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 0x79f29bb78e322a549c3a0fb6c04487546dac8d5775cd4e8af501b5d132ab4985. 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/8d087bae-5c34-4acf-9250-0e3d1e36cd74.json and https://artists.proofprofile.net/proofs/artist/8d087bae-5c34-4acf-9250-0e3d1e36cd74.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 0x4db3559f83bf3740a40617d72bf7c9c45f1916b1e4e42787ccf1375be2d10b5e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/BXTD71900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830ba8e3a210b6e6339323d904ce11ff8bf09aae99021e16dbd90e0ffba0daa5. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BXTD71900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7137b033237b1bfc9d1bbf96b9dea9e268d0f1a2cd8ea0cbbc6bbf21e122f1bd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BXTD71900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3051bfa73b85cdc3401f9b9952bef5eaa929abf6ef848b4c3bff395691eef7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BXTD71900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b70406f8803f6d542f9fde111ab14faa5a6a4c591cb8f7bedb5c93ece1d20d. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/BXTD71900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2740c50ce74fc56647584ceacdb1f54819f9b03dcdc72eef19b66c0f0c892c9. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BX4HR1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0400a5338d2837b0a390a05224c60bb315c2eac4e115785ac9c0d9a03d9587c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/BX4HR1900009.
Quero Ser Feliz Também / Doo Wop (That Thing)
Quero Ser Feliz Também / Doo Wop - That Thing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b43101d17a47d0443bf302778a0d8997ebb0c156bba38f69f96c52a5d551e2a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BX4HR1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382bb97d20acab6950831db89feac09f2d52c3ec2ab7dbb0acd6e623100424e5. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BX4HR2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514091b299063434eaa7517471d17f916d2677d42f4dc40c81f7c0e1ab6d189e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BX4HR2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4977d44eb49d322179196a9184746c8b3e15dfe5337462b3cd02cb0a25edb4c8. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/BX4HR2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81da11ee6f01d5e9dcb124dc7dca36e78afc3030e1bbdd7cd832efd22c9f91ff. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BX4HR2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382bb97d20acab6950831db89feac09f2d52c3ec2ab7dbb0acd6e623100424e5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BX4HR2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514091b299063434eaa7517471d17f916d2677d42f4dc40c81f7c0e1ab6d189e. 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/BX4HR2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c650f6d802abb4e6c02ed71a0ae4655793f2898c2bd95d1bd1fd37d6b53128. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BX4HR2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a6bbe258769a0f32a9ba07aef9660056ebb2dd814b095e8338c0f5efee6b34. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BX4HR2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac24faccb57d5f4cfb127064652b60161fa876720c67cd5b504249ccbac7606. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/BX4HR2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468a4356bf534f692f2b14588411607a4d6f26a5d86efff5ae55a6e284748402. 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/BX4HR2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c8cc096603aeb7ddbf149a8a1776fb4ad994f1f6254f259aa281b5876c01de. 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/BX4HR2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe295ba0ad78d3e7cd5f7ffdf0cd176bd187cae6356f43b84cafb338ebe0d76e7. 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/BX4HR2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf75224abab4f1787675f6f0734a8543f3f32d0f33e928eb363df80159a2f4b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BX4HR2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9151225a7205287e71a3b6d4174035aad27b91b637e4f3176ce4acb18e9f4c4. 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/BX4HR2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5939800f2ed20d768ed415ec0b9a2960400b1405832214a33c40a234a43f95b. 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/BX4HR2300010.