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 0xefa37ebed3219adcc7b0e291ffb5a9bcb628b05323eb31d15c726c2d87e26b93. 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/efe916c7-3856-4bfb-aa87-3f7a63d97a22.json and https://artists.proofprofile.net/proofs/artist/efe916c7-3856-4bfb-aa87-3f7a63d97a22.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 0x1e5497e05a62fa92e6b638d17b45f9f91fd4cc09f6a14c3cbe9afd53228f9489. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZN882202567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755d407d9c5df95bf9d6592d3cb0efbff5bdcc0e46d6d390a38dc44afe60a274. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZN882257478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16d5edef1eaff8e31d01840d0e41074042b63fbebe8baa3563446cfe6e81947. 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/QZN882305379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbb470d2b3bc9d4c8637ef0d42900fc7284ef05a7cb259e5e7872e9840c9171. 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/QZNJY2252894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b3ed25501b759b6e046b3d1296fc2fb7d238203ec7742ea106e6a8101aecce. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZTPX2100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479f6649a1f16ef2b7703d92389f81e207cf212fd8e1b910ed53a0b4b892940c. 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/QZNJY2140030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a58ba8e411409d5c9942597a98475e9861945861c57d408b0a471861276d1e8. 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/QZNJY2139948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5059a2b6ae25e762878335b1384a16f87be78a5b6f99cf0e49e1e2f635ecd13e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZNJY2139883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d336d3b13a8bea11358c602a5cca81e125b09447d5f2c637646d1b9daac0abe. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNJY2132479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81feee82d1f0990cdeec67e345d4a87dac4d5c6f572bbcbdc4bc3b78b790c59f. 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/QZNJW2110175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc194b9cd9ad5f50031d567817ac6e56e3aefc435632a7d1f34e5267d564e5a63. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZHZ42160504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240273f4da137dcbb825d4e6dba988255e7eb3fe585d056e2a13018d1dc17aa5. 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/QZGLM2107694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98371960c4e2be05fac6c94b5d7242c989f80c54fe235a04d369da6a4ed6b9ec. 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/QZ5AB2193382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea3644761354b685a295688df72084bbfc88a8f1664bf0fa35764d6b100d482. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZNJX2068008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b7d65263afa1e619cb7f09dc2c2b6aae30fd86b64512595f22b4527b57e6b6. 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/QZNJV2095200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f4c0780f170d821cdfbef6da47abdcaef22f24aa26898bd8093568ae235ae1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZNJV2052228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f7b32ad99006c8f57e1c5505f59b30a7434285c03c6bd9ee0d8a1b4edf206b. 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/QZMZ92084096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f5b72165c6002a4e26a11017219f716e1cb029c06da969f66220f1476bd03c. 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/QZHZ62038051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca015a14326a4131297d47b94469aad82855e92e83a3f31522f49dd6fbd57586. 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/QZHZ62036301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf18d9f35da3296477f9ebda1daaeab925cfc08e5603bcdf6fd4263c94f6221. 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/QZHZ52098839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d4ce2d159ee1f38159b6c0f298ea6c4835112cca99890955e8a4141d6b79f6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZN882347567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989c7dc9c9c4b17155743416a145e770a5bd9863e5061bd5e473463cbb1adcef. 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/QZWDW2368813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b56a465013d8320d620ce8f24c22be56b2b60bdb1cee3feea79aaec0e04b865. 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/QZZ662320074.
Como Van Hacer Pa Picar La Torta (Afrobow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebd3e7e0f623e53323f14c8f827433ac06c30911c780d08b158b4a606fe65e8. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZZ662474152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbce07c8a1b54da1f38abeb168e4ff0a22a57d0e7632eed2461e0695f61adcb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZYFZ2412029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99d5357511d19d32b02c7bad723993f31b1a2d3935786f02bf7b30951b0784d. 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/QZYFZ2459798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13c54c00b2b44b33c88a62fc22652b46b0a39edb05b69fdc953ceefbd0d0863. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/AUGBT2421493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52758759c52f41b7a66a199c6608cdf2f3fa8bbe23545a56377fb909fbca365. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AUGBT2423655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7699dabf0d15309df1c2d84063bbb0c3cd2f20260e2b718c848bfc21de8c18af. 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/AUGBT2484108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcae661e51d1b6177484d691a19fbdee8db726cddd1e2c4625536bf3f1f6aff. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/AUMEV2510131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b473c6157bb1593f77549a32abff20c24f449e65ec6783a80d2759b94f17c6. 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/AUMEV2516659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6429784115e640489b12564975820f4fe984a3bdc93ff2ba5c5c8d14a38cca. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AUMEV2535290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29d9c34531106c00801441ade35458665dfc67c615003c8299a72db103b56c0. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/AUMEV2547162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd16aa0e67a83c12e7ddfad7883673e9620d727991a353a3cb789f4bf791e0d. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/AUMEV2572899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb4eef2b848a3fffde81e6b6c28a7aa5e0c53855d303073b013b04168aa4549. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/AUMEV2591779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5180a65921dbe47729e8602a67b23e66dd51d79c764751d77df7894f4cb1b3. 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/AUGBT2501135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08969be5643410a2a4922cd0cce739306462d04108a4d578c045c31b74ee6ee. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/AUGBT2561514.