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 0x7c8ec33ba9a751a54597df0c41be52781aad72f6c8eb457bf619b44e8d1b55bb. 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/fc1219ea-9216-4341-84c3-7bcba24cd186.json and https://artists.proofprofile.net/proofs/artist/fc1219ea-9216-4341-84c3-7bcba24cd186.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 0x5dacd6622e0e21bab142ba7cde36b7a18f0cd10d57e63dbaa0ed55e91a6d60e1. 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/USP9K0800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836951ebc5e6f89d987a505bda7e0d8589c06031f01ffe3772211222a1d459c8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USP9K0800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae683d4a061888ed9706c47e029614d4e3932bb8c0d37f7fea3265c44138f091. 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/USP9K0800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde649d0d0a6df4363e861f4fdbdc40580cd5ebebffb72884c83c5be5ff8b395e. 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/USP9K0800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4183011f32a86961672664e8cd9f02f6dee9224486b23358c78c32394c3e52. 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/USP9K0800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3275c68e8753d9de6a0efdf6dbeb2a405053b45bc652f0748b288c551970f3cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USP9K0800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc915d98ef0de1d1008773d5d32a72fece794af76bdefb0d6a5e193e4013867. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USP9K0800179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd122c1d37844d38cdbe0335ef962c9af3bca5fc722f07c3398e389b5af03cf. 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/USP9K0800679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689dc81569fc4e97e8fb7ecb1c0e32f7ce82511db5b06a32a29fa33fa79ae0eb. 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/USP9K0800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76765ecb63c4a03db3e02900c1ffd9e70fde86e1e5ab17e8b19d769bc71b342. 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/USP9K0800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21632aac5379d46cef69221b3ccceccb16ca62954c3754c36f9709b8f4f4bb76. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP9K0800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edfdc8bfb7c6153e9cf74a507da30bb8d2b6632a3b338d737d4e5bde624d674. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:04:33Z), 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/USP9K0800180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3060f464dd92d87432572e01ced631f6154a71ac85819bb234f4e40f41319a60. 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/USUM70504600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22dc89abe18e644e8fa499cc08f7fcd9a9f127aa324facfda40d67cf723ed55. 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/USUM70504601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed5b1eb9ecc743ccfedd43d1917545ee6be1c22c0f6c75d1b3ee967f4a016d1. 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/USUM70504602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc884d6ebae297c3804391e37e8a752dfa232fbbc056e25a75fa3a0274218ab63. 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/USUM70504603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c415937546c890d5e805cb7c97bfed85cd5efcd08ef3a750f7b00c66c320dd. 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/USUM70504604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4643bedd27bb35f9d7dfbfde6d7183a0ef8678efd7afe71decb609453c9db0. 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/USUM70504605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10b83cbde94c444535942cbe5b6ddf4e9665d5216ef164116871e4fa2a5a897. 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/USUM70504608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c5926289d929120c6497d9a11ea88eecafa1256d97d96088ab1819b627126a. 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/USUM70504609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec649c647f738f8a2ce617aaadcb0c4c38b976920cbdab9332937b140be90ae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPEW2508475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9518761903567ab9e969bf749b7cc99121f7ae928da9392b3c42c7127e62a2e5. 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/QZPEW2508476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e1fe4641bd8cb648b5886cdda8cd5042fb45d75aae69392c60c526b0518d17. 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/QZPJJ2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ff0425fac5544b3ae851dbbbac44949638eec5ff81fab705b85ea395e26bc. 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/QZPJJ2100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c36e34d744a5c910a30c3bf9fdd8417d076a056aad72bc58af4928e9f784b17. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPJJ2100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf930353de4966c45df3f52b11a5dffd80057881428f85ec678854e3ad8d5167. 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/QZPJJ2100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab67f37f55fd7d937a8f209a12f2c91bbd163d11b66742a1af66116bce6963f1. 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/QZPJJ2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f42529e74697d43d25c07f1a28f7c6528ae7a025159792cc42791024a87d8a2. 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/QZ5AB2069005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc8d16c685a40d72c6a6abcc11b4886e3b11c957a86efd6ace46889ebe163a0. 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/QZ5AB2068975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836951ebc5e6f89d987a505bda7e0d8589c06031f01ffe3772211222a1d459c8. 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/USP9K0800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4183011f32a86961672664e8cd9f02f6dee9224486b23358c78c32394c3e52. 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/USP9K0800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76765ecb63c4a03db3e02900c1ffd9e70fde86e1e5ab17e8b19d769bc71b342. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USP9K0800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689dc81569fc4e97e8fb7ecb1c0e32f7ce82511db5b06a32a29fa33fa79ae0eb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP9K0800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3060f464dd92d87432572e01ced631f6154a71ac85819bb234f4e40f41319a60. 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/USUM70504600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d9a8a4fe9aef20cca321da32f8ba8efe1a96c1e9c05340e590a4faa7041f0c. 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/QZPJJ2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3a480a2adde9fe3e62b12ce44a1ab494fae87646c0abd3861a7c486a9ed69a. 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/USUM70504599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde649d0d0a6df4363e861f4fdbdc40580cd5ebebffb72884c83c5be5ff8b395e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USP9K0800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3a480a2adde9fe3e62b12ce44a1ab494fae87646c0abd3861a7c486a9ed69a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUM70504599.