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 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 0x99dea87d52b15737f379529e6b6af95a024f2fcac9facc8245506cd4d88b05c5. 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/dab7d778-f423-48f2-b4d2-595e8832e490.json and https://artists.proofprofile.net/proofs/artist/dab7d778-f423-48f2-b4d2-595e8832e490.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 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 0xf8c816905e6245482dd7c96fe2cd0c063f68ca7af638fb84b7762b2e13632aab. 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/FR2X42297457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36dffb4be7b12b3ac9754e0e380123a6fefc37523c22c817a02ebc5328a022f. 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/DGA052275674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091249a149a8279ed979929be3a790d7285806e4c2f88095e80b944dd1937524. 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/FR59R2495105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cece276292c6e9ff8f2c07542fb703ce3323194cdd50c3db0774832519b570. 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/DGA0L2414827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630eba2bcc426acf8cf1dc8ccbc0ab8bab62a5b08bf27985864db7a980b00888. 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/DGA0P2455475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36dffb4be7b12b3ac9754e0e380123a6fefc37523c22c817a02ebc5328a022f. 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/DGA052275674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cece276292c6e9ff8f2c07542fb703ce3323194cdd50c3db0774832519b570. 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/DGA0L2414827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6437fe0725ae5d9bbc9fc2d43f3f42a6a3c3ae22a66aa5c336ea943d4baf8da. 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/DGA0P2455476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1006e9c4ccdaef119f628ad8419e545dbd86f77c90757283f95eff2b1c878609. 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/DGA0P2455477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eebeb66f70949a47e7592ab9b9cc9120f3c8cda1f4393b5ee63343d99338af. 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/DGA0P2455478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96132433beaaf46e8e9ce3b983d4edc7c469dd831a0945c3a17509ebd76bbf69. 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/DGA0P2455479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed59147ae06e917af0a2bad621727452880ce8802e3f99221939ba73ef4421d. 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/DGA072202912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d0694e8754ff44de91485081ec6e05412c68550bcd132d0b77a47fce80b783. 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/DGA0P2455480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809df72e4733f2944fddb1cd474bd7f88aeb865125d8b98d54d5e2776fec3e09. 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/DGA0P2455481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091249a149a8279ed979929be3a790d7285806e4c2f88095e80b944dd1937524. 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/FR59R2495105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be250ff9b84696bffdc98a23f978bca6e65e7ba0e84a8709e28e2cf12fc3e92. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX452547554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5c0d179a4f57e5ffa7702f21d62b7985352f9e8db40779d8b437ca53a9e8a9. 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/DGA052522196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d51de49de42d6f75172794e3ade02568fbd1be8aec068bbd7c6b40bd24f2bd4. 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/DGA052522197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71c98af631a2224dce11f456b744ad7f8f47b409547a29ba5f787388bec8f27. 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/TWA532101461.
心REMIX ft.SiNNER MOON & PIZZALI (feat. SiNNER MOON & PIZZALI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d913c48cb1d9ea7ac6a9fed242529f4d77105151a51bc2efdb5caca6f17da4. 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/TWA472211003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af01d17f69c6a8f03a2caca2a795d300d60592c1e239d992d4ba85f4e67ab2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWCT52207853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf9a96e50047f801df579da71cd27a0ea4f8c869c302e76a3afb77352ccf0a2. 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/DGA052465944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2968a663cd11ab40e7746cba5797bf08852dd3430e694edac8bbb8dfed00ab60. 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/TWA532101175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dfa7fdf20521bff40733409979cf5bcd010b178ac6f4c0018f3bc1ea997ed3. 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/TWDJ52200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf810eb05e535616198e66af2616ffd03d72c1b5bde7f29991252e1f00fcd767e. 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/TWDJ52200028.
ORION - 華興 (feat. Kuma, PIZZALI & L4Wudu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3b3ee9173e214603e5d631af1e82cc627e00c9863f6d81c9ddeaf4b275b5fb. 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/USUYG1414671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f02eaea446e2e1829ee438e42e5f497c6bf8813c6579694298a55f8f27c15. 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/TWP012120411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d913c48cb1d9ea7ac6a9fed242529f4d77105151a51bc2efdb5caca6f17da4. 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/TWA472211003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b790d97d6d204465219bbc2d04360e277dd85731bdb13b5d02c31b93fc4d2. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/JPP302300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2348945554ce4242a92b2b890808877b609bc87b5da63118eb7e79e752e73db. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TWCC32204028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af01d17f69c6a8f03a2caca2a795d300d60592c1e239d992d4ba85f4e67ab2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWCT52207853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd407f10b1dfe23e75ec9a059df323a81d0150f88423e397c66e5b1e6919c0cdf. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TWA532101381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329282e8d0f56b810f26de2f4cf72635be74a89aa8dd9a4e5d3660503d3860f0. 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/FRX872270810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36ff8edb41c7443a54e1c77057c3dd278e9732170802e0210878298505e7214. 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/FRX872270812.
終究還是因為愛 (REMIX) [feat. 李浩瑋, PIZZALI, 陳忻玥, G5SH]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57668dd33baf7a02c6a55e3eaa72e5b88ce64b17a56bab41f15af09937c298fd. 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/TWA532200114.
饒舌巨獸 (feat. Green Father 比杰,DJ MR. GIN,林可綸,西屯純愛組,PIZZALI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059276c6175dd731fca919c0a376afb559f257109d6e204dea83bdb8efba6dcd. 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/TWJ012500101.