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 0x936b34184290da6ef9c069fb8c64e760e06ccf44a73f1db4dc82a51df3724199. Chain 2 (Bitcoin): anchored in block 953794 (2026-06-15T13:43:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0ad7dd4-a6d2-4265-a678-d3ed46a5cbcd.json and https://artists.proofprofile.net/proofs/artist/e0ad7dd4-a6d2-4265-a678-d3ed46a5cbcd.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 0xf741bd1964e3364448f271854ffbcc1db48d532baa58d255a505617f77a523e7. 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/MYNS11940482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd778fbdeef5224dd48fabb8684e6e63cd420cc2aa097e7f8db872f3854ad007b. 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/MYNS12042110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fcf06311b0369f73120692769e659feff19198476aabefb54193193d1f3bd1. 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/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 956349 (2026-07-02T11:34:59Z), 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/MYNS12042112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012f89a23a41b7cd7e4f42074f4ae5295a8708ffb76434a5b109b7c03459baa9. 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/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 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/MYNS12042115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c9d8314b033d8635b725b3e6add64ff3b1b8ebc8550b6bd787420751b7070f. 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/MYNS12042117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676099175ed603357d1f48c938d9089949ac366d118382ef36c6019d87e533c4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MYNS12042118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2c7c1c76267b5c7b75f6f0f8d095a31cf21d369e45afb6f45563d4586a36e6. 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/MYNS12042121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a457fb27300b00326ca812420f36af48a07cb8115f5280a09916b7ddbb92f0b. 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/MYNS12041751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce5c2a0ba3f45c9fd85aab615ebb04d42faa0957aa10ba69add33aa122537f. 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/MYNS12042123.
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.
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 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 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 0xf11eeb3057bfd512085e8ea1ce60b00111d10d41011abab1d7bd6b26887d80eb. 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/MYNS12345415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c927e1175323a82c4fb258b70683667c3c3c7b97ec694a92f91f16f7cd6251. 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/MYNS12345416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e5f4b73833fd31ffa79af9f0b5bc87467f7e4ca1710af6ddf8b6243a93f59. 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/MYNS12345285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f936b751e47e0245665e67e3aad7bc6b0753b5d5dc50dbaaa1d3e0991abd926. 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/MYNS12345289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06f6f131b955a05d52cefa3f600a267727604bc797d36c3435acbcd8b7d7bf7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/MYNS12345283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a701beaa45d221b2d50b43a4544dbe23a93746ab9edc74bc86bfadf4290aa5b. 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/MYNS12345288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2924938b1b45ed3b81114c7b79225be376d032eda1a5cf1127335b5c522760. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/MYNS12345293.