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 0xca878783e0940dbbe8958bb51586fd47c386b45017eecdcd65ef885fd40f81d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c97ec08-ebc2-46a6-b0a7-aafcbc78d62f.json and https://artists.proofprofile.net/proofs/artist/1c97ec08-ebc2-46a6-b0a7-aafcbc78d62f.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 0xf4921a1dfac5099d7d218b9e221e17159ef2562aad2636fe6be45e2f408bc940. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES92413689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a70f123dbb00c19ed61aecc556295e38617bbb94b7308c88c751ce5bebbc02. 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/QZES92413691.
Palmen aus Pappmaché - Kingpint Respawn Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016ac87a060fe2d4f1d43283c41c6d382154b55c4d95a789f60a6c22ca23b90f. 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/QZES92413692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1eade03a94bf3d915f10c37849fabaf8aa1d0e26878a05df4af7c6deb258ad. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZES92413683.
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 0x37b3ba6525dee23b57805073b271f64a73cb622927f6d4bb3e5893cf28a08feb. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZES92413684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d2d0d19423186a2ef7e5252672581114849592ceb42f5a8c1e76fc9dd78382. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZES92413685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299a7c6ba2c0e470ab53190d5413e3a3370639e862a4af5ce85bf9af569a60d8. 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/QZES92413686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf59a1f526da65d5f5244adf250507c94697430508326702d16a9be221103cd. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZES92413687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cac444cc56d29be2fa6953e36a95f80a85bfd184e9e386a8b122296dc5af65. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZES92413688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c77c6173265769c4e32280675cc187830a32d2b1efd7f68e67cc9ed2db7b5d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZES92413690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980f34d16c921402a2ff45c24a14ce109aa8c0a7867b886626b416f3ec48bc46. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZTAZ2454117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2739f99030a6ec5330a3e59447b36efe49cc171446b8aed182a1b19c3b0e5a7d. 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/QZTAZ2454119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b14ab0e22426108dd402d68d60fb3ba379961d1db3e4d1d2f5450f738b0c022. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:34Z), 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/QZTAZ2454122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6151a94973f15fae5ea1549d4730d67fdf45d30ca2ed5c8ddc1f304015f07d88. 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/QZTAZ2454123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f2fff1da1e91241438b49d257f28952e010cf0fda980fab08febf23a7f6a77. 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/QZTAZ2454125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa80771a905837eb38cc92cf83e34f76352c4b21fd7300e5338cef0deee10a4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZES62485215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee549f3338e2b383a2b1f8873e01eb71c3a5cd03fb516d7b45d3b6c2729dc874. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6F2451183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d256648af32ec9dc32ae4e265b1e62bffbebf702fd2e7441b945c4c09038e14. 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/QZK6F2451185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc9e6d98f14ca91ff7f9beb4b0c77425e444dc3a64a10818ad06cccc436114d. 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/QZK6F2451189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041dc330569d8aae8d3693ddf6727aecfcb45b9339ece1e57305b8f7513001f. 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/QZK6F2451191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfc70d066382c76870708d9f3e1138b4264a33be47fd1569d01986f056d140b. 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/QZK6F2451192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c513e6c81d026fbcd43a161ea7cd0fd4dc565c7291e6f35e2aa1b7dc0ee823. 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/QZK6F2451195.