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 0x95ed3d6c4748e121d92773c1d1a60f39beaa35ae7a6b80f65747a55ff8ed513e. 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/d0702ef6-81a6-4b12-ab72-bbbb2f975c21.json and https://artists.proofprofile.net/proofs/artist/d0702ef6-81a6-4b12-ab72-bbbb2f975c21.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 0xf97cd9b5e83acb67ea3c1df374514f5287f223f2803aebc4196386b8959b1a51. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BEW541800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774d992861ac54230d0963c1e42b9d580a9549909fb20015ca10487fc1918aaa. 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/BEW541800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a1ce666c0089232263f5300913698e7e557137435e3588448062b12ba8d792. 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/BEW541800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9560d512b8c435f82d71a3c3746595f839f67d5a7fdaa18802ed6adec88741c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BEQ152000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf403d6d79f3b67f34a8d4041d7388efb0b065b299621e0a77b6eb33be291e7f4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BEQ152000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798b7208cd156614751c3357c9d6c06747b8076f90dd937a520aaadbac2d7393. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BEQ152000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734bf31accba429751151b2783634951abe491cedb726c947fe2c7808d430514. 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/BEQ152000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7604d7270fa26736a68d9c138a3c8d078055f9a2bee9f357157e63f8be691fb1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BEQ152000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c465b3f7c0a8b4d765846ed460c908d257770fd0e9f9028329d8bd206ddaab. 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/BEQ152000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97be8325a3a7cd5c2cebdf88700e4b2ce26d4ac5e010bc32fd8b3691eb0fccbc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BEQ152000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e9e86c918b3f2729e16ba28e3b526fc8acfbe67a0858328b14ab917e41e3e8. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BEQ152000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3810450f10aff152d18058e365a61bcb8144f9eae244f1f3add95322ea3c28bc. 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/BEQ152000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6191c50a0d52710488c3ea96f7b267091102c00c53980a3f9a960229d55158. 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/BEQ152000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6230881b7b7ca10157f8d48d52774963554f480aa6d60723e3313e4e2be37b8. 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/BEN582300414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada13d7414e02e223a901554809208b0f76bc1e014b28c8d6881d3b8b501a919. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/BEQ152301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed905f335c98ad5d6139e7f945c31b068cfea5909c9a02ed96cc10ad5802c8b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/BEQ152301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50ec969dafc03045ae62ff9264dd7e3a7ab214b6c9fa0d8e7a3e8c648cf744b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BEQ152301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608fa05c231b81ec560281429b6f504457c1f60e78f96b0e2b5a2501c2b84f5b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:11:49Z), 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/BEQ152301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7868d009c19f8e07af4234405143d6300a02da271c2708f865b8f9cc92d391ea. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BEQ152301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe232722c10ddfca5caeac8027c6953fed3c99dbdcc28a3f9255fdb026b7170a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BEQ152301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c8932bf0bc335363708fae36c4113f67508d9d1d4b58aea226d4560a9ee729. 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/BEQ152301012.