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 0xeaf2b34df139aff1de4a58ebdf6e0949f1f4faef2f07f0005a1cf6d456093448. 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/cf8b46e2-9578-4a22-9308-f12d770a19a5.json and https://artists.proofprofile.net/proofs/artist/cf8b46e2-9578-4a22-9308-f12d770a19a5.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 0xc5014ea768addc5a44bb13f1ab6891cf06b5c33ca2147355bc45ca42196a0568. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2351232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcb1635faa08da847f36667fc8451f2c5a61592b9bf5de0d6c60f35c179b5d0. 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/CA5KR2351689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad46b503ed5094cfc5cf4fe6e1873ee80d253d3d21704ab8bc8c429bfc402b2. 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/CA5KR2351690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ae6f240d0e58d34598e3b909a1b2e0591cb32e6dff48d90b54956226938766. 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/CA5KR2351691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff93912f6a4512715351e91b64384dadaca27169d987df09841e997e68ff243. 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/CA5KR2351692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce02084e5e45d67ae275399148eb8aba10ce56163ce221b827022c9bcb5a7a90. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2351693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5014ea768addc5a44bb13f1ab6891cf06b5c33ca2147355bc45ca42196a0568. 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/CA5KR2351232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79590de38a3832a8ec8198303f30744be8961424e9f364cca7069354f812de76. 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/BKTRP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79de8172e675c11e9ba0ef3065fda550ae000ae0dee6fce87056d06ded917d4. 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/BXS382300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35055c31ae198827684b42ca20d7b3c05fa6be4ae461a0d4eb168ef9c27713aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXQQ32300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282c2b00aca3a2483b5ee5e77811ba22a4095b86ca3358cab6bff0292be59f3a. 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/BXS382300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473284f681030b1125a766be3d5c54b10f2a3814dbbbe3f2cefd44f165af63d4. 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/BXQQ32200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c37b228d1e828f0b3ea9c8000f809242585deeda4130ebebb56d181ced8eaa. 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/BXS382100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8ed6bb01fb91b91a5599f7365fb6023260723299a33a99caba9d1e7c96e96c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRP0J2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7e6e76f83131bc7bad35fa21a5cf8c32a5b7456f8a38349e37065e2364057. 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/BXS382100001.
Stay In Bed (And Do Nothing) [Tropkillaz Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9adaee077f979483b59369ad3b59fe988aff34ec269808eb706d355d656785b. 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/USUM72100681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb2106d1c1ac85b4afeae632e18a94ee4185af3bbe6cb5630ee19b5222ececb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRP0J2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de19a539f4003b0b07af4dbceeec7c5a4ec4d5766575864e1273f04f5200911. 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/BXS382000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59e1a8216cde3a1cdb516507b9d01ce57e2cc205faeaa9ed8d9ee6ba369f99a. 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/BXBIY2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee3705ab4fcf0f33e83a1941491ed22460669d7653e9d88184ee3c7c403442f. 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/BXS381900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdcd99a7e4fb0ec0686f27f20c1fea1abef78dca672a86c0208f266fab8ed1b. 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/BXS381900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6049cbb3b79270e76084c46e55de2eaaf285278c9b122970071c41d6cc6bfc46. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXS381900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e0b5618c508a299df42e6110c452defbc39ad988524e633121b9d9d1b1be0. 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/BXS381900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f99a0f6168c3e3c5b628bbf554203e5ea81554b60a6a04df4da78a7a7e53566. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXS381900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe152323799261c4c4d54aec0df3928ae5d0e3954fb539e90b27240fddbf2da2a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBIY1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4112ef68737c300d218b96d33a3993aedde232701f77634056189f3de84d2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXS381900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af3e92c80dc797c90200a05081cf34e8e3a6beb134bf62370b37e02011fc049. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S1846710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a58566e16357fcefb83de2b85b31ed254e2a6207fb2e5a5982a47a28ac183. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXS381800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f638950e05d3bd1d1186032eef1a58a78f8edd5fe4369e3281e07b74deccea. 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/BRX6F2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c30a1fc8a50331b76bc73a7761db60148be3b2590b2e4a205ba4edeacd8f2d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA302300349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60c00b246c24940c972d46adb124dbb97a098d83e68ca3d53491e2643185bea. 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/KRA302300242.
5 More Days 'Til Summer (Tropkillaz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d1d5c8b9a710fb1eea4405207750284ad02be25cf743102d8fa6803cefddcd. 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/BXQQ32300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b7ebc03fd4f3f84aba096d0acc779a4576f8c5430ebc59e077fe962223d93. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRP0J2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1c32783830e830c438062a32d6d528d5a5f2736e77b06503fbdb2d86267e0e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFI2158483.
Moleques São Meninos, Crianças São Também
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aee46075b3b6083a150f5826976520b5c92f5e67bb1c730ff9ce84e96f96623. 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/BRP0J2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c9cf6d0e07fb9fe0a892697f756823cd3f171746ef34034a2b35058f02bf21. 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/BRP0J2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa09d05774c29bef027abbc990a9870ad696f4f8a365716fa9e57e0c052ebef0. 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/BRP0J2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d836211994e8d9725bc844923b1a65107729e9d8620f74a576b49e2e96068de. 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/USUM71811065.