f49bebf1775d0aa0a6253. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FRS182131955.