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 0xa645bf993b3337b890a986c5a5f90b07197fdcccabc2f932519862ed46c47122. 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/65aca884-2794-4e25-a66d-c549ab2bfed8.json and https://artists.proofprofile.net/proofs/artist/65aca884-2794-4e25-a66d-c549ab2bfed8.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 0xe1d220dcd90cfdd1b250aeaf6f5d42f6a5c00e6fe0f9f23407289fe698effed8. 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/TCJPJ1903329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8320698f5d9adb5c71ef36223365098ef586d2f7af151fb0e5c34861b953b5c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TCJPJ1903340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b2a2f01a97e420be112869d10cb55da8bdd4366545d9150b0918f4519669b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCJPJ1903349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457b288ac0d96b54e97671aa3c84739ac3bf8990a20b45f639eba90fbdf1f42d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPJ1903361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ea3306219968b61bca4bb3020e9fa6bdf616a1f58db14d4ad7b2cbea2ae79f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/TCJPJ1903362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b2a2f01a97e420be112869d10cb55da8bdd4366545d9150b0918f4519669b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/TCJPJ1903349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596c3a08d891a8108e314bd02d43ab2413201b19408f649b2256f34c4a0d9c07. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPJ1903353.
Tyrant’s Miniature Garden - Remixed by Tujiko Noriko
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811524165b7b34da3ee86c440e4698045f16062a5d7ecb78ef7b6867f7e38626. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPB640900095.
light in august, later (Anesthetic) - Remixed by aus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdcfad9d94e5e34f74bc8d10a6cae3d7ddc60b119fbf87c9448b462b68ee0c6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPB640900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15db9b6693fd94f64b0640588208e9b48db15c88511a9aaba6e513bc2a6a5f. 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/JPZ921213923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6955c13a00a7054449a2ba46575ccb6e9f006090d31059b16f46f7189d01cb78. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/JPZ921213925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86337501e70e5a07adce96648f5974085ccbaabcc9cee1e9e244ee858b27d208. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPZ921213926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0db57531dce2ef7dab767f726b3b58d373c00530d9e2b16265d9359f8dfbd6. 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/JPZ921213927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72eb2230d0e50ef3779e3b649f759cc95ad81ddbb7771f083f0b1f4b67e7eba. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPZ921213928.
Oblivion moshimoss Remix - moshimoss's cold basin mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbc1f479afb972f1709971f1b6e739f358b8142430ba88c2e0336ac47591851. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/TCJPE1619193.
Cut All Trees world's end girlfriend Remix - memories of the tree rings mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f5f068e5d2c96e4b563f6767767643529fd14480868f667068896d70804af3. 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/TCJPE1619194.
Sacred Play Secret Place Candlegravity Remix - Dandelion Dub Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334b9048d31b5109ce94d0766abcf81925d242ad92ee6c727031971470668a48. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPE1619196.
Gentle Afternoon matryoshka Remix - Urban Collapse Or Everlasting Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e9f1d67a90de300b86eda488414c252ce2284183799d2fb775109167bb296c. 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/TCJPE1619203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbc1f479afb972f1709971f1b6e739f358b8142430ba88c2e0336ac47591851. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCJPE1619193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f5f068e5d2c96e4b563f6767767643529fd14480868f667068896d70804af3. 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/TCJPE1619194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7400cfea056e1ae547a3d470348ee6828e9c19cd10cecb253da0b96384402d3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCJPE1619195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334b9048d31b5109ce94d0766abcf81925d242ad92ee6c727031971470668a48. 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/TCJPE1619196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185669a662e1f62df81c8da88967986531870ec96981cdb3e033dbbceac054b4. 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/TCJPE1619197.
Butterflysoup (Like Stars Were Flickering Out) Go-qualia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf642a5166f1d1f979dcad69a827bc90c50dd5916946761680982012545a6ab5c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCJPE1619198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fcc112532b9bb60e735e1cf069baafa5effbe212b1236a09f9b8011a830e34. 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/TCJPE1619199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe8c90b26f540d5baa1d53e4a5366bc6395c153c2c6ea3360a73dfe12565d60. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/TCJPE1619201.
Monotonous Purgatory - Aoki Yutaka Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064233887318b80282841abcee7365ee319d8fd17581cd46bedee97faf795b8d. 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/TCJPE1619202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e9f1d67a90de300b86eda488414c252ce2284183799d2fb775109167bb296c. 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/TCJPE1619203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78989dca5b15e4eddaa2b2aa40b516828d435d862fa097c6a2013eea7fad518d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPD2543933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78989dca5b15e4eddaa2b2aa40b516828d435d862fa097c6a2013eea7fad518d. 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/TCJPD2543933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec5395437e0190ef775a8931ffa7c90c04bc74892a8f6f3dd1707b7a14274b1. 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/TCJPM2040951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d5dfca1fcfa917a611fd969eeb14179fcba4c4496d24bb04202ce8c906e7e8. 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/JPZ921507686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89882e4f90cc690a80d5d3c96edb88c34427f5b339394f15c5654b3f2052d938. 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/TCJPG1741150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fc2c995f60d9019e18dbcee846afbbfe25889cba50dfcc066c073d18711970. 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/QM6N21517935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb30e05d81a888dd1015402123fa87ffc4aab388ce1da7074bdb3e558b8c6a8. 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/QM6N21517950.
-echo-: NieR Kaine / Salvation - Kaine / Escape [matryoshka]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2db0c30e9bb3128cf0ec526a0e38578240ee872fcdf2676838b5a5fd6e52cb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/JPA841100326.