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 0x45bf6e6a01ead4bfb8aab1438505864ed99e8fd2fc59c821cb90562f13fd6794. 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/8bef01aa-7286-438b-8e40-6c6b388e8006.json and https://artists.proofprofile.net/proofs/artist/8bef01aa-7286-438b-8e40-6c6b388e8006.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 0x5591ca039e48475f9b3f5be43d180942aa8c56f1f2b0b26e25a47c6179021581. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6541884537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0339b8f216f955cd2de7c7abba0db4a3f3a112fbe103db02903b18f26a889e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR10S1929875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44be5cf8ea879d9d9060008692e7c294c87a0506b3107ebf3e002ef7a6fee1f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRZ051900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63186a50d055ce4efe0ee499a50b25ac88743cb2a298644bd4d570b15d299678. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRZ051900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a9980408e89d2f2ef7c136d86ac6bc16eac6c3da7dd34e9cd518f36d9e3361. 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/FRZ051900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc1d95cc28f5671e765baba858725e57846a718ecf6a599bae2632a5ca51347. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRZ051900309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd853bdbc3641095239c322a5ad23ead90c56410b75e7e8444e6f710f44364b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRZ051900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d3dfbfd80e70cf738ccbccc8d025cdb26893db71777d556396bd1b40ce244. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:10Z), 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/FRZ051900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72f2e0f35ee07c01fd93d45bc40a1303de058f6e396294b984768fd94dfa897. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRZ051900312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a8101c128ca72df7b4d243a6e980a389b1ebf2c54b009caae3387a886a3ecf. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FRZ051900317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44be5cf8ea879d9d9060008692e7c294c87a0506b3107ebf3e002ef7a6fee1f. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/FRZ051900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7ab7177adb1b11932fee65726fde5a61b23d46d75efb617d0bb7f79b9cabd1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRZ052000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b8bf8c0a6fe701f2070a712537668f601a81324c595bd1b6785530f614e880. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRZ052000654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfc0c1088fbd6880ab07ea132eda2e6ee0fbe6fed6d388dceafa139e7f9097b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRZ052000655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d31d1bc7a1b82600f64a88820c7c91f908f29ac952a6b0bd5192868947e853a. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FRZ052000656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde692a105149a78e342ff0855e30c295fa4133ec06242f65e8006bdf388cce4f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRZ052000658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cedbbf293f1994e7e1b11f66935fe5b6b2c53b8ac107b9d1344fad04bc0974b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRZ052100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889b61fa12555f92b3c6cbfba32f0f53a6c046c2e2701b194ef0b9ec8d9ca41. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRZ052000662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2804764fbf49ce1e0e22a3197303b7447231f879a6475003b68c7b2a55fe9f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FRZ052000664.
J'm'en BLC (Extrait du projet Art de Rue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f608f6c464ef33f9154cbef3a0a8e57d6c4bc407213d8218346e4d16e0e4cd2. 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/FRX762399554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa41545a9cf5abc77c537fffbc33a94857f8fc241794bff72e08ecca76ae2aa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR59R2453443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dee78511d6d53465a31681ce2e99c61fa2935c6f4c4e19b4ce64bf122e01e6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R2498065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd8749206ba91e954365f3ce1e972106669849f2b4beeccf151550b364a5e8b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R2498067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa41545a9cf5abc77c537fffbc33a94857f8fc241794bff72e08ecca76ae2aa. 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/FR59R2453443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc447eac058d8f5d2900549f7074861b0a448b71ed77f710065ac5d73640a1c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:20Z), 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/FR59R2498068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2889db46a3e73cac16cf418969029827234fc026d62154d7178d8259b958caa. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR59R2498069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbea550f9bf557e5c697ecd4bd7215465cb654aea3090fd7999535be6c5b325c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:00:59Z), 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/FR59R2498072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e16a6012162a4f5683ff3daaa18882661f700af8c4de38f156ebd8d37873a6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR59R2498073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2cff4ed7442fe6503028ceb514f7f6be5201b4297b4fb5f24d01b12cb632c2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762125238.