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 0x283c75a931363d3dc5b46b70f06f2a02db740e0dd90ed7e08872d69800ffde5f. 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/12f6572a-be63-4b50-a5c1-8c39e5633748.json and https://artists.proofprofile.net/proofs/artist/12f6572a-be63-4b50-a5c1-8c39e5633748.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 0x4c0741aee7caecebae11b888fc26073dc726be49d87a3441ec44f5a3265b9a2a. 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/NLYK92000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21349fbe0cbedca8746e0246192ca8c3a87876451abab55b32f4a4f9d3eddd7. 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/USAT22003261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a73036224a0089f1b34713ece46a5d2e8e38b9c131fe10af3c10fae3383bbc. 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/USAT22003258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2b4b9b6c25c1d7bd8325ecde8df2f7e64f762223b2a63b6f2bb23aedff715. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAT22003259.
Who's Laughing Now - Breathe Carolina Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e00d439fc8de5f7243f9b00b312eea98cd23adfe9488e229a720476ce9ccf5. 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/USAT22003260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2924232699b03d31558b8858fc8d4029ca2f441430c13002296d3d8015d309aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf6033ab9eea446bf0d3c765349671a83bf9697d4310098d8069af44113488c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL1DT2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acaf9a04c189edab9873d07d490394c38c2544adfe9fff582f6ba3070f9ae52. 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/NL1DT2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6177ca0cb2b23e81a7b13c6243395e096d0c8a18dbdfb89dca7acff84bc29fee. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/NL1DT2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba84cb347ecb0ea2645938ab046fac4fa8b915e13251552be88625f210e8364. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NL1DT2200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3501076d3d7e4ed805d86f62b9a1ee3f4f3e8d4106dbd9e95bcfd57a2912ff5a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NL1DT2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19119f57c85cb0e2793b8ac7cc63b948e2ef28a3b18644647c0b051c153be190. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL1DT2400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c51463b982b7d28f2708e8476f3cb0f2943a6706b509f181be2dd44c03bf255. 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/NL1DT2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3dc38ea0d68b9469610e7884fe85757bc8d9d4f6e686b7703d7fc56a30d29d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZN882360853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf6033ab9eea446bf0d3c765349671a83bf9697d4310098d8069af44113488c. 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/NL1DT2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f342fa1975a28cfd0c53e1af1fece11c8d9a46c68a0b720c73561c7c8af2cf6. 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/CA5KR2211722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf65784c12455ad8d10c713044102b1da7eaf4445a8c6353c5677a68b9f42b9. 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/CA5KR0002467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dd9248dfc71c5e66c1c29aaa25d4aa6d15a0dd287a44d8a3cf7f0ce5027d44. 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/CH7812196917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a5965dca8f687768f609426034d35e1e4bdc223531f18ff955b76422a2509f. 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/NLYK92100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9238f37c9d399be393442bf009aee86afebf63e192a59c3be4b33d9423691a4a. 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/QM4TX2192379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2e3e54cfe7c1da049b336901b8120d3e3cb9dea412f027a0213e9edf1ed4fd. 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/NLYK92100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cabc5f1c8463fd0a1721d588d7eda13b2e04bb78c463064335b92fbdd302193. 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/NLYK92100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c899cf0c85ed445f41d1982b523daa5179a30d011d3012af9f56e5c2d87502. 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/NL1DT2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb858f9fe9b6fc1024a7a592442be2be069d193db445fe836bef5e45d718190b7. 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/NLYK92100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fe3647a616c9e0977d57288f19491ef9604a784227417d1c1b8a9b7bb25ebf. 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/QM42K2103586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9751fb82ceb50b0ac67b5febe102cf398691d281d4b113706e97ede740616027. 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/DEN062100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f00a5a1b2d346ef1d52de56e96db10b10c6f373477ba5f11af9db474bd07bf. 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/NLYK92000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a77f8e4ff84172195ae03e537b0628209729504262b9ff7f5af6dc6e2989e4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLYK92000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d75fb50aea2c8da5214c6fac71dcae77f2f1e36dc1e46adb9387060e15758f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862002599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033085155211d0ed2d83aacc8fccb748b94ed321c89663d8e9010039ab9cc952. 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/NLYK92000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e59546a145833213d710c83484b1b048674e1de1f1582a7b1cc1dfea924c9f7. 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/NLYK92000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cec571b821f960922cfa0a261a8530a836a3d53c0d635027160c81e281abe5. 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/NLYK92000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9822e1d3779ae0e20c70be622ce2938aaf500206c4a230476257c9baf68e36c. 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/NLYK92000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaf051af4148b3bc82e21868d20edb7fefb44884b58ecb860cd98a0cfe9c7e1. 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/NLZ542000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f858293382adfcf754ce8cf93bb85cfbdcd564412fbb2f4e3c1889fd2b5e296. 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/NL1DT2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77ec4abb6a5d0c4b80da4d35ac5b3895257e534d29ee571a44ec5a2dc17b872. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLYK92000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd103c5f9aff1e78be3c33d53c00b9c1f691654fccfa0c3321dbd52b64c157. 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/GBKQU2008521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbff3dc45225e1b1c4995292e2bb21e2cd3bd4cb2b76392776b4231005bfeff0. 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/NLYK92000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271b4168de0ee0bae8ce2967eae7c3cfb79e7c46311e09a7d8c81550435ebb0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD1700250.