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 0x60f33fe3b8b6f01b833d3a852246927a69864ec2a92e238b67afd0c224e85290. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f2e1b40-6f03-4ef7-8b3f-f6b06a4d17e2.json and https://artists.proofprofile.net/proofs/artist/2f2e1b40-6f03-4ef7-8b3f-f6b06a4d17e2.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 0x1829b1d66ced0ee10bcb88a1566601a392c979022918d76397a773ca7d71c688. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:16Z), 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/QZHZ32086549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c65a8ebb6b40a60db7639f43d15ff377098c75b33130ccaa317d7ef50f01339. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZHZ32086547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b4a88d2b6bd6f969c4e454f10b623bd73bb1be46a65ed5f65c4c6fc269558d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZHZ32086548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1829b1d66ced0ee10bcb88a1566601a392c979022918d76397a773ca7d71c688. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZHZ32086549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f2bc6e571f291b46b83eb47a22120708cb70ef309f97beb0a497cb2875eff6. 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/US7VG2577931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f215f568f4c692339361edbc5038a0fed97f65f741e0bd30e5e8b4166e0a846. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZGLM2509762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad79741aafadabb83855c092ba15ec3ef0e4067f7719baa43aa65c7f85e4cae. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/US7VG2585171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874649af5056814e9c80e9c981fdbfe62b7d4b094d810b2dcea55ef41cdb2982. 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/US7VG2197916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea698d9c36288cb91527c9a443ea8275e67a5ad9bf4de40abb22e9172609faa. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/US7VG2197690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4c17832bde84c721e4d008c38086f01721aa5e0c9c0356edd6d99d5bca6cb6. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZGLM2128790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2560e183078456df56fe529ade7b827a5998a0eb7587abc0a60c3c47e2b57560. 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/US7VG2585082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd400447c7492b49d503e662b276e124a67e27412e0e5d963a755fbc99bff9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/US7VG2585067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd077ac686f29bf48f12bbb4d5e1bff8b475b1d3387ceec49a98db50e9afd74. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZGLM2509769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd077ac686f29bf48f12bbb4d5e1bff8b475b1d3387ceec49a98db50e9afd74. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:52Z), 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/QZGLM2509769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe62a020af081f97e4f607f0acd1a0cedd0476a558a1846bbc18300c83b4d9d1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/US7VG2584988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe808aea9f85749d0220fe7f6d1fc289329d51b2c2d0223efda701fa386500b5d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/US7VG2584986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e35a8e724ffe09df827b57b16840e86280f7d835bfe72318e5d8abad3e035b. 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/QZHZ62219871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2897cbf3e8dbd1eb00e894b0a483d5cb1a93adbcfcade84aaa53fca8913daa7d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHZ62219539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58af7fe7bf521cd49d41b989255f85bfaa7352222490678c5f756e99b26c0b30. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTVM2219245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33e3981e435a43934c321a8f67b471684bf3c9152197835fb4b38273109cbac. 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/QZW9K2278194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbf2167446189ac17ff4cb5093a409a92dbe714706857304b35c2c0cf34f689. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZMZ92366380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fb6f6f54fb6f0e566a6a735957003cc45267c8860da680d4ece67212d23506. 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/QZNJV2313557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0fe93719db9064142fb6d7b6ae9356f46cbacf980144e5a4b5454db94d2ff. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJZ2376169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104159f18a2b8f701475d379727be0f2276e16500eb38661445277bc14fdc06d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZW9K2398342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b664da45c4ebc2dc100f6368003f822dd1167c0ddf34a761198af381818d43. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZW9L2338184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59c9203d0db2ba64ff0b97db367b543b3e97443297a8ca4d0104e7af0d4c10. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US7VG2456447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8d4fbcf43e7117ba68649dc6541be6c48e781a98ef08de62e9b0d0d225e628. 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/QZGLM2509756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db6b43a16b9e490aab2be4015476e4365f63477583b6c36ef0c208d319cd2f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US7VG2578021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c894d571c5daee8e639c6eab49d8fe430fb7488aa2c07322f6e481fed0a38f. 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/US7VG2580599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9dbcec40e5d76dea12cdac61e3b6688b70323a34190fc9925919e025844579. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:12Z), 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/US7VG2580149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9dbcec40e5d76dea12cdac61e3b6688b70323a34190fc9925919e025844579. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/US7VG2580149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d23e3d9d862d8fd68eb3c3438f96f69f3eaddedfa7916bc2e060f7fac2954d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:08:28Z), 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/QZGLM2581870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b415b19ab1a7b7637b7eb0ca437396bbd8663fe18c2ab90756f4df13f4f14e. 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/QZGLS2524515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebd0f1e6faec5b5e7879386fba30a4f840325e16e6211594251d474eef09d55. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZGLS2530553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab201914b0d75ff05feab28de837d5b24042225c5b0d63a5d8c2bcd45d92e40. 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/QZNJX2528228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9441e677ab4284ae93cf7a261b3b586a98284a7ab9018a30de54d7cfa357f2. 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/QZNJV2311743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcf6cd00c776ceafd18d65b4482eb603ce034f0056963ce9be89f37b9b09333. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZW9L2212431.