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 0x1229074bce1be6ad96d58a5562fb6012d7363c5401bc966995125baf30c71194. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a26bfa83-4898-4820-89ee-39d6793ea1e3.json and https://artists.proofprofile.net/proofs/artist/a26bfa83-4898-4820-89ee-39d6793ea1e3.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 0xa20a1ea1289b24963d68dc9b4b2f7497fa92bdb60f6bf01be18332c8efe9d4f9. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/MYFR12095200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab61645ec30cf94d6ab6f4a224380b041c5701c50fa6a17a4d6e9bfe3740bb5. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/MYNS12041733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fb296f70b14ccf2c3790702eb145482d61188d906ea979b9c9fd6b8b89e172. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/MYNS12041738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42b73f79d54a52786fa901640ee1068110f8a70173341e07f851b6ab7bc9deb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/MYNS12041740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1f7c68d2700cebdf2006fc6e589dcab7b24b2ec3c94e1a8d5413ef153056f0. 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/HKE022213940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd778fbdeef5224dd48fabb8684e6e63cd420cc2aa097e7f8db872f3854ad007b. 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/MYNS12042110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fcf06311b0369f73120692769e659feff19198476aabefb54193193d1f3bd1. 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/MYNS12041749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d7aa9744b85c3a60a254fea8f1ac1602c06645e1ec761a10828588a288fc99. 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/MYNS12042111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d2883025ccefe5c7ee67564b03eff59aa9e18029f241bd99a4ae905db3f08. 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/MYNS12042112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012f89a23a41b7cd7e4f42074f4ae5295a8708ffb76434a5b109b7c03459baa9. 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/MYNS12042113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0102338edde9622d5f47ae9596af279c7c565867e1bd161dd39d56e924c7acd7. 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/MYNS12042114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9923e2891edfb9de902e827b04e2dcbb8b0f0c1bf5e1f004efd83efce022ffb. 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/MYNS12042115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c9d8314b033d8635b725b3e6add64ff3b1b8ebc8550b6bd787420751b7070f. 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/MYNS12042117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676099175ed603357d1f48c938d9089949ac366d118382ef36c6019d87e533c4. 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/MYNS12042118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108e72ad143678717b89438d1ee86f8cc0734c15d628be50adf5247b87b5863. 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/MYNS12042119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fae18841b0274996c249dc3d8c71236747e9349b1ebfed9c3ec02134d54243. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/MYNS12042120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2c7c1c76267b5c7b75f6f0f8d095a31cf21d369e45afb6f45563d4586a36e6. 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/MYNS12042121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5522fac526aea8d61d3ec45a5799dae5afc0a983882e84feee2d8d90f56dca1a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/MYNS12042122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a457fb27300b00326ca812420f36af48a07cb8115f5280a09916b7ddbb92f0b. 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/MYNS12041751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce5c2a0ba3f45c9fd85aab615ebb04d42faa0957aa10ba69add33aa122537f. 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/MYNS12042123.