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 0x716525efbf54fd314478c0c459aecee2eed9684d2b61d734baf4b60e69c8db65. 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/81fa9560-066d-4918-bfe3-8933717c044c.json and https://artists.proofprofile.net/proofs/artist/81fa9560-066d-4918-bfe3-8933717c044c.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 0xdf2f9d6768df084ee78e5a0be7db72a617fd1a60126475e1cad75c110422682d. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/GBADD0716501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d76b83af6285905631267b535b38f9d74c8a443545c5941fedfc688ff23a28. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:06Z), 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/GBADD0716507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2245da6571c426c1f879492faa119e2f9398ed744e9c508bde08aa4c7e18ef. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBADD0716508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1620dd81b0f2717921f4c65997112fd3ba9d5a7dbd9498f28307e480dc0fd123. 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/GBADD0716509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b667276c088532b05d8e1587a6bc68a51db84cdc7d7f2e9767da72ce3bc0725. 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/QZNWR2340523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bddcd6fa89424dbe5e87d6c41f2c92b920a0ee048037dcd586dcd7f00052562. 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/QZNWR2340527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e43ff15b8d2860ab1290c496e7d4019c046735ebd68cf7e8944342b022600e4. 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/QZNWR2340531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c198c76e039aad311a5d7c62ce3ed74d771f546bfdd09c737296c75dd348eff. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:45Z), 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/QZNWQ2367331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c100fd4eeae7bbc290c40067e8413f5ac6677b828bc21870eddd26f545770e5. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:44Z), 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/QZNWQ2367334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580ab3b175c8f01527577f56d056660de59cef4ce7c2e3e196337ff9d19cba5a. 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/QZNWQ2367335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aa9b8715e90cd0d0f478f0fa525daa7a5cee94b72f30f354ccef3be663ad61. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:55Z), 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/QZNWQ2398232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343a8adf59480922e5a81fb8d59b4f6b3626537af79a8ae76ee202d4418e0682. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWQ2398233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb321665457d7e0a9d8430a6cca9ce90e06703bf53fc676a30472c42166fa25a1. 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/TCADM1868891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534560bbbf2c3318e1435073569ed12695c3a0f4b982fe24dcaf1f9f863d93f3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:21Z), 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/QZNW72364068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ed6bf7aef276b0f79c20fc56195de17e51bed326f08d9516b4954dd75f948. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZNW72399620.
The Rains of Castamere (A Requiem for Wolves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1e69391d0e097c58be333ac9491e03ba1217620c2ee51fb8b79b0ea2c195b9. 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/QZNW72399625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6a258fb484afaa98f65d0823acd18666ed51468f8a1b89490963d0da6aec18. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM7282454729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624285d5b93f67bbde3a5e32992ced978fff236a3b3dcaf55b999b2c809bd952. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:08Z), 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/QM7282454730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c72fb27e9745067912ecf4a0db07231f37735a01fcb60c77ac59e86da997136. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM7282454731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7236bc0e3b60321d40b049d21d43df61b74eb9f971e1fecbfad5b4684c9b5a0. 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/QM7282454732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3abf7305212aaf8102ce12131666064d55a4f185f947f69c1cd09e5a04f8388. 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/QM7282454733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0351506011b97f263172293f486d4bdb05319fabf414c483abf6e7296b042a6. 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/QM7282454734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340451df9564017d4569c75bad263b4883d7762609937c60225e80a88e080539. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:29:31Z), 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/QM7282454735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcc756a43f342d26ef72b03581dc0d0f098572ee4e895a3d0e06ca411e60914. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:56:11Z), 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/QM7282454736.