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 0x32b5efbac01fc168f3c6770fc079b1a9515be68020cc59b500ec50563289739f. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a3ae11b-0491-4699-83f9-ba762c5b45c2.json and https://artists.proofprofile.net/proofs/artist/3a3ae11b-0491-4699-83f9-ba762c5b45c2.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 0xc328a82f0fd1d0b19270ab403a534a90a91e99069ecb47af94e00950a7166ba1. 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/TCJPG1850206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c793f9ef47fa0a6c132a05d852027817014f50d5f283fc01f01697f10f04901. 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/TCJPG1850213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d542d3b169ccff25ba7325f6071f8bda43f6b714b70be5cbea2b729072a86a. 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/TCJPG1850216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0301e62d83f2956c721f98f2a3b9c248b735adbb2706440beec2ddb12601de6f. 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/TCJPG1850218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf679098ddfa49ddbf50377b6a5d24fc792d657a71fbe87da442766a58cb16fc8. 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/TCJPG1850219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111238d4b332638b6888f6314d7c2f3225edbf2f36cfd54458d675829e9bfb4b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCJPG1850212.
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 0x9e260cb0b980414117cdeea7cffebf524cd762cf44d99fa5e8fa9c3089831da4. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCJPG1850214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3fe5e8cad3f8d734df90e43562bca86f7d7b6748ce26dae62070e10fc61a1e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCJPG1850215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536ca6e3ae5ddec3b2185ebfa3cf35f1cb0443e63334d0047cb5d5d662fd69a5. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/TCJPG1850217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5062d11d729c291f7d0d4425725dacb9e41d8402efe7b9b04aa4cbacf101c05. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/TCJPG1850220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fa0f056b71a0c91cf6f1bc24ad55df9641cfac6f1f499a6227c3911a77970f. 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/TCJPF1720817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14030312165974cc0828a92f0db443a9f5188e82958c4343c069aafd8506386. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCJPF1720824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bc7af0a178720a01bdf754b7d69c643f5dd85e4e027ace616b9f594874392a. 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/TCJPF1720828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5088c3fada400a67fc10cde8ba062507e9db902d3a6d94684b96cd574883c5. 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/TCJPF1720834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59995f2e1f62f8073bc5e7f0a975d31dea9fef52f4fdd7af962086607fd1d83e. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/TCJPF1720837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87530356710681184cd001bed9f3aef77460e3e5e649889233fa495b28ea1137. 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/TCJPF1720849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66438bcef13ce800bb43a367683610e24ac5c017a0cd23b2842edfc9abaaf920. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCJPF1720841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5b139d0d383b235912d3e55d3df2f6a3585941775c008818024fc737dfaab5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCJPF1720844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4dfe6326b59c1b0de9de570ed5b87b42fe8d009c3e62db3ec307a0033c7379. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCJPF1720846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff448146c923c4a7af1391ecf2c67b316fae1cb89f7fe875cab7f6aa98485b57. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/TCJPF1720853.
Champion of the World Summer Vacation Championships
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d1e1fc94dd625f9a2e6ff338cedcf68222a370b3150691f5d418f2b9c92196. 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/TCJPB2413583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2738d6ab6f359b81bffa452b64d82433bc101fedf9d441a55bc421f024d294. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:59:52Z), 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/TCJPB2413612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e80cbda608a584ea99bac9ff986015cb61ccb924b9c2a3ba5f0e891501718f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:58:25Z), 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/TCJPB2413619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42eeab9b3afb2dc71c19d1c92d6eca984dacd3b1cff2aa51d1157d2f787e89. 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/JPPC02111140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba019ab4c4a0411a05c7d51d21ee715701dfb6880f68c06cb8954e24d483c6ff. 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/JPPC01613092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc806c9a44bb43172607e571479d0666e83fa01b6f2b0abdeeb8e2637b932c13c. 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/JPPC01613095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f81177dc1e94e38a258d4e6d22832c6338debd882b6ec229845664ddde8f39. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPPC01613091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e71afc47208fd68463ae995d1619a132c14863b40330664c42b1d3d78de4243. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/JPPC01613093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389c559f3e9c24b167a848fe8e72a0f437a11c259e5bcd9e0496b4d29e97c75e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPPC01613096.