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 0x857cbe8cff06c951348777856ddd83b44fccc3bba573de364d91320712389a4e. 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/b7f85515-b417-46c0-b5ea-f6ae83093795.json and https://artists.proofprofile.net/proofs/artist/b7f85515-b417-46c0-b5ea-f6ae83093795.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 0xd24eadd81a4de3e791bfddc9a01fc76bfffe614ccfa6cd87ea9fe02e36f6b3aa. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/IL5849002779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4617d4629ce88f51cc212e059c400ff47d09d2095c6caa54b48dab8532095a. 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/IL5849002782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acecb4f97025f24a8629a73b8f0dadf54f686036d525657eb6840880e46359f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/IL5849200968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7bde1ebc678651ebe6589db6ed54a01cb5d4e0b03e0f88f3d3447b0a6e8f89. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:00Z), 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/IL5849200971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c0eaf370efd08f63dbbed5f06ccaca00936533980ecd7119816ecc7299c03. 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/IL5849200969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3343fc0641bf78c9ec5bc1f20d4f11ec623f4b60abff3314e0acdc0ac7f5e981. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IL5849302867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5739b7708438902b515e4090dcb6766a98d5397dcff9553cf62803a9c4f8b359. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:14:19Z), 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/IL5849700981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc35393b79bbb56efaa7ab4f0e0c46b15da0154a351925858a46a8cb6e33b03. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IL1011124713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba95d19a219b319efe4e5ead741648fe7ebcb1dc604ec55df9e994c1af6bdf2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:02:36Z), 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/IL5840400952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5eb89e5a7d3e12f44cb44648d43e729fb18203683a5265fba28a60f081ad4f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/IL5840400962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2698c37c4a57b5991e01342ce69fbede26fb037362df3f0bcca43a72b7fe22. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IL5840400963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ea73a2d36c3361286d7080aebf594a875c688894afff121c08c9312191edb5. 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/IL5840400950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f95445dc32ea9b7c87ce9fa1d83cacd0b08ea36303a7c558bc91059a8d17603. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/IL1011122307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad666c8e57a33b321d7e1a90123183e10ce181c030fe483ddf49c31c4409a22a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:04Z), 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/IL1011122310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8309cdf88344c6b4ce90b47daa3aeb3fc7209322f70d55bc5848a6ed5220e2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/IL1011122497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18825952052ecc044e0879c7370d6d4b463e3d97f79433b70593c6bf447438db. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:30Z), 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/IL1011122496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feb9d2e51d53742591ed5a5a5c35182cfda5e831361d556ad47e23194c347a5. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/IL1011122492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4a8c9232712228ae54c2d4a7a2236a5c7ae9813098e7c961d910a3bc64232b. 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/IL1011122494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3217128c6a49a81ca58b9570e81d0b29ea689835835e0fe854b2fbb193e3e23b. 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/IL1011122269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed028a88c7368022decb6d85c7138947e0ecc8812af1aa36e8dca85d0e6640b. 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/IL1011122275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951f57b2a2c0cf9d712d64fa26f2fc82e683f5ffc64ed38a88cfa82d5b66cb96. 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/IL1011122289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3411fc6f5e5c8c1b7c9dd8aab6faedb2547818756d6983b124aa97094a87ec. 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/IL1011122304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d369c52fab036f4b63b147f1ba09cdfbadc1e646136dc8243ca2986d24ce847. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/IL1011122296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baf54518caec6e1bd34958068922016d83ae1d491b222104411427010e7cca1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL1011122299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8900f60c7358dad93a0ac1f0d3ecd71da5d4ab345832b3ea3f893a06170d9f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/IL1011122255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058f997f6a8ad891ca404f7aab396b441790560dd6d45b18ec55c879fb7620bf. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:39Z), 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/IL1011122261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75fa140bfe13c7cafeded67e20a7e46dbeb1f74921645bb05a33cf959a23910. 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/IL1011124308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c67ffd78234607a9e4ecfc5093f17934bbc979dac280b748827f1473fbbbf11. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:05:57Z), 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/IL1011124389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec821c20f72b2aabadb9b4826204c97a316ac906383940211e6626e1e0c36209. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/IL1011125247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd426bbdf77fc3f0c7999e532db79c63acf22c9f8e815f8dc66c5ef7f86052077. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IL1011127148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87afc8ea89b7418abac2c3a53fa1b5e5a89d21ff618375716de830671738407. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL1012100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c6f54ce698168f2f07430a1168c00bea2e16300dd398b78738e6fd5d9b88de. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:51:32Z), 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/IL5842446866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2179d6f5683c8f1c14f9c577a29cc68da9e5f5fdd5a67d3e6354049f5adf31. 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/IL1042005507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee281dd052a9644b83b6685f0837b42aaa8289d0d332bb21b09b9cff2071d99c. 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/IL5841617315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560587219e8f4e9782bbc6eabb4860c1b67e532730742fa8bdad4c3ec949ca60. 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/IL1011122491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81477d75c063a820bc07cd4ecef82e2d08d7d67043be874b569a61d7a0ddbfa. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/IL5821501365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b088d90fa46a8bc4b703744e5a237d231a58d53a790151e3349b05d087a286. 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/IL5842341770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbd3c12fb9cd07408adc0084f8276b7ff825ad283b3140283e29d780640585f. 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/IL1012300482.