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 0xbf2ed158dcc33604b6904c02cf8fb0d77983d7de7330cc3efa9a483818452e9a. 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/2a69e326-d34c-4f10-b824-42c4f5dfff9a.json and https://artists.proofprofile.net/proofs/artist/2a69e326-d34c-4f10-b824-42c4f5dfff9a.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 0xf63131dcfd302d952ffd369c928f110a71234073984c1a7acd9d92010d488e91. 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/BX4E52264321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14376b3739f76ad75a131ae06a3aa406dc63bcd70966bac3e5d84663119e4c4. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BX4E52264322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b33c708a541d0dda7448c199579113d5ecf9fb1f173ccc40d78b4647130a3b9. 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/BX4E52264323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191b0bdf1c630fbe0ccbb09476241376b4f6005d9453ba6c0dd7dc6ad81b803d. 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/BX4E52264325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e51828b27916c6b059e9d176c660bf7947ef79ef6d292929156a2ffe581e6f3. 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/BX4E52264327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fb5aa684c614413179d751f8488b3842b423f4a899e75efe94b9ed5359e98a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/BX4E52264328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeb73e1f0b9fab7063e208431919add5f8b9d6232d04e625341fc6699ca1223. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:00Z), 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/BX4E52264370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e9aed6d5c2ff227b2bce744b604d428429c0f05bdc1a4011f6b4a5d78e6a8d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BX4E52264362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2960c8f9fcd46b3959308166e9bd8d71ffe48a7f3b8579fdf27ea47b9c169. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:08Z), 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/BX4E52264311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d365d216e86344defc46cf42b31655f2d4f8a21e9b087b8f5fa316451dddfb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BX4E52264313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6971e977124879e810ddb3a02403f3ded3b6385c1ba325a9575e1b9f8a2e77e8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX4E52305548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc226e8c5391d729fc7c29f6f7f49982cba622dc2a36c1ad0fdaf097d104f4386. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/BX4E52305535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14469f16f4544652eb6e19c2ea761d0703b6236d365e7040486f7c7919076419. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BX4E52305553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95752ff2b60a68b159c48e93d89b2cff95e5aa4a44a24e46a73c674373bd3e16. 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/BX4E52305555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646268156de67f6c9dd074e060fcc4dac90efd1640e16b32aeb0d56d5ffc2fd0. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:36Z), 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/BX4E52305558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5ae732362ca50d7b3c1ca40be44c3587cfcd3bde16863b17ccb9b63fdd58b5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX4E52305526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572e0c814e8dab681e69ed259eeb21c76112012240b32d9f26f6bcb9011bfde. 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/BX4E52305527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c691cf6cf4fa2c001661f1b5a8d6d2e0ee85933c8e7b1d1b2b6789e980fca00. 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/BX4E52305529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9a2b156d5013ebfc125d36dd713bd10b14ae27bdf3a101374aa2f33b011f2d. 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/BX4E52305530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4b841378fc0d3ae1a3dba3b4110da81e2ac13252a3ab17f674790a17263282. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BX4E52264388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294a02ce61b8f4efa7d35c0238b9d62e3c4fa49d05dda7fe6a4aaf8db772c60d. 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/BX4E52264391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35234d247115f6a4cf815c48ec5d31dfebb788fb21accf45a402b16b79d7d615. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BX4E52264393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935a60e9b1e706ec1331df773fbb5f85c9284bcd70c6e4bb2d6648458bdbbef4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX4E52264394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8f333dc2ae0fa455cc808d60a2425bd32bffb71ef7b69cc96da679ef70c5ce. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BX4E52264411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6cf992a0591d9f758f8a6562c65f60262cf60edae30176500ed7d862fe62d0. 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/BX4E52264412.